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Dolby Laboratories Licensing Corporation patents


Recent patent applications related to Dolby Laboratories Licensing Corporation. Dolby Laboratories Licensing Corporation is listed as an Agent/Assignee. Note: Dolby Laboratories Licensing Corporation may have other listings under different names/spellings. We're not affiliated with Dolby Laboratories Licensing Corporation, we're just tracking patents.

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Private communications in virtual meetings

Apparatus comprising an interface for receiving a respective uplink data stream from each of three or more further apparatuses, and for transmitting a respective downlink data stream to each of the further apparatuses; and a logic system in communication with the interface. The logic system is configured: to receive first... Dolby Laboratories Licensing Corporation

Nearby talker obscuring, duplicate dialogue amelioration and automatic muting of acoustically proximate participants

In an audio conferencing environment, including multiple users participating by means of a series of associated audio input devices for the provision of audio input, and a series of audio output devices for the output of audio output streams to the multiple users, with the audio input and output devices... Dolby Laboratories Licensing Corporation

Tiling in video encoding and decoding

Implementations are provided that relate, for example, to view tiling in video encoding and decoding. A particular method includes accessing a video picture that includes multiple pictures combined into a single picture (826), accessing information indicating how the multiple pictures in the accessed video picture are combined (806, 808, 822),... Dolby Laboratories Licensing Corporation

Method and generating from a coefficientdomain representation of hoa signals a mixed spatial/coefficient domain representation of said hoa signals

There are two representations for Higher Order Ambisonics denoted HOA: spatial domain and coefficient domain. The invention generates from a coefficient domain representation a mixed spatial/coefficient domain representation, wherein the number of said HOA signals can be variable. A vector of coefficient domain signals is separated into a vector of... Dolby Laboratories Licensing Corporation

Projection displays

A locally dimmed display has a spatial light modulator illuminated by a light source. The spatial light modulator is illuminated with a low resolution version of a desired image. The illumination may comprise a series of lighting elements that vary smoothly from one element to another at the spatial light... Dolby Laboratories Licensing Corporation

Blind bandwidth extension using k-means and a support vector machine

A system and method of blind bandwidth extension. The system selects a prediction model from a number of stored prediction models that were generated using an unsupervised clustering method (e.g., a k-means method) and a supervised regression process (e.g., a support vector machine), and extends the bandwidth of an input... Dolby Laboratories Licensing Corporation

State-based endpoint conference interaction

Systems and methods are described for modifying one of far-end signal playback and capture of local audio on an audio device. Frames of both a far-end audio stream and a near-end audio stream may be analyzed using a measure of voice activity, the analyzing producing voice data associated with each... Dolby Laboratories Licensing Corporation

Content-adaptive perceptual quantizer for high dynamic range images

A content-adaptive quantizer processor receives an input image with an input bit depth. A noise-mask generation process is applied to the input image to generate a noise mask image which characterizes each pixel in the input image in terms of its perceptual relevance in masking quantization noise. A noise mask... Dolby Laboratories Licensing Corporation

Techniques for dual modulation with light conversion

Techniques for driving a dual modulation display include generating backlight drive signals to drive individually-controllable illumination sources. The illumination sources emit first light onto a light conversion layer. The light conversion layer converts the first light, such as blue or ultraviolet light, into second light, such as white light. The... Dolby Laboratories Licensing Corporation

Voice activity detector for audio signals

According to one aspect, a method for detecting voice activity is disclosed, the method including receiving a frame of an input audio signal, the input audio signal having an sample rate; dividing the frame into a plurality of subbands based on the sample rate, the plurality of subbands including at... Dolby Laboratories Licensing Corporation

System and leveling loudness variation in an audio signal

Systems and methods for leveling loudness variation in an audio signal are described. Embodiments use both a perceptual leveling algorithm and a standards-based loudness measure together to minimize audio process artifacts and ensure that the measured loudness of the processed audio is close to a required measure, according to a... Dolby Laboratories Licensing Corporation

Reverberation generation for headphone virtualization

The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal... Dolby Laboratories Licensing Corporation

High contrast discrete input prism for image projectors

Prism assemblies for projector display systems disclosed receive inputs from discrete color channels (e.g., red, green and blue channels. In one embodiment, “off state” light from the red, green, and blue DLP modulation may be reflected away from on-state light paths within the prism, tending to avoid uncontrolled scatter. In... Dolby Laboratories Licensing Corporation

