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    • 7. 发明授权
    • Signal correction apparatus equipped with correction function estimation unit
    • 信号校正装置配备有校正功能估计单元
    • US08842843B2
    • 2014-09-23
    • US13129646
    • 2009-09-03
    • Tadashi EmoriMasanori Tsujikawa
    • Tadashi EmoriMasanori Tsujikawa
    • H04R29/00H04R3/00G10L21/02
    • H04R3/005G10L21/02
    • A signal correction apparatus receives an input audio signal (serving as a first sound reception means). The signal correction apparatus computes, at every frequency, first power that indicates magnitude of sound represented by the input audio signal (serving as a first power computation means). The signal correction apparatus estimates a correction function that is a continuous function defining a relation between each frequency and a correction coefficient used to approximate the first power computed at that frequency to the reference power predetermined for that frequency (serving as a correction function estimation means). The signal correction apparatus multiplies the computed first power by the correction coefficient acquired in accordance with the relation defined by the estimated correction function so as to correct the first power at every frequency (serving as a power correcting means).
    • 信号校正装置接收输入音频信号(作为第一声音接收装置)。 信号校正装置在每个频率处计算指示由输入音频信号(用作第一功率计算装置)表示的声音的大小的第一功率。 信号校正装置估计校正函数,该校正函数是定义每个频率与用于将在该频率处计算出的第一功率近似的校正系数之间的关系的连续函数,作为为该频率预定的参考功率(用作校正函数估计装置) 。 信号校正装置将计算出的第一功率乘以根据由估计校正函数定义的关系获取的校正系数,以校正每个频率的第一功率(用作功率校正装置)。
    • 8. 发明申请
    • SIGNAL CORRECTION APPARATUS
    • 信号校正装置
    • US20110225439A1
    • 2011-09-15
    • US13129646
    • 2009-09-03
    • Tadashi EmoriMasanori Tsujikawa
    • Tadashi EmoriMasanori Tsujikawa
    • G06F1/26
    • H04R3/005G10L21/02
    • A signal correction apparatus receives an input audio signal (serving as a first sound reception means). The signal correction apparatus computes, at every frequency, first power that indicates magnitude of sound represented by the input audio signal (serving as a first power computation means). The signal correction apparatus estimates a correction function that is a continuous function defining a relation between each frequency and a correction coefficient used to approximate the first power computed at that frequency to the reference power predetermined for that frequency (serving as a correction function estimation means). The signal correction apparatus multiplies the computed first power by the correction coefficient acquired in accordance with the relation defined by the estimated correction function so as to correct the first power at every frequency (serving as a power correcting means).
    • 信号校正装置接收输入音频信号(作为第一声音接收装置)。 信号校正装置在每个频率处计算指示由输入音频信号(用作第一功率计算装置)表示的声音的大小的第一功率。 信号校正装置估计校正函数,该校正函数是定义每个频率与用于将在该频率处计算出的第一功率近似的校正系数之间的关系的连续函数,作为为该频率预定的参考功率(用作校正函数估计装置) 。 信号校正装置将计算出的第一功率乘以根据由估计校正函数定义的关系获取的校正系数,以校正每个频率的第一功率(用作功率校正装置)。
    • 9. 发明授权
    • Device, method and program for voice detection and recording medium
    • 用于语音检测和记录介质的设备,方法和程序
    • US08589152B2
    • 2013-11-19
    • US12993134
    • 2009-05-26
    • Tadashi EmoriMasanori Tsujikawa
    • Tadashi EmoriMasanori Tsujikawa
    • G10L21/02G10L11/06
    • G10L25/78G10L25/18
    • To this end, a voice detection device includes a band-based power calculation unit that calculates a total of signal power values (sub-band power) of signals entered from the microphones from one preset frequency width (sub-band) to another. The voice detection device also includes a band-based noise estimation unit that estimates the sub-band based noise power, and a sub-band based SNR calculation unit. The sub-band based SNR calculation unit calculates a sub-band SNR from one sub-band to another to output the largest one of the sub-band SNRs as an SNR for a microphone of interest. The voice detection device further includes a voice/non-voice decision unit that determines the voice/non-voice using the SNR for the microphone of interest.
    • 为此,语音检测装置包括基于频带的功率计算单元,其计算从麦克风输入的信号从一个预设频率宽度(子带)到另一个的信号功率值(子带功率)的总和。 语音检测装置还包括估计基于子带的噪声功率的基于带的噪声估计单元和基于子带的SNR计算单元。 基于子带的SNR计算单元计算从一个子带到另一个子带的子带SNR,以将最大的一个子带SNR作为感兴趣的麦克风的SNR输出。 语音检测设备还包括语音/非语音决定单元,其使用感兴趣的麦克风的SNR来确定语音/非语音。
    • 10. 发明授权
    • Speech sound detection apparatus
    • 语音检测装置
    • US08856001B2
    • 2014-10-07
    • US13125493
    • 2009-09-03
    • Tadashi EmoriMasanori Tsujikawa
    • Tadashi EmoriMasanori Tsujikawa
    • G10L15/00
    • G10L25/78G10L2025/786
    • A speech sound detection apparatus receives an input audio signal (as a sound reception unit), and computes input power that indicates a magnitude of the sound represented by the audio signal (as an input power computation unit). The apparatus estimates a correction function that is a continuous function defining a relation between a certain frequency and a correction coefficient used to approximate the input power computed at that frequency to the reference power predetermined for that frequency (as a correction function estimation unit). The apparatus corrects the input power at every frequency, based upon the correction coefficient that is obtained in accordance with the relation defined by the estimated correction function (as an input power correcting unit). The apparatus further determines whether or not the sound represented by the received audio signal is speech sound, based upon the corrected input power (as a speech sound detection unit).
    • 语音检测装置接收输入音频信号(作为声音接收部),并计算表示由音频信号(作为输入功率计算部)表示的声音的大小的输入电力。 该装置估计校正函数,该校正函数是定义特定频率和用于将在该频率处计算的输入功率近似为对于该频率预定的参考功率(作为校正函数估计单元)的校正系数之间的关系的连续函数。 该装置基于根据由估计校正函数(作为输入功率校正单元)定义的关系获得的校​​正系数,校正每个频率的输入功率。 该装置还基于校正的输入功率(作为语音检测单元),确定由接收的音频信号表示的声音是否是语音。