Generating Binaural Audio in Response to Multi-Channel Audio Using at Least One Feedback Delay Network
Granted: March 6, 2025
Application Number:
20250080943
In some embodiments, virtualization methods for generating a binaural signal in response to channels of a multi-channel audio signal, which apply a binaural room impulse response (BRIR) to each channel including by using at least one feedback delay network (FDN) to apply a common late reverberation to a downmix of the channels. In some embodiments, input signal channels are processed in a first processing path to apply to each channel a direct response and early reflection portion of a…
METHOD AND DEVICE FOR DECODING A HIGHER-ORDER AMBISONICS (HOA) REPRESENTATION OF AN AUDIO SOUNDFIELD
Granted: March 6, 2025
Application Number:
20250080937
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 rendering an audio sound field representation for arbitrary spatial loudspeaker setups and/or by a decoder that decodes based on a decode matrix (D). The decode matrix (D) is based on smoothing and scaling of a first decode matrix {circumflex over…
METHODS, APPARATUS AND SYSTEMS FOR DECOMPRESSING A HIGHER ORDER AMBISONICS (HOA) SIGNAL
Granted: March 6, 2025
Application Number:
20250080934
A method for compressing a HOA signal being an input HOA representation with input time frames (C(k)) of HOA coefficient sequences comprises spatial HOA encoding of the input time frames and subsequent perceptual encoding and source encoding. Each input time frame is decomposed (802) into a frame of predominant sound signals (XPS(k?1)) and a frame of an ambient HOA component ({tilde over (C)}AMB(k?1)). The ambient HOA component ({tilde over (C)}AMB(k?1)) comprises, in a layered mode,…
PREDICTIVE MOTION VECTOR CODING
Granted: March 6, 2025
Application Number:
20250080749
Overlapped block disparity estimation and compensation is described. Compensating for images with overlapped block disparity compensation (OBDC) involves determining if OBDC is enabled in a video bit stream, and determining if OBDC is enabled for one or more macroblocks that neighbor a first macroblock within the video bit stream. The neighboring macroblocks may be transform coded. If OBDC is enabled in the video bit stream and for the one or more neighboring macroblocks, predictions may…
DETECTION AND ENHANCEMENT OF SPEECH IN BINAURAL RECORDINGS
Granted: March 6, 2025
Application Number:
20250078858
Disclosed herein are method, systems, and computer-program products for segmenting a binaural recording of speech into parts containing self-speech and parts containing external speech, and processing each category with different settings, to obtain an enhanced overall presentation. The segmentation is based on a combination of: i) feature-based frame-by-frame classification, and ii) detecting dissimilarity by statistical methods. The segmentation information is then used by a speech…
SYSTEM AND METHOD FOR NON-DESTRUCTIVELY NORMALIZING LOUDNESS OF AUDIO SIGNALS WITHIN PORTABLE DEVICES
Granted: March 6, 2025
Application Number:
20250078849
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…
SYSTEMS, METHODS AND APPARATUS FOR CONVERSION FROM CHANNEL-BASED AUDIO TO OBJECT-BASED AUDIO
Granted: February 27, 2025
Application Number:
20250069611
Embodiments are disclosed for channel-based audio (CBA) (e.g., 22.2-ch audio) to object-based audio (OBA) conversion. The conversion includes converting CBA metadata to object audio metadata (OAMD) and reordering the CBA channels based on channel shuffle information derived in accordance with channel ordering constraints of the OAMD. The OBA with reordered channels is rendered in a playback device using the OAMD or in a source device, such as a set-top box or audio/video recorder. In an…
PROCESSING OF MICROPHONE SIGNALS FOR SPATIAL PLAYBACK
Granted: February 27, 2025
Application Number:
20250071479
Disclosed are methods and systems which convert a multi-microphone input signal to a multichannel output signal making use of a time-and frequency-varying matrix. For each time and frequency tile, the matrix is derived as a function of a dominant direction of arrival and a steering strength parameter. Likewise, the dominant direction and steering strength parameter are derived from characteristics of the multi-microphone signals, where those characteristics include values representative…
AUDIO SIGNAL LOUDNESS CONTROL
Granted: February 27, 2025
Application Number:
20250070737
Example embodiments disclosed herein relate to audio signal loudness control. A method for controlling loudness of an audio signal is disclosed. The method includes responsive to determining presence of a noise signal, deriving a target partial loudness adjustment based, at least in part, on at least one of a first factor related to the noise signal and a second factor related to the audio signal. The method further includes determining a target partial loudness of the audio signal…
COMPANDING SYSTEM AND METHOD TO REDUCE QUANTIZATION NOISE USING ADVANCED SPECTRAL EXTENSION
Granted: February 27, 2025
Application Number:
20250069616
Embodiments are directed to a companding method and system for reducing coding noise in an audio codec. A compression process reduces an original dynamic range of an initial audio signal through a compression process that divides the initial audio signal into a plurality of segments using a defined window shape, calculates a wideband gain in the frequency domain using a non-energy based average of frequency domain samples of the initial audio signal, and applies individual gain values to…
ADAPTIVE PROCESSING WITH MULTIPLE MEDIA PROCESSING NODES
Granted: February 27, 2025
Application Number:
20250069607
Techniques for adaptive processing of media data based on separate data specifying a state of the media data are provided. A device in a media processing chain may determine whether a type of media processing has already been performed on an input version of media data. If so, the device may adapt its processing of the media data to disable performing the type of media processing. If not, the device performs the type of media processing. The device may create a state of the media data…
INTERACTIVE MOTION BLUR ON MOBILE DEVICES
Granted: February 27, 2025
Application Number:
20250069200
Novel methods and systems are described for providing interactive motion blur on an image by motion inputs from movements of the mobile device displaying the image. The device can process the motion blur by modules providing motion blur parameter estimation, blur application, and image composition based on metadata and a baseline image from the encoder. A pre-loaded filter bank can provide blur kernels for blur application.
