SENSOR DATA PREDICTION
Granted: May 2, 2024
Application Number:
20240147180
Systems, methods, and computer program products implementing a sensor data prediction algorithm are disclosed. An example method comprises receiving motion data representing motions of a head-mounted listening device; transforming the motion data into quaternion domain; predicting, by one or more processors, future motions of the head-mounted listening device, the predicting including creating angular acceleration data from the transformed motion data and applying one or more smoothing…
METHOD AND APPARATUS FOR COMPRESSING AND DECOMPRESSING A HIGHER ORDER AMBISONICS SIGNAL REPRESENTATION
Granted: May 2, 2024
Application Number:
20240147173
A method and apparatus for decompressing a Higher Order Ambisonics (HOA) signal representation is disclosed. The apparatus includes an input interface that receives an encoded directional signal and an encoded ambient signal and an audio decoder that perceptually decodes the encoded directional signal and encoded ambient signal to produce a decoded directional signal and a decoded ambient signal, respectively. The apparatus further includes an extractor for obtaining side information…
PERCEPTUAL LUMINANCE NONLINEARITY-BASED IMAGE DATA EXCHANGE ACROSS DIFFERENT DISPLAY CAPABILITIES
Granted: May 2, 2024
Application Number:
20240144895
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…
PROJECTION SYSTEM AND METHOD FOR ETENDUE UTILIZATION
Granted: May 2, 2024
Application Number:
20240142861
A projection system for etendue utilization includes a first light source configured to emit a light, the light including a first etendue component and a second etendue component, wherein the first etendue component has a lower etendue than the second etendue component, a first projection optics configured to project a first image on a screen, a second projection optics configured to project a second image on the screen, and an etendue splitter component. The etendue splitter component…
IMMERSIVE VOICE AND AUDIO SERVICES (IVAS) WITH ADAPTIVE DOWNMIX STRATEGIES
Granted: April 25, 2024
Application Number:
20240135937
Disclosed is an audio signal encoding/decoding method that uses an encoding downmix strategy applied at an encoder that is different than a decoding re-mix/upmix strategy applied at a decoder. Based on the type of downmix coding scheme, the method comprises: computing input downmixing gains to be applied to the input audio signal to construct a primary downmix channel; determining downmix scaling gains to scale the primary downmix channel; generating prediction gains based on the input…
METHODS, APPARATUS AND SYSTEMS FOR ENCODING AND DECODING OF MULTI-CHANNEL AMBISONICS AUDIO DATA
Granted: April 18, 2024
Application Number:
20240127831
Conventional audio compression technologies perform a standardized signal transformation, independent of the type of the content. Multi-channel signals are decomposed into their signal components, subsequently quantized and encoded. This is disadvantageous due to lack of knowledge on the characteristics of scene composition, especially for e.g. multi-channel audio or Higher-Order Ambisonics (HOA) content. A method for decoding an encoded bitstream of multi-channel audio data and…
CANVAS SIZE SCALABLE VIDEO CODING
Granted: April 11, 2024
Application Number:
20240121424
Methods and systems for canvas size scalability across the same or different bitstream layers of a video coded bitstream are described. Offset parameters for a conformance window, a reference region of interest (ROI) in a reference layer, and a current ROI in a current layer are received. The width and height of a current ROI and a reference ROI are computed based on the offset parameters and they are used to generate a width and height scaling factor to be used by a reference picture…
REPRESENTING SPATIAL AUDIO BY MEANS OF AN AUDIO SIGNAL AND ASSOCIATED METADATA
Granted: April 4, 2024
Application Number:
20240114307
There is provided encoding and decoding methods for representing spatial audio that is a combination of directional sound and diffuse sound. An exemplary encoding method includes inter alia creating a single- or multi-channel downmix audio signal by downmixing input audio signals from a plurality of microphones in an audio capture unit capturing the spatial audio; determining first metadata parameters associated with the downmix audio signal, wherein the first metadata parameters are…
PROGRESSIVE CALCULATION AND APPLICATION OF RENDERING CONFIGURATIONS FOR DYNAMIC APPLICATIONS
Granted: April 4, 2024
Application Number:
20240114309
Some examples involve rendering received audio data by determining a first relative activation of a set of loudspeakers in an environment according to a first rendering configuration corresponding to a first set of speaker activations, receiving a first rendering transition indication indicating a transition from the first rendering configuration to a second rendering configuration and determining a second set of speaker activations corresponding to a simplified version of the second…
FREQUENCY DOMAIN MULTIPLEXING OF SPATIAL AUDIO FOR MULTIPLE LISTENER SWEET SPOTS
Granted: April 4, 2024
Application Number:
20240114308
Some methods involve receiving, by a control system that is configured for implementing a plurality of renderers, audio data and listening configuration data for a plurality of listening configurations, each listening configuration of the plurality of listening configurations corresponding to a listening position and a listening orientation in an audio environment, and rendering, by each renderer and according to the listening configuration data, the received audio data to obtain a set…
AUDIO FILTERBANK WITH DECORRELATING COMPONENTS
Granted: April 4, 2024
Application Number:
20240114306
