SYSTEM FOR RENDERING AND PLAYBACK OF OBJECT BASED AUDIO IN VARIOUS LISTENING ENVIRONMENTS
Granted: January 27, 2022
Application Number:
20220030373
Embodiments are described for a system of rendering object-based audio content through a system that includes individually addressable drivers, including at least one driver that is configured to project sound waves toward one or more surfaces within a listening environment for reflection to a listening area within the listening environment; a renderer configured to receive and process audio streams and one or more metadata sets associated with each of the audio streams and specifying a…
METHOD OF RENDERING ONE OR MORE CAPTURED AUDIO SOUNDFIELDS TO A LISTENER
Granted: January 27, 2022
Application Number:
20220030370
A computer implemented system for rendering captured audio soundfields to a listener comprises apparatus to deliver the audio soundfields to the listener. The delivery apparatus delivers the audio soundfields to the listener with first and second audio elements perceived by the listener as emanating from first and second virtual source locations, respectively, and with the first audio element and/or the second audio element delivered to the listener from a third virtual source location.…
BACKGROUND NOISE ESTIMATION USING GAP CONFIDENCE
Granted: January 27, 2022
Application Number:
20220028405
A noise estimation method including steps of generating gap confidence values in response to microphone output and playback signals, and using the gap confidence values to generate an estimate of background noise in a playback environment. Each gap confidence value is indicative of confidence of presence of a gap at a corresponding time in the playback signal, and may be a combination of candidate noise estimates weighted by the gap confidence values. Generation of the candidate noise…
ENHANCEMENT OF SPATIAL AUDIO SIGNALS BY MODULATED DECORRELATION
Granted: January 27, 2022
Application Number:
20220028400
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 to produce a first set of decorrelated channels, the first decorrelation process maintaining an inter-channel correlation of the set of input audio channels. A first modulation…
METHODS AND SYSTEMS FOR HIGH DYNAMIC RANGE IMAGE PROJECTORS
Granted: January 27, 2022
Application Number:
20220026785
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 comprise a reflective surface which may reflecting/recycle light down said integrating rod; of reflecting light down said integrating rod; a relay optical system, said relay optical…
AUDIO PROCESSING IN IMMERSIVE AUDIO SERVICES
Granted: January 20, 2022
Application Number:
20220022000
The disclosure herein generally relates to capturing, acoustic pre-processing, encoding, decoding, and rendering of directional audio of an audio scene. In particular, it relates to a device adapted to modify a directional property of a captured directional audio in response to spatial data of a microphone system capturing the directional audio. The disclosure further relates to a rendering device configured to modify a directional property of a received directional audio in response to…
METHODS, APPARATUS AND SYSTEMS FOR ENCODING AND DECODING OF MULTI-CHANNEL AMBISONICS AUDIO DATA
Granted: January 20, 2022
Application Number:
20220020382
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…
SYSTEM AND METHOD FOR OPTIMIZING LOUDNESS AND DYNAMIC RANGE ACROSS DIFFERENT PLAYBACK DEVICES
Granted: January 20, 2022
Application Number:
20220019404
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…
METHOD FOR ENCODING AND METHOD FOR DECODING A LUT AND CORRESPONDING DEVICES
Granted: January 6, 2022
Application Number:
20220007054
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.