Transformation of dynamic metadata to support alternate tone rendering

An existing metadata set that is specific to a color volume transformation model is transformed to a metadata set that is specific to a distinctly different color volume transformation model. For example, source content metadata for a first color volume transformation model is received. This source metadata determines a specific... Dolby Laboratories Licensing Corporation

Conference searching and playback of search results

Various disclosed implementations involve processing and/or playback of a recording of a conference involving a plurality of conference participants. Some implementations disclosed herein involve receiving audio data corresponding to a recording of at least one conference involving a plurality of conference participants. The audio data may include conference participant speech... Dolby Laboratories Licensing Corporation

Speedup techniques for rate distortion optimized quantization

Techniques for selecting a coding mode for an image coding process are described. Coding modes can be selected through a coding mode transition state machine, a re-quantization process, selection of an optimal transform size, by skipping some quantization parameters, or by performing motion search.... Dolby Laboratories Licensing Corporation

Optimized virtual scene layout for spatial meeting playback

Various disclosed implementations involve processing and/or playback of a recording of a conference involving a plurality of conference participants. Some implementations involve receiving or determining conversational dynamics data. One or more variables of a cost function may be based, at least in part, on the conversational dynamics data. The cost... Dolby Laboratories Licensing Corporation

System and adaptive audio signal generation, coding and rendering

Embodiments are described for an adaptive audio system that processes audio data comprising a number of independent monophonic audio streams. One or more of the streams has associated with it metadata that specifies whether the stream is a channel-based or object-based stream. Channel-based streams have rendering information encoded by means... Dolby Laboratories Licensing Corporation

Transitioning between video priority and graphics priority

A processor receives input video data of a video dynamic range and input dynamic metadata. It also receives: input graphics data of a graphics dynamic range and input static metadata, display identification data from a target display over a video interface, and a blending priority map characterizing a per-pixel priority... Dolby Laboratories Licensing Corporation

Enhancement of spatial audio signals by modulated decorrelation

Some methods involve receiving an input audio signal that includes N input audio channels, the input audio signal representing a first soundfield format having a first soundfield format resolution, N being an integer ≧2. A first decorrelation process may be applied to two or more of the input audio channels... Dolby Laboratories Licensing Corporation

Assessment and adjustment of audio installation

Example embodiments disclosed herein relate to assessment and adjustment for an audio environment. A computer-implemented method is provided. The method includes obtaining a first audio signal captured by a device located in an environment. The method also includes analyzing a characteristic of the first audio signal to determine an acoustic... Dolby Laboratories Licensing Corporation

Video compression and transmission techniques

Embodiments feature families of rate allocation and rate control methods that utilize advanced processing of past and future frame/field picture statistics and are designed to operate with one or more coding passes. At least two method families include: a family of methods for a rate allocation with picture look-ahead; and... Dolby Laboratories Licensing Corporation

Signal reshaping approximation

Statistical values are computed based on received source images. An adaptive reshaping function is selected for one or more source images based on the one or more statistical values. A portion of source video content is adaptively reshaped, based on the selected adaptive reshaping function to generate a portion of... Dolby Laboratories Licensing Corporation

Predictive image encoding and decoding with pixel group based quantization

The present invention relates generally to images. More particularly, an embodiment of the present invention relates to the pixel group segmented quantization and de-quantization of the residual signal in layered coding of high dynamic range images. By assigning the pixels in the residual image to different pixel groups based on... Dolby Laboratories Licensing Corporation

Audio processing apparatus with channel remapper and object renderer

Embodiments are described for rendering spatial audio content through a system that is configured to reflect audio off of one or more surfaces of a listening environment. The system includes an array of audio drivers distributed around a room, wherein at least one driver of the array of drivers is... Dolby Laboratories Licensing Corporation

High dynamic range displays using filterless lcd(s) for increasing contrast and resolution

A display provides increased contrast and resolution via first LCD panel energized to generate an image and a second LCD panel configured to increase contrast of the image. The second panel is an LCD panel without color filters and is configured to increase contrast by decreasing black levels of dark... Dolby Laboratories Licensing Corporation