An multi-input, multi-output audio process is implemented as a linear system for use in an audio filterbank to convert a set of frequency-domain input audio signals into a set of frequency-domain output audio signals. A transfer function from one input to one output is defined as a frequency dependent gain function. In some implementations, the transfer function includes a direct component that is substantially defined as a frequency dependent gain, and one or more decorrelated…
CROSS-ASSET GUIDE CHROMA REFORMATTING FOR MULTI-ASSET IMAGING FORMAT
Granted: April 4, 2024
Application Number:
20240114153
A first image and a second image of different dynamic ranges are derived from the same source image. Based on a chroma sampling format of the first image, it is determined whether edge preserving filtering is to be used to generate chroma upsampled image data in a reconstructed image. If so, image metadata for performing the edge preserving filtering is generated. The first image, the second image and the image metadata are encoded into an image data container to enable a recipient…
INTRA-PREDICTION FOR HEXAGONALLY-SAMPLED VIDEO AND IMAGE COMPRESSION
Granted: April 4, 2024
Application Number:
20240114127
Methods, systems, and devices implement intra-prediction for hexagonally-sampled compression and decompression of videos and images having a regular grid of hexagonally-shaped pixels. For encoding, a prediction unit (PU) shape is selected at a sequence level from the group consisting of parallelogram, zigzag-square, hexagonal super-pixel, a rectangular zigzag and an arrow, and the hexagonally-sampled image is divided into regions based on the PU shape. For each region: a prediction mode…
FREQUENCY DOMAIN MULTIPLEXING OF SPATIAL AUDIO FOR MULTIPLE LISTENER SWEET SPOTS
Granted: March 28, 2024
Application Number:
20240107255
Some methods involve receiving, by a control system configured for implementing a plurality of Tenderers, audio data and listening configuration data for a plurality of listening configurations, each listening configuration of the plurality of listening configurations corresponding to a listening position and a listening orientation in an audio environment, and rendering, by each Tenderer and according to the listening configuration data, the received audio data to obtain a set of…
INSERTION OF FORCED GAPS FOR PERVASIVE LISTENING
Granted: March 28, 2024
Application Number:
20240107252
An attenuation or “gap” may be inserted into at least a first frequency range of at least first and second audio playback signals of a content stream during at least a first time interval to generate at least first and second modified audio playback signals. Corresponding audio device playback sound may be provided by at least first and second audio devices. At least one microphone may detect at least the first audio device playback sound and the second audio device playback sound…
SPATIAL NOISE FILLING IN MULTI-CHANNEL CODEC
Granted: March 28, 2024
Application Number:
20240105192
Embodiments are disclosed for spatial noise filling in multi-channel codecs. In an embodiment, a method of regenerating background noise ambience in a multi-channel codec by generating spatial hole filling noise comprises: computing noise estimates based on a primary downmix channel generated from an input audio signal representing a spatial audio scene with background noise ambience; computing spectral shaping filter coefficients based on the noise estimates; spectrally shaping the…
Audio Encoding and Decoding Using Presentation Transform Parameters
Granted: March 28, 2024
Application Number:
20240105186
A method for encoding an input audio stream including the steps of obtaining a first playback stream presentation of the input audio stream intended for reproduction on a first audio reproduction system, obtaining a second playback stream presentation of the input audio stream intended for reproduction on a second audio reproduction system, determining a set of transform parameters suitable for transforming an intermediate playback stream presentation to an approximation of the second…
SYSTEM AND METHOD FOR OPTIMIZING LOUDNESS AND DYNAMIC RANGE ACROSS DIFFERENT PLAYBACK DEVICES
Granted: March 28, 2024
Application Number:
20240103801
Embodiments are directed to a method and system for receiving, in a bitstream, metadata associated with the audio data, and analyzing the metadata to determine whether a loudness parameter for a first group of audio playback devices are available in the bitstream. Responsive to determining that the parameters are present for the first group, the system uses the parameters and audio data to render audio. Responsive to determining that the loudness parameters are not present for the first…
SYSTEMS AND METHODS FOR LOCAL DIMMING IN MULTI-MODULATION DISPLAYS
Granted: March 21, 2024
Application Number:
20240098229
Dual and multi-modulator projector display systems and techniques are disclosed. In one embodiment, a projector display system comprises a light source; a controller, a first modulator, receiving light from the light source and rendering a halftone image of said the input image; a blurring optical system that blurs said halftone image with a Point Spread Function (PSF); and a second modulator receiving the blurred halftone image and rendering a pulse width modulated image which may be…
AUDIO CHANNEL SPATIAL TRANSLATION
Granted: March 21, 2024
Application Number:
20240098438
The present invention is directed to methods and apparatus for translating a first plurality of audio input channels to a second plurality of audio output channels. This includes determining that there is pair-wise coding among any of the first plurality of audio input channels, determining an input/output-mapping matrix for mapping at least a first set of the first plurality of audio input channels to at least a second set of the second plurality of audio output channels; and deriving…