REPRESENTING SPATIAL AUDIO BY MEANS OF AN AUDIO SIGNAL AND ASSOCIATED METADATA
Granted: January 6, 2022
Application Number:
20220007126
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…
VIDEO ENCODER AND ENCODING METHOD
Granted: January 6, 2022
Application Number:
20220007040
An image sensor includes a plurality of pixels, each pixel belonging to one of N subframes each characterized by (a) a same exposure-time sequence that includes a short exposure-time alternating with a long exposure-time, and (b) a respective temporal offset equal to a multiple of the short exposure-time. A method for encoding a video stream captured by the image sensor includes (i) for each subframe, linearly combining a long-exposure image, captured at the long exposure-time, and a…
TEMPORAL MODELING OF PHASE MODULATORS IN MULTI-MODULATION PROJECTION
Granted: January 6, 2022
Application Number:
20220006984
A novel projection system includes a light source, a phase modulator, an amplitude modulator, and a controller having temporal lightfield simulation capabilities. The phase modulator spatially modulates a lightfield from the light source to generate an intermediate image on the amplitude modulator. The amplitude modulator spatially modulates the intermediate image to form a final image. The controller models the phase state of the phase modulator during transitions between phase…
TRANSMISSION-AGNOSTIC PRESENTATION-BASED PROGRAM LOUDNESS
Granted: January 6, 2022
Application Number:
20220005489
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 in order to attain a desired loudness level of an output audio signal.
SYSTEM AND TOOLS FOR ENHANCED 3D AUDIO AUTHORING AND RENDERING
Granted: December 23, 2021
Application Number:
20210400421
Improved tools for authoring and rendering audio reproduction data are provided. Some such authoring tools allow audio reproduction data to be generalized for a wide variety of reproduction environments. Audio reproduction data may be authored by creating metadata for audio objects. The metadata may be created with reference to speaker zones. During the rendering process, the audio reproduction data may be reproduced according to the reproduction speaker layout of a particular…
MULTIPLE DISPERSION STANDALONE STEREO LOUDSPEAKERS
Granted: December 23, 2021
Application Number:
20210400376
Embodiments are directed to a speaker system that contains an array of multiple dispersion drivers that creates an expansive acoustic pattern to playback multi-channel audio content through a standalone speaker. The speaker system comprises an interface receiving stereo audio; an upmixer generating surround sound formatted audio from the stereo audio including one or more height channels; a virtualizer/downmixer component coupled to the upmixer and generating speaker feeds for two or…
Digital Point Spread Function (DPSF) and Dual Modulation Projection (including Lasers) using DPSF
Granted: December 16, 2021
Application Number:
20210392309
A digital PSF for use in a dual modulation display. The invention allows the use of less than optimal point spread (PSF) functions in the optics between the pre-modulator and primary modulator of a dual modulation projection system. This technique uses multiple halftones per frame in the pre-modulator synchronized with a modified bit sequence in the primary modulator to produce a compensation image that reduces the errors produced by the sub-optimal PSF. The invention includes the…
METHOD AND APPARATUS FOR ENCODING AND DECODING AN HOA REPRESENTATION
Granted: December 16, 2021
Application Number:
20210390964
The present invention relates to methods and apparatus for encoding an HOA signal representation (c(t)) of a sound field having an order of N and a number O=(N+1)2 of coefficient sequences to a mezzanine HOA signal representation (wMEZZ(t)). The present invention further relates to methods and apparatus for decoding a reconstructed HOA signal representation from the mezzanine HOA signal representation.
APERTURE SHARING FOR HIGHLIGHT PROJECTION
Granted: December 16, 2021
Application Number:
20210389656
A novel projection system includes a base signal source, a highlight signal source, a base/highlight destination, and a shared optical element. A base signal provided by the base source and a highlight signal provided by the highlight source are combined by the shared optical element. In a particular embodiment, the base signal source and the highlight signal source each include a light source, a spatial light modulator, and optics, and the base/highlight destination includes optics and…
CREATIVE INTENT SCALABILITY VIA PHYSIOLOGICAL MONITORING
Granted: December 9, 2021
Application Number:
20210385533
Creative intent input describing emotion expectations and narrative information relating to media content is received. Expected physiologically observable states relating to the media content are generated based on the creative intent input. An audiovisual content signal with the media content and media metadata comprising the physiologically observable states is provided to a playback apparatus. The audiovisual content signal causes the playback device to use physiological monitoring…
METHODS AND DEVICES FOR GENERATING OR DECODING A BITSTREAM COMPRISING IMMERSIVE AUDIO SIGNALS
Granted: December 2, 2021
Application Number:
20210375297
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…