Digitally controlled ac protection and attenuation circuit

A protection and attenuation circuit for sensitive AC loads is described. The circuit provides AC power protection and attenuation utilizing high-efficiency switch-mode techniques to attenuate an AC power signal by incorporating a bidirectional, transistorized switch driven from a pulse width modulation signal, PWM. The circuit monitors characteristics of the AC... Dolby Laboratories Licensing Corporation

Transmission-agnostic presentation-based program loudness

This disclosure falls into the field of audio coding, in particular it is related to the field of providing a framework for providing loudness consistency among differing audio output signals. In particular, the disclosure relates to methods, computer program products and apparatus for encoding and decoding of audio data bitstreams... Dolby Laboratories Licensing Corporation

Audio encoder and decoder with dynamic range compression metadata

An audio processing unit (APU) is disclosed. The APU includes a buffer memory configured to store at least one frame of an encoded audio bitstream, where the encoded audio bitstream includes audio data and a metadata container. The metadata container includes a header and one or more metadata payloads after... Dolby Laboratories Licensing Corporation

Methods and devices for improvements relating to voice quality estimation

This disclosure falls into the field of voice communication systems, more specifically it is related to the field of voice quality estimation in a packet based voice communication system. In particular the disclosure provides a method and device for 5 reducing a prediction error of the voice quality estimation by... Dolby Laboratories Licensing Corporation

Display management for high dynamic range video

A display management processor receives an input image with enhanced dynamic range to be displayed on a target display which has a different dynamic range than a reference display. The input image is first transformed into a perceptually-quantized (PQ) color space, preferably the IPT-PQ color space. A color volume mapping... Dolby Laboratories Licensing Corporation

Encoding, decoding, and representing high dynamic range images

Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values. In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an... Dolby Laboratories Licensing Corporation

Adaptive audio construction

Described herein is a method for creating an object-based audio signal from an audio input, the audio input including one or more audio channels that are recorded to collectively define an audio scene. The one or more audio channels are captured from a respective one or more spatially separated microphones... Dolby Laboratories Licensing Corporation

Methods, apparatus and systems for determining reconstructed audio signal

According to an aspect of the present invention, a method for reconstructing an audio signal having a baseband portion and a highband portion is disclosed. The method includes obtaining a decoded baseband audio signal by decoding an encoded audio signal and obtaining a plurality of subband signals by filtering the... Dolby Laboratories Licensing Corporation

Method for decoding a higher order ambisonics (hoa) representation of a sound or soundfield

βe=┌log2(┌log2(√{square root over (KMAX)}·O)┐+1)┐.... Dolby Laboratories Licensing Corporation

01/04/18 / #20180005643

Modeling and reduction of drone propulsion system noise

In some embodiments, a method, apparatus and computer program for reducing noise from an audio signal captured by a drone (e.g., canceling the noise signature of a drone from the audio signal) using a model of noise emitted by the drone's propulsion system set, where the propulsion system set includes... Dolby Laboratories Licensing Corporation

01/04/18 / #20180006011

Pixel tile structures and layouts

An overall displacement tolerance applicable to each pixel tile in a plurality of pixel tiles to be used as parts of an image rendering surface is determined. Each pixel tile in the plurality of pixel tiles comprises a plurality of sub-pixels. Random displacements are generated in each pixel tile in... Dolby Laboratories Licensing Corporation

01/04/18 / #20180006837

Post-conference playback system having higher perceived quality than originally heard in the conference

Some aspects of the present disclosure involve the recording, processing and playback of audio data corresponding to conferences, such as teleconferences. In some teleconference implementations, the audio experience heard when a recording of the conference is played back may be substantially different from the audio experience of an individual conference... Dolby Laboratories Licensing Corporation

01/04/18 / #20180007327

Methods and systems for high dynamic range image projectors

Projection systems and/or methods for efficient use of light by recycling a portion of the light energy for future use are disclosed. In one embodiment, a projection display system is disclosed comprising a light source; an integrating rod that receives light from said light source at a proximal end that... Dolby Laboratories Licensing Corporation

01/04/18 / #20180007356

Reshaping curve optimization in hdr coding

In a system for coding high dynamic range (HDR) images using lower-dynamic range (LDR) images, a reshaping function allows for a more efficient distribution of the codewords in the lower dynamic range images for improved compression. A trim pass of the LDR images by a colorist may satisfy a director's... Dolby Laboratories Licensing Corporation

