Method, Apparatus or Systems for Processing Audio Objects
Granted: July 9, 2020
Application Number:
20200221249
Diffuse or spatially large audio objects may be identified for special processing. A decorrelation process may be performed on audio signals corresponding to the large audio objects to produce decorrelated large audio object audio signals. These decorrelated large audio object audio signals may be associated with object locations, which may be stationary or time-varying locations. For example, the decorrelated large audio object audio signals may be rendered to virtual or actual speaker…
PROCESSING VIDEO INCLUDING A PHYSICAL WRITING SURFACE
Granted: July 9, 2020
Application Number:
20200220906
A method of processing of a sequence of video frames from a camera capturing a writing surface for subsequent transmission to at least one of a remote videoconferencing client and a remote videoconferencing server. The method comprises receiving the sequence of video frames from the camera; and selecting an image area of interest in the video frames, comprising selecting one of a sub-area of the video frames and an entire area of the video frames. The method also comprises, for each…
AUDIO ENCODER AND DECODER WITH DYNAMIC RANGE COMPRESSION METADATA
Granted: July 9, 2020
Application Number:
20200219523
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 the header. The one or more metadata payloads include dynamic range compression (DRC) metadata, and the DRC metadata is or includes profile metadata indicative of whether the DRC…
PERCEPTUAL LUMINANCE NONLINEARITY-BASED IMAGE DATA EXCHANGE ACROSS DIFFERENT DISPLAY CAPABILITIES
Granted: July 2, 2020
Application Number:
20200211504
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 is based on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is…
SYSTEM FOR MAINTAINING REVERSIBLE DYNAMIC RANGE CONTROL INFORMATION ASSOCIATED WITH PARAMETRIC AUDIO CODERS
Granted: June 25, 2020
Application Number:
20200202878
On the basis of a bitstream (P), an n-channel audio signal (X) is reconstructed by deriving an m-channel core signal (Y) and multichannel coding parameters (?) from the bitstream, where 1?m<n. Also derived from the bitstream are pre-processing dynamic range control, DRC, parameters (DRC2) quantifying an encoder-side dynamic range limiting of the core signal. The n-channel audio signal is obtained by parametric synthesis in accordance with the multichannel coding parameters and while…
LUMINANCE ADAPTION TO MINIMIZE DISCOMFORT AND IMPROVE VISIBILITY
Granted: June 25, 2020
Application Number:
20200202814
One or more media contents are received. A viewer's light adaptive states are predicted as a function of time as if the viewer is watching display mapped images derived from the one or more media contents. The viewer's light adaptive states are used to detect an excessive change in luminance in a specific media content portion of the one or more media contents. The excessive change in luminance in the specific media content portion of the one or more media contents is caused to be…
SPECTRAL SHAPING FOR 3D IMAGING
Granted: June 25, 2020
Application Number:
20200201160
A novel light source for a 3D display system includes a plurality of left eye light emitters and a plurality of right eye light emitters. The left eye emitters include a broad spectral distribution emitter and an overlapping narrow spectral distribution emitter in each of the blue, green, and red color bands. Similarly, the right eye emitters include a broad spectral distribution emitter and an overlapping narrow spectral distribution emitter in each of the blue, green, and red color…
AUDIO INPUT AND OUTPUT DEVICE WITH STREAMING CAPABILITIES
Granted: June 11, 2020
Application Number:
20200184983
Methods, systems, and computer program products that provide streaming capabilities to audio input and output devices are disclosed. An audio processing device connects an upstream device to a downstream device. The upstream device is plugged into an input port of the audio processing device. The audio processing device intercepts a signal from the upstream device to the downstream device. The audio processing device converts the signal to digital data and streams the digital data to a…
METHOD FOR ENCODING AND METHOD FOR DECODING A LUT AND CORRESPONDING DEVICES
Granted: June 4, 2020
Application Number:
20200177917
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, SYSTEMS AND APPARATUS FOR CONVERSION OF SPATIAL AUDIO FORMAT(S) TO SPEAKER SIGNALS
Granted: June 4, 2020
Application Number:
20200178015
The present disclosure relates to a method of converting an audio signal in an intermediate signal format to a set of speaker feeds suitable for playback by an array of speakers. The audio signal in the intermediate signal format is obtainable from an input audio signal by means of a spatial panning function. The method comprises determining a discrete panning function for the array of speakers, determining a target panning function based on the discrete panning function, wherein…
