音声信号処理装置、方法及びプログラム
    21.
    发明申请
    音声信号処理装置、方法及びプログラム 审中-公开
    音频信号处理设备,方法和程序

    公开(公告)号:WO2014054314A1

    公开(公告)日:2014-04-10

    申请号:PCT/JP2013/066401

    申请日:2013-06-13

    Inventor: 高橋 克之

    Abstract:  ボイススイッチを適切に稼動させて音質を向上できる音声信号処理装置を提供する。入力音声信号に遅延減算処理を施して、第1、第2の所定方位に死角を有する第1、第2の指向性信号を形成し、これら2つの指向性信号を用いてコヒーレンスを得る。そして、コヒーレンスと判定閾値とを比較して、入力音声信号が、目的方位から到来している目的音声の区間か、それ以外の非目的音声区間かを判定し、この判定結果に応じてゲインを設定し、ゲインを入力音声信号に乗算して非目的音声を減衰する。ここで、上記判定閾値を、妨害音声区間におけるコヒーレンスの平均値に基づいて制御する。

    Abstract translation: 提供了一种通过适当地操作语音切换来提高音频质量的音频信号处理装置。 对输入音频信号进行延迟减法处理,形成具有第一和第二规定取向的盲点的第一和第二定向信号,并且使用这两个方向信号获得相干性。 比较相干和确定阈值,无论输入音频信号是否是从目标方位到达的目标音频空间或者确定目标音频空间的非目标音频空间,根据确定结果设置增益 ,并且通过将增益乘以输入音频信号来衰减非目标音频。 基于干扰音频空间中的相干的平均值来控制确定阈值。

    音声会議装置および音声会議システム
    23.
    发明申请
    音声会議装置および音声会議システム 审中-公开
    音频电视设备和音频电话系统

    公开(公告)号:WO2008075653A1

    公开(公告)日:2008-06-26

    申请号:PCT/JP2007/074254

    申请日:2007-12-17

    Abstract:  会議音声に対する回帰音を除去して音声会議を円滑に進行できる音声会議装置および音声会議システムの提供を図る。音声会議装置1は、通信制御部12により、未使用のチャンネル(S1~S3)から音声信号を出力する前に、当該チャンネルから着信音を出力する。スピーカSP1~SP16は、各チャンネルに応じた所定の音源位置から着信音を放音する。マイクMIC1A~MIC16A,マイクMIC1B~MIC16Bは着信音の回帰音を含む収音音声信号を収音する。エコーキャンセル部20は、入力信号に基づいて擬似回帰音信号を生成し、収音音声信号から擬似回帰音信号を減算する。このような構成の音声会議装置を複数、相互に接続し音声会議システムを構成する。

    Abstract translation: 可以提供一种音频电话会议设备和音频电话会议系统,其能够通过消除会议音频的反馈声音来平滑地执行音频电话会议。 音频电话会议装置(1)包括在从信道输出音频信号之前输出来自未使用频道(S1至S3)的到达声音的通信控制单元(12)。 扬声器(SP1至SP16)从对应于每个通道的预定声源位置发出到达声音。 麦克风(MIC1A至MIC16A)和麦克风(MIC1B至MIC16B)收集包括到达声音的反馈声的收集音频信号。 回声消除单元(20)根据输入信号产生伪反馈声音信号,并从声音采集音频信号中减去伪反馈声音信号。 具有这种结构的多个音频电话会议设备被相互连接,以构成音频电话会议系统。

    HEADSET FOR SEPARATION OF SPEECH SIGNALS IN A NOISY ENVIRONMENT
    24.
    发明申请
    HEADSET FOR SEPARATION OF SPEECH SIGNALS IN A NOISY ENVIRONMENT 审中-公开
    用于在噪声环境中分离语音信号的耳机

    公开(公告)号:WO2006028587A2

    公开(公告)日:2006-03-16

    申请号:PCT/US2005026195

    申请日:2005-07-22

    Abstract: A headset is constructed to generate an acoustically distinct speech signal in a noisy acoustic environment. The headset positions a pair of spaced-apart microphones near a user's mouth. The microphones each receive the user s speech, and also receive acoustic environmental noise. The microphone signals, which have both a noise and information component, are received into a separation process. The separation process generates a speech signal that has a substantial reduced noise component. The speech signal is then processed for transmission. In one example, the transmission process includes sending the speech signal to a local control module using a Bluetooth radio.