01/04/18 / #20180007368

Methods and systems for image intra-prediction mode management

Embodiments of the present invention relate to methods and systems for ordering, communicating and applying pixel intra-prediction modes.... Dolby Laboratories Licensing Corporation

01/04/18 / #20180007374

Chroma subsampling and gamut reshaping

Downsampled video content is generated in a subsampling color space from linearized video content in the subsampling color space. The linearized video content represents a first spatial dimension, whereas the downsampled video content represents a second spatial dimension lower than the first spatial dimension. Opponent channel data is derived in... Dolby Laboratories Licensing Corporation

01/04/18 / #20180007484

Method for decoding a higher order ambisonics (hoa) representation of a sound or soundfield

βe=┌log2(┌log2(√{square root over (KMAX)}·O)┐+1)┐.... Dolby Laboratories Licensing Corporation

12/28/17 / #20170371167

Discrete laser fiber inputs for image projectors

Discrete light fiber inputs for high powered image projector display systems are disclosed herein. Various embodiments disclosed herein may employ a bundle of light fiber inputs, a diffuser and reducing relay optic to convert the fiber input array into a smaller pattern of spots that may be interfaced to a... Dolby Laboratories Licensing Corporation

12/28/17 / #20170371168

Improved integration rod assemblies for image projectors

Integrating rod modules are disclosed comprising a plurality of single and/or solid integrating rods that are mated together by straps. Such modules tend to comprise a greater length than the single and/or solid integrating rods and provide good illumination to a modulator that light from a light source is transmitted... Dolby Laboratories Licensing Corporation

12/28/17 / #20170372709

Method and device for decoding an audio soundfield representation

Soundfield signals such as e.g. Ambisonics carry a representation of a desired sound field. The Ambisonics format is based on spherical harmonic decomposition of the soundfield, and Higher Order Ambisonics (HOA) uses spherical harmonics of at least 2nd order. However, commonly used loudspeaker setups are irregular and lead to problems... Dolby Laboratories Licensing Corporation

12/28/17 / #20170372719

Sibilance detection and mitigation

The present disclosure relates to sibilance detection and mitigation in a voice signal. A method of sibilance detection and mitigation is described. In the method, a predetermined spectrum feature is extracted from a voice signal, the predetermined spectrum feature representing a distribution of signal energy over a voice frequency band.... Dolby Laboratories Licensing Corporation

12/28/17 / #20170373656

Loudspeaker-room equalization with perceptual correction of spectral dips

A method for generating a perceptual equalization (EQ) filter applicable to an audio signal to equalize the audio signal, including: generating a full EQ filter for use in performing full equalization on the signal; and modifying the frequency-amplitude spectrum of the full EQ filter in accordance with a dip detection... Dolby Laboratories Licensing Corporation

12/28/17 / #20170373857

Metadata transcoding

The present document relates to transcoding of metadata, and in particular to a method and system for transcoding metadata with reduced computational complexity. A transcoder configured to transcode an inbound bitstream comprising an inbound content frame and an associated inbound metadata frame into an outbound bitstream comprising an outbound content... Dolby Laboratories Licensing Corporation

12/28/17 / #20170374317

Adjusting spatial congruency in a video conferencing system

Example embodiments disclosed herein relate to spatial congruency adjustment. A method for adjusting spatial congruency in a video conference is disclosed. The method in unwarping a visual scene captured by a video endpoint device into at least one rectilinear scene, the video endpoint device being configured to capture the visual... Dolby Laboratories Licensing Corporation

12/28/17 / #20170374382

Interpolation of video compression frames

Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame... Dolby Laboratories Licensing Corporation

12/28/17 / #20170374383

Interpolation of video compression frames

Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame... Dolby Laboratories Licensing Corporation

12/28/17 / #20170374484

Hybrid, priority-based rendering adaptive audio

Embodiments are directed to a method of rendering adaptive audio by receiving input audio comprising channel-based audio, audio objects, and dynamic objects, wherein the dynamic objects are classified as sets of low-priority dynamic objects and high-priority dynamic objects, rendering the channel-based audio, the audio objects, and the low-priority dynamic objects... Dolby Laboratories Licensing Corporation

