Audio signal processing method
US-9214190-B2 · Dec 15, 2015 · US
Time warp activation signal provider, audio signal encoder, method for providing a time warp activation signal, method for encoding an audio signal and computer programs
US9502049B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9502049-B2 |
| Application number | US-201414538751-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 11, 2014 |
| Priority date | Jul 11, 2008 |
| Publication date | Nov 22, 2016 |
| Grant date | Nov 22, 2016 |
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Abstract
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An audio encoder has a window function controller, a windower, a time warper with a final quality check functionality, a time/frequency converter, a TNS stage or a quantizer encoder, the window function controller, the time warper, the TNS stage or an additional noise filling analyzer are controlled by signal analysis results obtained by a time warp analyzer or a signal classifier. Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.
First claim
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The invention claimed is: 1. Audio encoder for encoding an audio signal, comprising: a time warper for warping an audio signal using a variable time warping characteristic; a time/frequency converter for converting a time warped audio signal into a spectral representation comprising a number of spectral coefficients; and a processor for processing a variable number of spectral coefficients to generate an encoded audio signal, wherein the processor is configured for variably…
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Physics · mapped topic
- G10L21/04Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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- What does patent US9502049B2 cover?
- An audio encoder has a window function controller, a windower, a time warper with a final quality check functionality, a time/frequency converter, a TNS stage or a quantizer encoder, the window function controller, the time warper, the TNS stage or an additional noise filling analyzer are controlled by signal analysis results obtained by a time warp analyzer or a signal classifier. Furthermore,…
- Who is the assignee on this patent?
- Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E V
- What technology area does this patent fall under?
- Primary CPC classification G10L21/04. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 22 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).