COMPRESSION OF MULTIPLANE IMAGES
Granted: February 20, 2025
Application Number:
20250063208
Methods and apparatus for compressing and decompressing MPI videos. According to an example embodiment, a method of compressing an MPI video includes splitting the MPI video into first and second frame sequences including texture and alpha frames of multiplane images, respectively. The method further includes applying sets of preprocessing operations to convert the first frame sequence into a third frame sequence and to convert the second frame sequence into a fourth frame sequence.…
FILM GRAIN PARAMETERS ADAPTATION BASED ON VIEWING ENVIRONMENT
Granted: February 20, 2025
Application Number:
20250063203
Methods, systems, and bitstream syntax are described for metadata signaling and film-grain parameter adaptation based on a viewing environment which may differ from a reference environment. Example adaptation models are provided for viewing parameters that include: ambient room illumination, viewing distance, and pixels per inch in a target display. Example systems include a single reference viewing environment model and a multi-reference viewing environment model supporting adaptation…
SOURCE COLOR VOLUME INFORMATION MESSAGING
Granted: February 20, 2025
Application Number:
20250063202
Methods are described to communicate source color volume information in a coded bitstream using SEI messaging. Such data include at least the minimum, maximum, and average luminance values in the source data plus optional data that may include the color volume x and y chromaticity coordinates for the input color primaries (e.g., red, green, and blue) of the source data, and the color x and y chromaticity coordinates for the color primaries corresponding to the minimum, average, and…
SOURCE COLOR VOLUME INFORMATION MESSAGING
Granted: February 20, 2025
Application Number:
20250063201
Methods are described to communicate source color volume information in a coded bitstream using SEI messaging. Such data include at least the minimum, maximum, and average luminance values in the source data plus optional data that may include the color volume x and y chromaticity coordinates for the input color primaries (e.g., red, green, and blue) of the source data, and the color x and y chromaticity coordinates for the color primaries corresponding to the minimum, average, and…
QUANTIZATION PARAMETER SIGNALING
Granted: February 20, 2025
Application Number:
20250063199
A quantization parameter signaling mechanism for both SDR and HDR content in video coding is described using two approaches. The first approach is to send the user-defined QpC table directly in high level syntax. This leads to more flexible and efficient QP control for future codec development and video content coding. The second approach is to signal luma and chroma QPs independently. This approach eliminates the need for QpC tables and removes the dependency of chroma quantization…
VOLUME LEVELER CONTROLLER AND CONTROLLING METHOD
Granted: February 20, 2025
Application Number:
20250062736
Volume leveler controller and controlling method are disclosed. In one embodiment, A volume leveler controller includes an audio content classifier for identifying the content type of an audio signal in real time; and an adjusting unit for adjusting a volume leveler in a continuous manner based on the content type as identified. The adjusting unit may configured to positively correlate the dynamic gain of the volume leveler with informative content types of the audio signal, and…
PRE-CONDITIONING AUDIO FOR MACHINE PERCEPTION
Granted: February 20, 2025
Application Number:
20250061914
An apparatus and method of pre-conditioning audio for machine perception. Machine perception differs from human perception, and different processing parameters are used for machine perception applications (e.g., speech to text processing) as compared to those used for human perception applications (e.g., voice communications). These different parameters may result in pre-conditioned audio that is worsened for human perception yet improved for machine perception.
ENCODING AND DECODING MULTIPLE-INTENT IMAGES AND VIDEO USING METADATA
Granted: February 13, 2025
Application Number:
20250054204
Systems and methods for encoding and decoding multiple-intent images and video using metadata. When encoding an image as a multiple-intent image, at least one appearance adjustment may be made to the image. Metadata characterizing the at least one appearance adjustment may be included in, or transmitted along with, the encoded multiple-intent image. When decoding a multiple-intent image, a system may obtain a selection of a desired rendering intent and, based on that selection, either…