12/21/17 / #20170364752

Sound and video object tracking

Image data relating to real-world objects or persons is collected from a scene while collecting audio data relating to the real-world objects or persons from the same scene. The audio data is used to derive sound objects corresponding to the real-world objects or persons. The image data is used to... Dolby Laboratories Licensing Corporation

12/21/17 / #20170365268

Reconstructing audio signals with multiple decorrelation techniques and differentially coded parameters

A method performed in an audio decoder for decoding M encoded audio channels representing N audio channels is disclosed. The method includes receiving a bitstream containing the M encoded audio channels and a set of spatial parameters, decoding the M encoded audio channels, and extracting the set of spatial parameters... Dolby Laboratories Licensing Corporation

12/21/17 / #20170365273

Audio source separation

A method of audio source separation from audio content is disclosed. The method includes determining a spatial parameter of an audio source based on a linear combination characteristic of the audio source and an orthogonality characteristic of two or more audio sources to be separated in the audio content. The... Dolby Laboratories Licensing Corporation

12/14/17 / #20170359045

Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal

The invention relates to the measurement and control of the perceived sound loudness and/or the perceived spectral balance of an audio signal. An audio signal is modified in response to calculations performed at least in part in the perceptual (psychoacoustic) loudness domain. The invention is useful, for example, in one... Dolby Laboratories Licensing Corporation

12/07/17 / #20170352330

Optimizing light output profile for dual-modulation display performance

Techniques for optimizing light output profiles in display systems are described. A light output profile is defined in relation to a plurality of sample locations on an illuminated surface. Point spread functions that satisfy illumination performance values specified in the light output profile in aggregate are computed or derived. A... Dolby Laboratories Licensing Corporation

12/07/17 / #20170352355

Methods and encoding and decoding multi-channel hoa audio signals

A method for encoding multi-channel HOA audio signals for noise reduction comprises steps of decorrelating the channels using an inverse adaptive DSHT, the inverse adaptive DSHT comprising a rotation operation and an inverse DSHT, with the rotation operation rotating the spatial sampling grid of the iDSHT, perceptually encoding each of... Dolby Laboratories Licensing Corporation

12/07/17 / #20170353696

Handling nuisance in teleconference system

The disclosure relates to handling nuisance in teleconference system. An endpoint device (400) for use in a teleconference includes an acquiring unit (401), a judging unit (402), a controller (403) and a processing unit (404). The acquiring unit acquires a media stream for presentation in the teleconference, and receives information... Dolby Laboratories Licensing Corporation

12/07/17 / #20170353810

Adaptive panner of audio objects

An audio object including audio content and object metadata is received. The object metadata indicates an object spatial position of the audio object to be rendered by audio speakers in a playback environment. Based on the object spatial position and source spatial positions of the audio speakers, initial gain values... Dolby Laboratories Licensing Corporation

11/30/17 / #20170344852

Projection-based audio object extraction from audio content

A method is disclosed for audio object extraction from an audio content which includes identifying a first set of projection spaces including a first subset for a first channel and a second subset for a second channel of the plurality of channels. The method may further include determining a first... Dolby Laboratories Licensing Corporation

11/30/17 / #20170346460

Adjusting dynamic range of an audio signal based on one or more dynamic equalization and/or dynamic range control parameters

The invention relates to the measurement and control of the perceived sound loudness and/or the perceived spectral balance of an audio signal. An audio signal is modified in response to calculations performed at least in part in the perceptual (psychoacoustic) loudness domain. The invention is useful, for example, in one... Dolby Laboratories Licensing Corporation

11/30/17 / #20170347125

Directed interpolation and data post-processing

An encoding device evaluates a plurality of processing and/or post-processing algorithms and/or methods to be applied to a video stream, and signals a selected method, algorithm, class or category of methods/algorithms either in an encoded bitstream or as side information related to the encoded bitstream. A decoding device or post-processor... Dolby Laboratories Licensing Corporation

11/30/17 / #20170347215

Measurement, verification and correction of time alignment of multiple audio channels and associated metadata

Some methods may involve receiving a block of audio data, the block including N pulse code modulated (PCM) audio channels, including audio samples for each of the N channels, receiving metadata associated with the block of audio data and receiving a first set of values corresponding to reference audio samples.... Dolby Laboratories Licensing Corporation

