Apparatus and method for comfort noise generation mode selection
AssigneeFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
InventorsEmmanuel Ravelli, Martin Dietz, Wolfgang Jaegers, Christian Neukam, Stefan Reuschl
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Abstract
An apparatus for encoding audio information is provided. The apparatus for encoding audio information includes a selector for selecting a comfort noise generation mode from two or more comfort noise generation modes depending on a background noise characteristic of an audio input signal, and an encoding unit for encoding the audio information, wherein the audio information includes mode information indicating the selected comfort noise generation mode.
Claims17
An apparatus for encoding audio information, comprising:
- a selector for selecting a comfort noise generation mode from two or more comfort noise generation modes depending on a background noise characteristic of an audio input signal, wherein a first one of the two or more comfort noise generation modes is a frequency-domain comfort noise generation mode, and
- an encoding unit for encoding the audio information, wherein the audio information comprises mode information indicating the selected comfort noise generation mode.
An apparatus for generating an audio output signal based on received encoded audio information, comprising:
- a decoding unit for decoding encoded audio information to acquire mode information being encoded within the encoded audio information, wherein the mode information indicates an indicated comfort noise generation mode of two or more comfort noise generation modes, wherein a first one of the two or more comfort noise generation modes is a frequency-domain comfort noise generation mode, and
- a signal processor for generating the audio output signal by generating, depending on the indicated comfort noise generation mode, comfort noise.
A method for encoding audio information, comprising:
- selecting a comfort noise generation mode from two or more comfort noise generation modes depending on a background noise characteristic of an audio input signal, wherein a first one of the two or more comfort noise generation modes is a frequency-domain comfort noise generation mode, and
- encoding the audio information, wherein the audio information comprises mode information indicating the selected comfort noise generation mode.
A method for generating an audio output signal based on received encoded audio information, comprising:
- decoding encoded audio information to acquire mode information being encoded within the encoded audio information, wherein the mode information indicates an indicated comfort noise generation mode of two or more comfort noise generation modes, wherein a first one of the two or more comfort noise generation modes is a frequency-domain comfort noise generation mode, and
- generating the audio output signal by generating, depending on the indicated comfort noise generation mode, comfort noise.
A non-transitory digital storage medium having a computer program stored thereon to perform the method for encoding audio information, the method comprising:
- selecting a comfort noise generation mode from two or more comfort noise generation modes depending on a background noise characteristic of an audio input signal, wherein a first one of the two or more comfort noise generation modes is a frequency-domain comfort noise generation mode, and
- encoding the audio information, wherein the audio information comprises mode information indicating the selected comfort noise generation mode,
- when said computer program is run by a computer.
A non-transitory digital storage medium having a computer program stored thereon to perform the method for generating an audio output signal based on received encoded audio information, the method comprising:
- decoding encoded audio information to acquire mode information being encoded within the encoded audio information, wherein the mode information indicates an indicated comfort noise generation mode of two or more comfort noise generation modes, wherein a first one of the two or more comfort noise generation modes is a frequency-domain comfort noise generation mode, and
- generating the audio output signal by generating, depending on the indicated comfort noise generation mode, comfort noise,
- when said computer program is run by a computer.
Dependencies are inferred from the claim text.