    Abstract translation: 耳机被构造成在噪声声学环境中产生声学上不同的语音信号。 耳机将一对间隔开的麦克风放在用户口附近。 麦克风各自接收用户的语音,并且还接收声学环境噪声。 具有噪声和信息分量的麦克风信号被接收到分离过程中。 分离过程产生具有显着降低的噪声分量的语音信号。 然后处理语音信号进行传输。 在一个示例中,传输过程包括使用蓝牙无线电将语音信号发送到本地控制模块。

    METHOD AND APPARATUS FOR REMOVING NOISE FROM SPEECH SIGNALS
    26.
    发明申请
    METHOD AND APPARATUS FOR REMOVING NOISE FROM SPEECH SIGNALS 审中-公开
    从语音信号中消除噪声的方法和装置

    公开(公告)号:WO0207151A3

    公开(公告)日:2002-05-30

    申请号:PCT/US0122490

    申请日:2001-07-17

    Abstract: A method and system are provided for acoustic noise removal from human speech, wherein noise is removed without respect to noise type, amplitude, or orientation. The system includes microphones and a voice activity detection (VAD) data stream coupled among a processor. The microphones receive acoustic signals and the VAD produces a signal including a binary one when speech (voiced and unvoiced) is occurring and a binary zero in the absence of speech. The processor includes denoising algorithms that generate transfer functions. The transfer functions include a transfer function generated in response to a determination that voicing information is absent from the received acoustic signal during a specified time period. The transfer functions also include transfer functions generated in response to a determination that voicing information is present in the acoustic signal during a specified time period. At least one denoised acoustic data stream is generated using the transfer functions.

    Abstract translation: 提供了一种用于从人类语音去除声学噪声的方法和系统,其中除噪声类型,振幅或取向之外的噪声被去除。 该系统包括麦克风和耦合在处理器之间的语音活动检测(VAD)数据流。 麦克风接收声信号,并且当语音(有声和无声)出现时,VAD产生包括二进制的信号,并且在没有语音的情况下产生二进制零。 处理器包括产生传递函数的去噪算法。 传递函数包括响应于在指定时间段期间从接收到的声信号中不存在发声信息而产生的传递函数。 传递函数还包括响应于在指定时间段期间声音信息存在于声信号中的确定而产生的传递函数。 使用传递函数生成至少一个去噪的声学数据流。

    ATTENUATION OF BACKGROUND NOISE AND ECHOES IN AUDIO SIGNAL
    27.
    发明申请
    ATTENUATION OF BACKGROUND NOISE AND ECHOES IN AUDIO SIGNAL 审中-公开
    音频信号中背景噪声和声音的衰减

    公开(公告)号:WO02011125A1

    公开(公告)日:2002-02-07

    申请号:PCT/EP2001/008827

    申请日:2001-07-31

    Abstract: The subject of the invention is a signal cleaning procedure to isolate audio-frequency signals from the background noise. During the procedure, the signal to be cleaned is led into a filter bank and the signals separated into sub-bands will be sent into a transformer unit where a transformation will be performed upon them and this way a cleaned signal will be produced. It is a typical feature of the procedure that the instantaneous amplitude or the approximated value of the amplitude of the signal of each sub-band appearing at the output (1a) of the filter bank (1) is produced first in the transformer unit, then the instantaneous amplitude values produced this way will be averaged and the signals of the sub-bands will be weighted using the averages, and finally the weighted signals will be summed up and the cleaned signal will be determined this way.

    Abstract translation: 本发明的主题是将音频信号与背景噪声隔离的信号清洗程序。 在此过程中,要清除的信号被引导到滤波器组中,分离成子带的信号将被发送到变压器单元,在这个变压器单元中将进行变换,并以此方式产生清除的信号。 该过程的典型特征是在变压器单元中首先产生出现在滤波器组(1)的输出(1a)处的每个子带的信号的幅度的瞬时振幅或近似值,然后 以这种方式产生的瞬时幅度值将被平均,并且子带的信号将使用平均值进行加权,最后加权信号将被加总,并且清除的信号将以此方式确定。