Detecting and Mitigating Audio-Visual Incongruence
Granted: June 4, 2020
Application Number:
20200177837
Systems and methods are described for detecting and remedying potential incongruence in a video conference. A camera of a video conferencing system may capture video images of a conference room. A processor of the video conferencing system may identify locations of a plurality of participants within an image plane of a video image. Using face and shape detection, a location of a center point of each identified participant's torso may be calculated. A region of congruence bounded by key…
SYSTEM AND METHOD FOR NON-DESTRUCTIVELY NORMALIZING LOUDNESS OF AUDIO SIGNALS WITHIN PORTABLE DEVICES
Granted: June 4, 2020
Application Number:
20200176008
Many portable playback devices cannot decode and playback encoded audio content having wide bandwidth and wide dynamic range with consistent loudness and intelligibility unless the encoded audio content has been prepared specially for these devices. This problem can be overcome by including with the encoded content some metadata that specifies a suitable dynamic range compression profile by either absolute values or differential values relative to another known compression profile. A…
Processing of a Multi-Channel Spatial Audio Format Input Signal
Granted: May 28, 2020
Application Number:
20200169824
Apparatus, computer readable media and methods for processing a multi-channel, spatial audio format input signal. For example, one such method comprises determining object location metadata based on the received spatial audio format input signal; and extracting object audio signals based on the received spatial audio format input signal, wherein the extracting object audio signals based on the received spatial audio format input signal includes determining object audio signals and…
SINGLE-CHANNEL INVERSE MAPPING FOR IMAGE/VIDEO PROCESSING
Granted: May 28, 2020
Application Number:
20200169742
In some embodiments, an encoder device is disclosed to generate single-channel standard dynamic range/high dynamic range content predictors. The device receives a standard dynamic range image content and a representation of a high dynamic range image content. The device determines a first mapping function to map the standard dynamic range image content to the high dynamic range image content. The device generates a single channel prediction metadata based on the first mapping function,…
METHODS AND SYSTEMS FOR DESIGNING AND APPLYING NUMERICALLY OPTIMIZED BINAURAL ROOM IMPULSE RESPONSES
Granted: May 21, 2020
Application Number:
20200162835
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 AND CODING FOR HDR AND WIDE COLOR GAMUT SIGNALS
Granted: May 21, 2020
Application Number:
20200162759
In a method to improve the coding efficiency of high-dynamic range (HDR) images, a decoder parses sequence processing set (SPS) data from an input coded bitstream to detect that an HDR extension syntax structure is present in the parsed SPS data. It extracts from the HDR extension syntax structure post-processing information that includes one or more of a color space enabled flag, a color enhancement enabled flag, an adaptive reshaping enabled flag, a dynamic range conversion flag, a…
Methods and Devices for Improvements Relating to Voice Quality Estimation
Granted: May 21, 2020
Application Number:
20200162603
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 reducing a prediction error of the voice quality estimation by considering the content of lost packets. Furthermore, this disclosure provides a method and device which uses a voice quality estimating algorithm to calculate the voice quality…
OPTICAL SYSTEM FOR IMAGE PROJECTORS
Granted: May 21, 2020
Application Number:
20200159032
A projector system comprising a laser light source, a collimating lens, a fly-eye lens, an integrating rod and a first modulator is disclosed. The light from a laser light source/fiber illuminates a collimator to substantially collimate the light and then is transmitted through a fly's-eye lens. The fly's-eye lens provides a desired angular/spatial light distribution for further processing to a first modulator of the projector system.
Methods, Apparatus and Systems for Determining Reconstructed Audio Signal
Granted: May 7, 2020
Application Number:
20200143817
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 decoded baseband audio signal. The method further includes generating a high-frequency reconstructed signal by copying a number of consecutive subband signals of the plurality…
Audio Control Using Auditory Event Detection
Granted: May 7, 2020
Application Number:
20200144979
In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by…
