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Method and apparatus for processing an audio signal
US9305563B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9305563-B2 |
| Application number | US-201113522274-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 17, 2011 |
| Priority date | Jan 15, 2010 |
| Publication date | Apr 5, 2016 |
| Grant date | Apr 5, 2016 |
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Abstract
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The present invention relates to a method for processing an audio signal, comprising: a step of performing a frequency conversion process on an audio signal to obtain a plurality of frequency transform coefficients; a step of selecting either a general mode or a non-general mode, on the basis of a pulse ratio, for the frequency transform coefficients having a high frequency band from among the plurality of frequency transform coefficients; and a step of performing, if the non-general mode is selected, the following steps: extracting a predetermined number of pulses from the frequency transform coefficients having the high frequency band, and generating pulse information; generating an original noise signal from the frequency transform coefficients having the high frequency band, excluding the pulses; generating a reference noise signal using the frequency transform coefficient having a low frequency band from among the plurality of frequency transform coefficients; and generating noise position information and noise energy information using the original noise signal and the reference noise signal.
First claim
Opening claim text (preview).
The invention claimed is: 1. An audio signal processing method comprising: receiving an audio signal including a super wide band; obtaining a frequency-converted coefficient corresponding to the super wide band by performing frequency conversion with respect to the audio signal; determining that a current frame is a harmonic mode based on the frequency-converted coefficient corresponding to the super wide band; quantizing the frequency-converted coefficient corresponding to…
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- G10L19/038Primary
Physics · mapped topic
- G10L19/02Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G10L19/20Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US9305563B2 cover?
- The present invention relates to a method for processing an audio signal, comprising: a step of performing a frequency conversion process on an audio signal to obtain a plurality of frequency transform coefficients; a step of selecting either a general mode or a non-general mode, on the basis of a pulse ratio, for the frequency transform coefficients having a high frequency band from among the …
- Who is the assignee on this patent?
- Jeong Gyuhyeok, Kim Daehwan, Kang Ingyu, and 10 more
- What technology area does this patent fall under?
- Primary CPC classification G10L19/038. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 05 2016 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).