    A METHOD OF IMPROVING THE INTELLIGIBILITY OF A SOUND SIGNAL, AND A DEVICE FOR REPRODUCING A SOUND SIGNAL
    28.
    发明申请
    A METHOD OF IMPROVING THE INTELLIGIBILITY OF A SOUND SIGNAL, AND A DEVICE FOR REPRODUCING A SOUND SIGNAL 审中-公开
    改善声音信号的智能的方法和用于再现声音信号的装置

    公开(公告)号:WO00075920A1

    公开(公告)日:2000-12-14

    申请号:PCT/SE2000/001100

    申请日:2000-05-29

    Abstract: In a method of improving the intelligibility of a first sound signal (S0) having a certain frequency spectrum, at least one additional sound signal (S1; S1, S2, ..., Sn) is generated comprising a transposition of the spectrum of the first signal in frequency. A combined signal (S+) is generated comprising the first signal (S0) as well as the at least one additional signal (S1; S1, S2, ..., Sn), and the combined signal is reproduced to a user. In this way the intelligibility of a sound signal is improved, while it is still possible to recognize the original sound of a speaker. The natural sound of the speaker is maintained due to the fact that the original sound signal is still contained in the resulting signal. Due to the additional signals the resulting signal will probably also contain speech information in a frequency band in which the person has a better perception.

    Abstract translation: 在提高具有一定频谱的第一声音信号(S0)的可懂度的方法中,产生至少一个附加声音信号(S1; S1,S2,...,Sn),包括: 第一个频率信号。 产生包括第一信号(S0)以及至少一个附加信号(S1; S1,S2,...,Sn)的组合信号(S +),并且将组合信号再现给用户。 以这种方式,改善了声音信号的可懂度,而仍然可以识别扬声器的原始声音。 扬声器的自然声音由于原始声音信号仍然包含在所产生的信号中而被维持。 由于附加信号,所得到的信号也可能包含在该人具有更好感知的频带中的语音信息。

    MULTI-MICROPHONE NOISE REDUCTION METHOD, APPARATUS AND TERMINAL DEVICE

    公开(公告)号:WO2019112468A1

    公开(公告)日:2019-06-13

    申请号:PCT/RU2017/000926

    申请日:2017-12-08

    CPC classification number: G10L21/0208 G10L21/0232 G10L2021/02161

    Abstract: Disclosed are a multi-microphone noise reduction method, an apparatus and a terminal device. The method includes: performing harmonic detection on a primary microphone signal to obtain frequency bin VAD flag information; controlling, according to the frequency bin VAD flag information, a Kalman filter to filter out a target speech signal from a secondary microphone signal, to obtain a secondary microphone noise signal; mapping the secondary microphone noise signal to the primary microphone signal through dynamic noise spectrum mapping, to obtain a primary microphone noise spectrum of the primary microphone signal; and calculating a noise reduction gain for the primary microphone signal according to at least the primary microphone noise spectrum of the primary microphone signal, and outputting a noise-reduced primary speech signal. The method has good robustness to location changes, various noises and application scenarios, and can be applied to both the handheld and hands-free modes.

    SUPPRESSING OR REDUCING EFFECTS OF WIND TURBULENCE
    30.
    发明申请
    SUPPRESSING OR REDUCING EFFECTS OF WIND TURBULENCE 审中-公开
    抑制或减少风力湍流的影响

    公开(公告)号:WO2017209838A1

    公开(公告)日:2017-12-07

    申请号:PCT/US2017/026526

    申请日:2017-04-07

    Abstract: A method of operation of a device includes receiving an input signal at the device. The input signal is generated using at least one microphone. The input signal includes a first signal component having a first amount of wind turbulence noise and a second signal component having a second amount of wind turbulence noise that is greater than the first amount of wind turbulence noise. The method further includes generating, based on the input signal, an output signal at the device. The output signal includes the first signal component and a third signal component that replaces the second signal component. A first frequency response of the input signal corresponds to a second frequency response of the output signal.

    Abstract translation: 设备的操作方法包括在设备处接收输入信号。 输入信号是使用至少一个麦克风生成的。 输入信号包括具有第一量的风湍流噪声的第一信号分量和具有大于第一量的风湍流噪声的第二量的风湍流噪声的第二信号分量。 该方法还包括基于输入信号在设备处生成输出信号。 输出信号包括第一信号分量和替换第二信号分量的第三信号分量。 输入信号的第一频率响应对应于输出信号的第二频率响应。

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