Patent Packs
11/23/17 / #20170336645

3d projection system using laser light sources

Laser or narrow band light sources (e.g., red, green, and blue) are utilized to form left (e.g., R1, G1, B1) and right (e.g., R2, G2, B2) images of a 3D projection. Off-axis viewing of the projections which has the potential to cause crosstalk and/or loss of energy/brightness in any channel... Dolby Laboratories Licensing Corporation

11/23/17 / #20170337934

Vector noise cancellation

Techniques are provided for vector noise cancellation. Different value combinations for a plurality of weighting factors may be established for a plurality of selection regions. Each value combination for the plurality of weighting factors may correspond to a different combination of a set of input signals. One or more characteristics... Dolby Laboratories Licensing Corporation

11/23/17 / #20170338784

Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal

The invention relates to the measurement and control of the perceived sound loudness and/or the perceived spectral balance of an audio signal. An audio signal is modified in response to calculations performed at least in part in the perceptual (psychoacoustic) loudness domain. The invention is useful, for example, in one... Dolby Laboratories Licensing Corporation

11/23/17 / #20170338785

Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal

The invention relates to the measurement and control of the perceived sound loudness and/or the perceived spectral balance of an audio signal. An audio signal is modified in response to calculations performed at least in part in the perceptual (psychoacoustic) loudness domain. The invention is useful, for example, in one... Dolby Laboratories Licensing Corporation

11/23/17 / #20170338786

Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal

The invention relates to the measurement and control of the perceived sound loudness and/or the perceived spectral balance of an audio signal. An audio signal is modified in response to calculations performed at least in part in the perceptual (psychoacoustic) loudness domain. The invention is useful, for example, in one... Dolby Laboratories Licensing Corporation

11/23/17 / #20170338833

Method and device for arithmetic encoding or arithmetic decoding

... Dolby Laboratories Licensing Corporation

11/23/17 / #20170339406

Adaptive filtering based upon boundary strength

An image decoding apparatus that includes a motion compensation prediction circuit configured to conduct motion compensation prediction for each of blocks to be decoded by using the reconstructed image, an inverse transformation circuit configured to conduct inverse orthogonal transformation for the data of the blocks to be decoded, and a... Dolby Laboratories Licensing Corporation

11/23/17 / #20170339407

Adaptive filtering based upon boundary strength

An image decoding apparatus that includes a motion compensation prediction circuit configured to conduct motion compensation prediction for each of blocks to be decoded by using the reconstructed image, an inverse transformation circuit configured to conduct inverse orthogonal transformation for the data of the blocks to be decoded, and a... Dolby Laboratories Licensing Corporation

11/23/17 / #20170339429

Encoding and decoding architectures for format compatible 3d video delivery

Encoding and decoding architectures for 3D video delivery are described, such as 2D compatible 3D video delivery and frame compatible 3D video delivery. The architectures include pre-processing stages to pre-process the output of a base layer video encoder and/or decoder and input the pre-processed output into an enhancement layer video... Dolby Laboratories Licensing Corporation

11/23/17 / #20170339504

Impedance matching filters and equalization for headphone surround rendering

Embodiments are described for designing a filter in a magnitude domain performing an impedance filtering function over a frequency domain to compensate for directional cues for the left and right ears of the listener as a function of virtual source angles during headphone virtual sound reproduction. The filter is derived... Dolby Laboratories Licensing Corporation

11/23/17 / #20170339506

Metadata-preserved audio object clustering

Example embodiments disclosed herein relate to audio object clustering. A method for metadata-preserved audio object clustering is disclosed. The method comprises classifying a plurality of audio objects into a number of categories based on information to be preserved in metadata associated with the plurality of audio objects. The method further... Dolby Laboratories Licensing Corporation

11/09/17 / #20170324931

Adjusting spatial congruency in a video conferencing system

Example embodiments disclosed herein relate to spatial congruency adjustment. A method for adjusting spatial congruency in a video conference is disclosed. The method includes detecting spatial congruency between a visual scene captured by a video endpoint device and an auditory scene captured by an audio endpoint device that is positioned... Dolby Laboratories Licensing Corporation

11/02/17 / #20170316758

High dynamic range display using led backlighting, stacked optical films, and lcd drive signals based on a low resolution light field simulation

