US 2022/0101866 A1 · AUDIO ENCODER WITH A SIGNAL-DEPENDENT NUMBER AND PRECISION CONTROL, AUDIO DECODER, AND RELATED METHODS AND COMPUTER PROGRAMS

Abstract

An audio encoder for encoding audio input data has: a preprocessor for preprocessing the audio input data to obtain audio data to be coded; a coder processor for coding the audio data to be coded; and a controller for controlling the coder processor so that, depending on a first signal characteristic of a first frame of the audio data to be coded, a number of audio data items of the audio data to be coded by the coder processor for the first frame is reduced compared to a second signal characteristic of a second frame, and a first number of information units used for coding the reduced number of audio data items for the first frame is stronger enhanced compared to a second number of information units for the second frame.

Claims35

Dependent claims

An audio encoder for encoding audio input data, comprising:

a preprocessor for preprocessing the audio input data to acquire audio data to be coded;
a coder processor for coding the audio data to be coded;
and
a controller for controlling the coder processor so that, depending on a first signal characteristic of a first frame of the audio data to be coded, a number of audio data items of the audio data to be coded by the coder processor for the first frame is reduced compared to a second signal characteristic of a second frame, and a first number of information units used for coding the reduced number of audio data items for the first frame is stronger enhanced compared to a second number of information units for the second frame.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

17/546,540Filed 9 Dec 2021

Priority

17 Jun 2019

Published

31 Mar 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

G10L 19/22
Vocoders using multiple modes: mode decision, i.e. based on audio signal content versus external parameters
G10L 19/26
Using predictive techniques: pre-filtering or post-filtering
G10L 19/002
Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals,…:…
G10L 19/20
Vocoders using multiple modes: using sound class specific coding, hybrid encoders or object based coding

Audio encoder with a signal-dependent number and precision control, audio decoder, and related methods and computer programs

Life of this patent

Audio encoder with a signal-dependent number and precision control, audio decoder, and related methods and computer programs

Life of this patent

Abstract

Claims35