Apparatus and method of reducing noise and audio playing apparatus with non-magnet speaker
US10037765B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Oct 8, 2014 |
| Grant date | Jul 31, 2018 |
| Priority date | — |
| Expiry date | Jul 30, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02085
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An audio apparatus is provided. The audio apparatus includes an input configured to receive an audio signal containing noise; a period estimation unit configured to estimate a period of a noise pattern in the audio signal; a noise reducer configured to subtract and remove the noise pattern from the audio signal in a frequency domain by using the estimated period of the noise pattern; a noise updater configured to update the noise pattern according to a change in amplitude of the noise; and an output configured to output the audio signal obtained by removing the noise pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.