Apparatus and method with enhancement of sound quality
US9596542B2 · kind B2 · utility
1Cited by
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31Claims
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Key dates
| Filing date | Apr 4, 2013 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | Jan 20, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/03
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audio processing apparatus and method are provided. The audio processing apparatus includes an envelope detector to detect an envelope of an input signal with respect to a low frequency band, and a signal restorer to restore the input signal including a high frequency band by performing frequency folding of frequency sub-band according the envelope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.