Encoding device and encoding method, decoding device and decoding method, and program
US-2024055007-A1 · Feb 15, 2024 · US
Audio signal de-noising utilizing inter-frame correlation to restore missing spectral coefficients
US8965758B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8965758-B2 |
| Application number | US-201113248725-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 29, 2011 |
| Priority date | Mar 31, 2009 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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Abstract
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In the field of audio encoding/decoding technologies, a signal de-noising method is provided. The method includes: selecting, according to a degree of inter-frame correlation of a frame where a spectral coefficient to be adjusted resides, at least two spectral coefficients having high correlation with the spectral coefficient to be adjusted; performing weighting on the at least two selected spectral coefficients and the spectral coefficient to be adjusted to acquire a predicted value of the spectral coefficient to be adjusted; and adjusting a spectrum of a decoded signal by using the acquired predicted value, and outputting the adjusted decoded signal. A signal de-noising apparatus corresponding to the signal de-noising method and an audio decoding system using the signal de-noising apparatus are also provided.
First claim
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What is claimed is: 1. An audio signal de-noising method, comprising: selecting, according to inter-frame correlation of a frame in an audio signal where a spectral coefficient to be adjusted resides, at least two spectral coefficients having high correlation with the spectral coefficient to be adjusted; performing weighting on the at least two selected spectral coefficients and the spectral coefficient to be adjusted to acquire a predicted value of the spectral coefficient to b…
Assignees
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Classifications
- G10L19/24Primary
Physics · mapped topic
Physics · mapped topic
- G10L21/0205Primary
Physics · mapped topic
- G10L19/02Primary
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8965758B2 cover?
- In the field of audio encoding/decoding technologies, a signal de-noising method is provided. The method includes: selecting, according to a degree of inter-frame correlation of a frame where a spectral coefficient to be adjusted resides, at least two spectral coefficients having high correlation with the spectral coefficient to be adjusted; performing weighting on the at least two selected spe…
- Who is the assignee on this patent?
- Chen Longyin, Miao Lei, Hu Chen, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification G10L19/24. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 24 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).