An HDR display is a combination of technologies including, for example, a dual modulation architecture incorporating algorithms for artifact reduction, selection of individual components, and a design process for the display and/or pipeline for preserving the visual dynamic range from capture to display of an image or images. In one... Dolby Laboratories Licensing Corporation

11/02/17 / #20170318406

Methods and compressing and decompressing a higher order ambisonics representation

Higher Order Ambisonics represents three-dimensional sound independent of a specific loudspeaker set-up. However, transmission of an HOA representation results in a very high bit rate. Therefore compression with a fixed number of channels is used, in which directional and ambient signal components are processed differently. The ambient HOA component is... Dolby Laboratories Licensing Corporation

10/26/17 / #20170308996

Single-pass and multi-pass-based polynomial approximations for reshaping functions

A processor for approximating a reshaping function using a multi-segment polynomial receives an input reshaping function. Given a number of target segments (N) and an initial maximum fitting error, in a first pass, it applies a first smoothing filter to the input reshaping function to generate a first smoothed reshaping... Dolby Laboratories Licensing Corporation

Patent Packs
10/26/17 / #20170309286

System for maintaining reversible dynamic range control information associated with parametric audio coders

In particular embodiments, the reconstruction further includes use of compensated post-processing DRC parameters quantifying a potential decoder-side dynamic range compression. Cancellation of an encoder-side range limitation and range compression are preferably performed by different decoder-side components. Cancellation and compression may be coordinated by a DRC pre-processor.... Dolby Laboratories Licensing Corporation

10/26/17 / #20170311081

Enhancing the reproduction of multiple audio channels

This invention relates to the field of multichannel audio. More particularly, the invention relates to a method for the provision of audio channels suitable for application to loudspeakers located above conventional front loudspeakers.... Dolby Laboratories Licensing Corporation

10/26/17 / #20170311107

Loudness adjustment for downmixed audio content

Audio content coded for a reference speaker configuration is downmixed to downmix audio content coded for a specific speaker configuration. One or more gain adjustments are performed on individual portions of the downmix audio content coded for the specific speaker configuration. Loudness measurements are then performed on the individual portions... Dolby Laboratories Licensing Corporation

10/12/17 / #20170293202

High power visible laser with a laser-fabricated non-linear waveguide

Novel methods and systems for waveguide fabrication and design are disclosed. Designs are described for fabricating ridge, buried and hybrid waveguides by a femtosecond pulsed laser. A laser system may combine a diode bar, a wavelength combiner and a waveguide. The waveguide may convert the electromagnetic radiation of an infrared... Dolby Laboratories Licensing Corporation

10/12/17 / #20170295259

Remote management system for cinema exhibition devices

Methods and systems for management of cinema devices are disclosed. The cinema devices can connect to a central node even through a firewall. Once the initial connection is established, updates and commands can be sent and received, both to and from the cinema devices. An operator can connect to the... Dolby Laboratories Licensing Corporation

10/12/17 / #20170295382

Backward-compatible hdr codecs with temporal scalability

A processor for video coding receives a full-frame rate (FFR) HDR video signal and a corresponding FFR SDR video signal. An encoder generates a scalable bitstream that allows decoders to generate half-frame-rate (HFR) SDR, FFR SDR, HFR HDR, or FFR HDR signals. Given odd and even frames of the input... Dolby Laboratories Licensing Corporation

10/12/17 / #20170295391

Enterprise theater management system

Novel methods and systems for providing an enterprise theater management system are disclosed. A remote or cloud-based enterprise theater management system uses a ruleset to uniformly control theater playlist presentation for multiple theaters in either a point of sale controlled or fully autonomous manner, including the sequencing of theater cues... Dolby Laboratories Licensing Corporation

10/05/17 / #20170285732

Queasiness management for virtual reality systems

Input VR imagery is received. Global motions as represented in the input VR imagery relative to a viewer of a virtual reality (VR) application is extracted. A dampening factor is applied to the global motions to generate dampened global motions. VR imagery to be rendered to the viewer at a... Dolby Laboratories Licensing Corporation

10/05/17 / #20170289357

Evaluation of perceptual delay impact on conversation in teleconferencing system

Example embodiments disclosed herein relate to an evaluation of perceptual delay impact on a conversation. A method of evaluating perceptual delay impact on a conversation is disclosed. The method includes detecting a conversational event between a first participant and a second participant, the conversational event including a plurality of speech... Dolby Laboratories Licensing Corporation

