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US-2024422466-A1 · Dec 19, 2024 · US
Noise suppression device
US8989403B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8989403-B2 |
| Application number | US-201013581544-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 9, 2010 |
| Priority date | Mar 9, 2010 |
| Publication date | Mar 24, 2015 |
| Grant date | Mar 24, 2015 |
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Abstract
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A band separating unit 5 carries out a band division of a plurality of power spectra into which an input signal is converted by a time-to-frequency converting unit 2 to combine power spectra into each subband, and a band representative component generating unit 6 defines a power spectrum having a maximum among the plurality of power spectra within each subband as a representative power spectrum. A noise suppression amount generating unit 7 calculates an amount of noise suppression for each subband by using the representative power spectrum and a noise spectrum, and a noise suppressing unit 9 suppresses the amplitudes of the power spectra according to the amount of noise suppression.
First claim
Opening claim text (preview).
The invention claimed is: 1. A noise suppression device including a time-to-frequency converting unit for converting an input signal on a time domain into power spectra and phase spectra which are signals on a frequency domain, a noise spectrum estimating unit for estimating a noise spectrum carried on said input signal, a noise suppression amount generating unit for calculating an amount of noise suppression by using said power spectra and said noise spectra, a noise suppressing u…
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Physics · mapped topic
Physics · mapped topic
- G10L21/0208Primary
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8989403B2 cover?
- A band separating unit 5 carries out a band division of a plurality of power spectra into which an input signal is converted by a time-to-frequency converting unit 2 to combine power spectra into each subband, and a band representative component generating unit 6 defines a power spectrum having a maximum among the plurality of power spectra within each subband as a representative power sp…
- Who is the assignee on this patent?
- Furuta Satoru, Tasaki Hirohisa, Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification G10L21/0208. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 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).