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Method, device and audio signal payload for forming an audio signal payload

A payload and audio signal technology, applied in speech analysis, instruments, etc., can solve problems such as consumption of transmission bandwidth

Active Publication Date: 2019-12-27
NOKIA TECH OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typically, this in-band signal can be in the form of mode bits, which require part of the audio payload format, thus consuming transmission bandwidth

Method used

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  • Method, device and audio signal payload for forming an audio signal payload
  • Method, device and audio signal payload for forming an audio signal payload
  • Method, device and audio signal payload for forming an audio signal payload

Examples

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Embodiment Construction

[0043] Possible payload formats for mono, stereo and multi-channel speech and audio codecs, including multi-mode audio codecs, are described in more detail below.

[0044] By informing the corresponding multi-mode audio codec of the encoding mode, the multi-mode audio codec is able to switch seamlessly between one mode of operation and another. The coding mode can be signaled to the codec by an in-band signal bit in the audio payload.

[0045] The format of the audio payload determines how the corresponding multimode audio codec parses the encoded audio information for subsequent decoding by the multimode audio codec.

[0046] Flexibility in the format of the audio payload may be required to accommodate additional but unspecified audio coding schemes in existing frameworks. Typically, this is achieved by accounting for the extra in-band signaling bits when specifying the audio payload format. However, this can lead to wasted transmission bandwidth, especially if the extra si...

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PUM

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Abstract

The invention discloses a method for forming an audio payload frame, wherein the audio payload frame includes: a coded audio data frame, with a first flag in front of the coded audio data frame, wherein the first a flag bit is set to a first value, and wherein said first value represents a type of encoded audio data in said frame of encoded audio data; an extended frame of encoded audio data; and a second flag bit preceding said first flag bit , wherein the second flag bit is set to a second value; and wherein the second value represents a type of encoded audio data different from the type of encoded audio data in the frame of encoded audio data.

Description

technical field [0001] The present application relates to a payload format for a multi-channel or stereo audio signal encoder, particularly but not exclusively to a payload format for a multi-channel or stereo audio signal encoder for use in a portable device. Background technique [0002] For example, audio signals such as speech or music are encoded to enable efficient transmission or storage of the audio signals. [0003] Audio encoders and decoders (also known as codecs) are used to represent audio-based signals such as music or ambient sounds (which in speech coding terminology may be referred to as background noise). [0004] Audio codecs can also be configured to run at varying bitrates. At lower bitrates, audio codecs can be optimized to process speech signals at an encoding rate equal to that of pure speech codecs. At higher bit rates, audio codecs can encode arbitrary signals, including music, background noise, and speech, with high quality and performance. Vari...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/16G10L19/18G10L19/008
CPCG10L19/008G10L19/167G10L19/18G10L19/24
Inventor L·拉克索宁A·拉莫A·瓦西拉凯
Owner NOKIA TECH OY