Invention Application
US20120177223A1 MULTI-INPUT NOISE SUPPRESSION DEVICE, MULTI-INPUT NOISE SUPPRESSION METHOD, PROGRAM, AND INTEGRATED CIRCUIT
有权
多输入噪声抑制装置，多输入噪声抑制方法，程序和集成电路
- Patent Title: MULTI-INPUT NOISE SUPPRESSION DEVICE, MULTI-INPUT NOISE SUPPRESSION METHOD, PROGRAM, AND INTEGRATED CIRCUIT
- Patent Title (中): 多输入噪声抑制装置，多输入噪声抑制方法，程序和集成电路
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Application No.: US13497299Application Date: 2011-07-26
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Publication No.: US20120177223A1Publication Date: 2012-07-12
- Inventor: Takeo Kanamori , Shinichi Yuzuriha , Yutaka Banba , Yasuhiro Terada
- Applicant: Takeo Kanamori , Shinichi Yuzuriha , Yutaka Banba , Yasuhiro Terada
- Priority: JP2010-167289 20100726
- International Application: PCT/JP2011/004219 WO 20110726
- Main IPC: H04B15/00
- IPC: H04B15/00
Abstract:
A power spectrum estimation unit (200) obtains an estimated sound power spectrum Ps(ω), based on a power spectrum P1(ω) and on a first calculated value obtained by at least multiplying a power spectrum P2(ω) by a weight coefficient A2(ω). A coefficient update unit (300) updates the weight coefficient A2(ω) and a weight coefficient A1(ω) so that a second calculated value approximates to the power spectrum P1(ω). The second calculated value is obtained by adding at least two values obtained by multiplying the power spectrum P2(ω) and the estimated target sound power spectrum Ps(ω) by the weight coefficient A2(ω) and the weight coefficient A1(ω), respectively.
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