10/05/17 / #20170289520

Compatible stereoscopic video delivery

Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic... Dolby Laboratories Licensing Corporation

10/05/17 / #20170289546

Quantization control for variable bit depth

The quantization parameter QP is well-known in digital video compression as an indication of picture quality. Digital symbols representing a moving image are quantized with a quantizing step that is a function QSN of the quantization parameter QP, which function QSN has been normalized to the most significant bit of... Dolby Laboratories Licensing Corporation

10/05/17 / #20170289555

Chroma reshaping

A first signal in a first color format is received. The first signal is transformed to a second signal in a second color format to be compressed using an encoder. Before encoding, the chroma components of the second signal are reshaped according to the statistical characteristics of the chroma components... Dolby Laboratories Licensing Corporation

10/05/17 / #20170289682

Dynamic suppression of non-linear distortion

Systems and methods are described for dynamically suppressing non-linear distortion for a device, such as a speakerphone. A device may receive a signal, where the device has non-linear distortion at a predetermined frequency. The received signal may be analyzed to compute a tone strength parameter and a band level. The... Dolby Laboratories Licensing Corporation

10/05/17 / #20170289721

Audio channel spatial translation

M audio input channels, each associated with a spatial direction, are translated to N audio output channels, each associated with a spatial direction, wherein M and N are positive whole integers, M is three or more, and N is three or more, by deriving the N audio output channels from... Dolby Laboratories Licensing Corporation

10/05/17 / #20170289724

Rendering audio objects in a reproduction environment that includes surround and/or height speakers

During a process, decorrelation may be selectively applied to audio data for an audio object based, at least in part, on whether a speaker for which speaker feed signals will be determined is a surround speaker. In some implementations, decorrelation may be selectively applied according to whether such a speaker... Dolby Laboratories Licensing Corporation

10/05/17 / #20170289725

Method and device for rendering an audio soundfield representation

The invention discloses rendering sound field signals, such as Higher-Order Ambisonics (HOA), for arbitrary loudspeaker setups, where the rendering results in highly improved localization properties and is energy preserving. This is obtained by a new type of decode matrix for sound field data, and a new way to obtain the... Dolby Laboratories Licensing Corporation

09/28/17 / #20170280264

Adaptive panner of audio objects

An audio object including audio content and object metadata is received. The object metadata indicates an object spatial position of the audio object to be rendered by audio speakers in a playback environment. Based on the object spatial position and source spatial positions of the audio speakers, initial gain values... Dolby Laboratories Licensing Corporation

09/21/17 / #20170272375

Jitter buffer apparatus and method

Disclosed is a method and apparatus operative to process packets of media received from a network including a receiver unit operative, a jitter buffer data structure and a playback head defining a point in the jitter buffer data structure from which the ordered queue of packets are to be played... Dolby Laboratories Licensing Corporation

09/14/17 / #20170263211

Perceptual luminance nonlinearity-based image data exchange across different display capabilities

A handheld imaging device has a data receiver that is configured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that... Dolby Laboratories Licensing Corporation

09/14/17 / #20170264861

Dual-ended metadata for judder visibility control

Methods and systems for controlling judder are disclosed. Judder can be introduced locally within a picture, to restore a judder feeling which is normally expected in films. Judder metadata can be generated based on the input frames. The judder metadata includes base frame rate, judder control rate and display parameters,... Dolby Laboratories Licensing Corporation

09/14/17 / #20170264898

Multiple color channel multiple regression predictor

Inter-color image prediction is based on multi-channel multiple regression (MMR) models. Image prediction is applied to the efficient coding of images and video signals of high dynamic range. MMR models may include first order parameters, second order parameters, and cross-pixel parameters. MMR models using extension parameters incorporating neighbor pixel relations... Dolby Laboratories Licensing Corporation

09/14/17 / #20170264905

Inter-layer reference picture processing for coding standard scalability

Video data are coded in a coding-standard layered bit stream. Given a base layer (BL) and one or more enhancement layer (EL) signals, the BL signal is coded into a coded BL stream using a BL encoder which is compliant to a first coding standard. In response to the BL... Dolby Laboratories Licensing Corporation








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