Methods and devices for controlling audio parameters
Granted: July 23, 2024
Patent Number:
12045539
A method of controlling headphones having external microphone signal pass-through functionality may involve controlling a display to present a geometric shape on the display and receiving an indication of digit motion from a sensor system associated with the display. The sensor system may include a touch sensor system or a gesture sensor system. The indication may be an indication of a direction of digit motion relative to the display. The method may involve controlling the display to…
Signal reshaping for high dynamic range signals
Granted: July 16, 2024
Patent Number:
12041275
In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated…
Video compression and transmission techniques
Granted: July 16, 2024
Patent Number:
12041234
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 a family of methods for average bit rate (ABR) control methods. At least two other methods for each method family are described. For the first family of methods, some…
Virtual rendering of object based audio over an arbitrary set of loudspeakers
Granted: July 9, 2024
Patent Number:
12035124
An apparatus and method of rendering audio. The method includes deriving filters by defining a binaural error, defining an activation penalty, and minimizing a cost function that is a combination of the binaural error and the activation penalty. In this manner, the listening experience is improved by reducing the signal level output by loudspeakers further from an audio object's desired position.
Directed interpolation and data post-processing
Granted: July 9, 2024
Patent Number:
12034972
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 utilizes the signaled algorithm or selects an algorithm/method based on the signaled method or algorithm. The selection is based, for example, on…
Method for encoding and method for decoding a LUT and corresponding devices
Granted: July 9, 2024
Patent Number:
12034971
A method for encoding a LUT defined as a lattice of vertices is disclosed. At least one value is of each vertex of the lattice. The method comprises for a current vertex: predicting the at least one value of said current vertex from another value which is for example obtained from reconstructed values of neighboring vertices; and encoding in a bitstream at least one residue computed between the at least one value of the current vertex and its prediction in a bitstream.
Methods and systems for designing and applying numerically optimized binaural room impulse responses
Granted: July 2, 2024
Patent Number:
12028701
Methods and systems for designing binaural room impulse responses (BRIRs) for use in headphone virtualizers, and methods and systems for generating a binaural signal in response to a set of channels of a multi-channel audio signal, including by applying a BRIR to each channel of the set, thereby generating filtered signals, and combining the filtered signals to generate the binaural signal, where each BRIR has been designed in accordance with an embodiment of the design method. Other…
Signal reshaping for high dynamic range signals
Granted: July 2, 2024
Patent Number:
12028555
In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated…
Methods and devices for generating or decoding a bitstream comprising immersive audio signals
Granted: June 25, 2024
Patent Number:
12020718
The present document describes a method (500) for generating a bitstream (101), wherein the bitstream (101) comprises a sequence of superframes (400) for a sequence of frames of an immersive audio signal (111). The method (500) comprises, repeatedly for the sequence of superframes (400), inserting (501) coded audio data (206) for one or more frames of one or more downmix channel signals (203) derived from the immersive audio signal (111), into data fields (411, 421, 412, 422) of a…
Dynamics processing across devices with differing playback capabilities
Granted: June 25, 2024
Patent Number:
12022271
Individual loudspeaker dynamics processing configuration data, for each of a plurality of loudspeakers of a listening environment, may be obtained. Listening environment dynamics processing configuration data may be determined, based on the individual loudspeaker dynamics processing configuration data. Dynamics processing may be performed on received audio data based on the listening environment dynamics processing configuration data, to generate processed audio data. The processed audio…
Dock for headphones
Granted: June 25, 2024
Patent Number:
D1032565
Frame-rate scalable video coding
Granted: June 18, 2024
Patent Number:
12015793
Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific…
Predicting and verifying regions of interest selections
Granted: June 18, 2024
Patent Number:
12015787
Video images are rendered in viewports of content viewers. Each content viewer views video images through a respective viewport in the viewports. Spatial locations in the video images to which foveal visions of the content viewers are directed are determined. ROIs in the video images are identified based on the spatial locations in the video images.
Integrated image reshaping and video coding
Granted: June 18, 2024
Patent Number:
12015786
Given a sequence of images in a first codeword representation, methods, processes, and systems are presented for integrating reshaping into a next generation video codec for encoding and decoding the images, wherein reshaping allows part of the images to be coded in a second codeword representation which allows more efficient compression than using the first codeword representation. A variety of architectures are discussed, including: an out-of-loop reshaping architecture, an in-loop-for…
Transforming audio signals captured in different formats into a reduced number of formats for simplifying encoding and decoding operations
Granted: June 18, 2024
Patent Number:
12014745
The disclosed embodiments enable converting audio signals captured in various formats by various capture devices into a limited number of formats that can be processed by an audio codec (e.g., an Immersive Voice and Audio Services (IVAS) codec). In an embodiment, a simplification unit of the audio device receives an audio signal captured by one or more audio capture devices coupled to the audio device. The simplification unit determines whether the audio signal is in a format that is…
Methods and apparatuses of encoding/decoding intra prediction mode using candidate intra prediction modes
Granted: June 11, 2024
Patent Number:
12010328
A method and an apparatus of encoding/decoding intra prediction mode using a plurality of candidate intra prediction modes are disclosed. The method includes deriving three candidate intra prediction modes about a current block and deriving an intra prediction mode of the current block.
Surround area detection and blending for image filtering
Granted: June 4, 2024
Patent Number:
12002186
Methods and systems to detect and blend a surround area to avoid filtering artifact due to the area in image filtering are disclosed. The described methods include a compensation step and can be applied to arbitrary images with padded areas of arbitrary shape, such as letterboxes, pillar-boxes, ovals, or other shapes, including logos and close captions. Such methods detect the surround areas in the image with possible compression artifact and noise, and then perform blending to minimize…
Frame-rate scalable video coding
Granted: June 4, 2024
Patent Number:
12003741
Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific…
Acoustic echo cancellation control for distributed audio devices
Granted: June 4, 2024
Patent Number:
12003673
An audio processing method may involve receiving output signals from each microphone of a plurality of microphones in an audio environment, the output signals corresponding to a current utterance of a person and determining, based on the output signals, one or more aspects of context information relating to the person, including an estimated current proximity of the person to one or more microphone locations. The method may involve selecting two or more loudspeaker-equipped audio devices…
Audio decoder and decoding method
Granted: June 4, 2024
Patent Number:
12002480
A method for representing a second presentation of audio channels or objects as a data stream, the method comprising the steps of: (a) providing a set of base signals, the base signals representing a first presentation of the audio channels or objects; (b) providing a set of transformation parameters, the transformation parameters intended to transform the first presentation into the second presentation; the transformation parameters further being specified for at least two frequency…
