Invention Grant
- Patent Title: Noise removal device and noise removal program
- Patent Title (中): 噪声去除装置和噪声消除程序
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Application No.: US13515895Application Date: 2010-11-17
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Publication No.: US09087518B2Publication Date: 2015-07-21
- Inventor: Tomohiro Narita
- Applicant: Tomohiro Narita
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2009-294828 20091225
- International Application: PCT/JP2010/006751 WO 20101117
- International Announcement: WO2011/077636 WO 20110630
- Main IPC: H04B15/00
- IPC: H04B15/00 ; G10L21/0208 ; G10L21/0232

Abstract:
A noise removal unit 102 executes noise removal and flooring processing of an input signal, and a density calculating unit 104 calculates, as to a point of interest on a time-frequency plane of the input signal passing through the noise removal, a density of non-flooring processing points from the presence or absence of the flooring processing of individual points around the point of interest. A partial suppression unit 105 replaces, when the density is less than a threshold, the power of the point of interest with its flooring value by considering it as a musical noise component, thereby suppressing the musical noise component.
Public/Granted literature
- US20120250883A1 NOISE REMOVAL DEVICE AND NOISE REMOVAL PROGRAM Public/Granted day:2012-10-04
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