Invention Application
- Patent Title: ACOUSTIC CHARACTERISTIC CORRECTION COEFFICIENT CALCULATION APPARATUS, ACOUSTIC CHARACTERISTIC CORRECTION COEFFICIENT CALCULATION METHOD AND ACOUSTIC CHARACTERISTIC CORRECTION APPARATUS
- Patent Title (中): 声学特征校正系数计算装置,声学特性校正系数计算方法和声学特征校正装置
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Application No.: US13072196Application Date: 2011-03-25
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Publication No.: US20110274292A1Publication Date: 2011-11-10
- Inventor: Takashi Fukuda , Toshifumi Yamamoto , Yasuhiro Kanishima
- Applicant: Takashi Fukuda , Toshifumi Yamamoto , Yasuhiro Kanishima
- Applicant Address: JP Tokyo
- Assignee: KABUSHIKI KAISHA TOSHIBA
- Current Assignee: KABUSHIKI KAISHA TOSHIBA
- Current Assignee Address: JP Tokyo
- Priority: JP2010-107592 20100507
- Main IPC: H03G5/00
- IPC: H03G5/00

Abstract:
According to one embodiment, an acoustic characteristic correction coefficient calculation apparatus includes a frequency converter, a smoother, a frequency inverter, a cutter, and a calculator. The frequency converter is configured to convert a first impulse response corresponding to an input acoustic signal to a frequency domain. The smoother is configured to smooth amplitude and phase corresponding to the frequency domain converted by the frequency converter. The frequency inverter is configured to convert a frequency characteristic smoothed by the smoother to a time domain. The cutter is configured to cut out a second impulse response configured by the time domain obtained by converting the frequency characteristic by use of the frequency inverter by a preset tap number. The calculator is configured to calculate a correction coefficient used to correct an acoustic characteristic based on a result cut out by the cutter.
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