Method and device for processing audio signal
US-2015179180-A1 · Jun 25, 2015 · US
Encoder and encoding method for multi-channel signal, and decoder and decoding method for multi-channel signal
US11037578B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11037578-B2 |
| Application number | US-201816126964-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 10, 2018 |
| Priority date | Apr 10, 2013 |
| Publication date | Jun 15, 2021 |
| Grant date | Jun 15, 2021 |
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Abstract
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An encoder and an encoding method for a multi-channel signal, and a decoder and a decoding method for a multi-channel signal are disclosed. A multi-channel signal may be efficiently processed by consecutive downmixing or upmixing.
First claim
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The invention claimed is: 1. A decoding method comprising: outputting, by a core decoding unit, a mono signal of a core band corresponding to a low-frequency band from a bitstream; generating, by a first upmixinq unit, a stereo signal including a first channel signal and a second channel signal from the mono signal of the core band; and generating a four-channel signal, by a second upmixinq unit and a third upmixinq unit from the stereo signal including the first channel signal and the second channel signal, wherein the first channel signal of the stereo signal outputted from the first upmixinq unit is inputted into the second upmixinq unit, and the second channel signal of the stereo signal outputted from the first upmixinq unit is inputted into the third upmixinq unit, wherein the second upmixinq unit and the third upmixinq unit generate the four-channel signal using the first channel signal and the second channel signal. 2. The method of claim 1 , wherein the second upmixinq unit and the third upmixinq unit is disposed in parallel. 3. The method of claim 1 , wherein the core band is reconstructed to a high-frequency band by a SBR unit.
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in which the audio signals are in digital form, i.e. employing more than two discrete digital channels (data reduction aspects thereof based on psychoacoustics G10L19/02) · CPC title
- G10L19/008Primary
Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing · CPC title
Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback channels, e.g. 7.1 -> 5.1 (H04S2400/01 takes precedence) · CPC title
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- What does patent US11037578B2 cover?
- An encoder and an encoding method for a multi-channel signal, and a decoder and a decoding method for a multi-channel signal are disclosed. A multi-channel signal may be efficiently processed by consecutive downmixing or upmixing.
- Who is the assignee on this patent?
- Electronics & Telecommunications Res Inst
- What technology area does this patent fall under?
- Primary CPC classification G10L19/008. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jun 15 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).