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1. 发明申请

US20080281589A1 Noise Suppression Device and Noise Suppression Method 审中-公开
标题翻译：噪声抑制装置和噪声抑制方法
公开(公告)号：US20080281589A1
公开(公告)日：2008-11-13
申请号：US11629381
申请日：2005-05-30
申请人： Youhua Wang , Takuya Kawashima , Koji Yoshida
发明人： Youhua Wang , Takuya Kawashima , Koji Yoshida
IPC分类号： G10L21/00
CPC分类号： G10L21/0208 , G10L21/0232 , G10L25/93
摘要： There is disclosed a noise suppression device capable of improving the noise suppression accuracy while reducing the audio distortion. In this device, a suppression unit suppresses a noise component from the audio power spectrum by using the detection result of the audio-existing band and the noise band in the audio power spectrum including the noise component. A pitch harmonic structure extracting unit (105) extracts a pitch harmonic power spectrum from the audio power spectrum. An audio-existence judgment unit (106) judges whether the audio power spectrum has audio existence according to the extracted pitch harmonic power spectrum. A pitch harmonic structure repair unit (108) repairs the extracted pitch harmonic power spectrum. A per-band audio/noise correction unit (109) corrects the detection result according to the pitch harmonic power spectrum selected according to the result of judgment by the audio-existence judgment unit (106) among the repaired pitch harmonic power spectrum and the extracted pitch harmonic power spectrum.
摘要翻译：公开了能够在降低音频失真的同时提高噪声抑制精度的噪声抑制装置。在该装置中，抑制单元通过使用包括噪声分量的音频功率谱中的音频存在频带和噪声频带的检测结果来抑制来自音频功率谱的噪声分量。音调谐波结构提取单元（105）从音频功率谱中提取音调谐波功率谱。音频存在判断单元（106）根据所提取的音调谐波功率谱来判断音频功率谱是否具有音频存在。音调谐波结构修复单元（108）修复所提取的音调谐波功率谱。每个频带音频/噪声校正单元（109）根据由修正的音调谐波功率谱中的音频存在判断单元（106）的判断结果选择的音调谐波功率谱和所提取的音频/噪声校正单元音调谐波功率谱。

2. 发明授权

US07286980B2 Speech processing apparatus and method for enhancing speech information and suppressing noise in spectral divisions of a speech signal 有权
标题翻译：用于增强语音信息并抑制语音信号的频谱分割中的噪声的语音处理装置和方法
公开(公告)号：US07286980B2
公开(公告)日：2007-10-23
申请号：US10111974
申请日：2001-08-31
申请人： Youhua Wang , Koji Yoshida
发明人： Youhua Wang , Koji Yoshida
IPC分类号： G10L19/14
CPC分类号： G10L19/26 , G10L25/78 , G10L2019/0011 , G10L2025/783
摘要： A speech processing apparatus and method may identify divisions of a signal spectrum as having a speech component or having no speech component. A comb filter is generated, based on a high-accuracy speech pitch obtained in the identified speech component divisions, for enhancing speech information in the speech component divisions. The comb filter is applied to the speech component divisions to suppress noise.
摘要翻译：语音处理装置和方法可以将信号频谱的划分识别为具有语音分量或不具有语音分量。基于在所识别的语音分量分割中获得的高精度语音间距来生成梳状滤波器，用于增强语音分量分割中的语音信息。梳状滤波器被应用于语音分量部分以抑制噪声。

3. 发明申请

US20070299658A1 Pitch Frequency Estimation Device, and Pich Frequency Estimation Method 审中-公开
标题翻译：间距频率估计装置和Pich频率估计方法
公开(公告)号：US20070299658A1
公开(公告)日：2007-12-27
申请号：US11632063
申请日：2005-06-23
申请人： Youhua Wang , Koji Yoshida
发明人： Youhua Wang , Koji Yoshida
IPC分类号： G10L11/04
CPC分类号： G10L25/90
摘要： A pitch frequency estimation device capable of estimating a pitch frequency precisely while reducing the computational complexity required for the estimation of the pitch frequency. In this device, a spectrum extraction unit (104) extracts a pitch-harmonized spectrum from a voice spectrum. A spectral average calculation unit (106) calculates the average of the power of the pitch-harmonized spectra extracted by the spectrum extraction unit (104), in a manner to individually correspond to a plurality of pitch frequency candidates. An estimation unit estimates the pitch frequency by using the average valve calculated by the spectral average calculation unit (106).
摘要翻译：一种音调频率估计装置，其能够精确地估计音调频率，同时降低对音调频率的估计所需的计算复杂度。在该装置中，频谱提取单元（104）从语音频谱中提取音调协调频谱。频谱平均计算单元（106）以与多个音调频率候选单独对应的方式来计算由频谱提取单元（104）提取的音调协调频谱的功率的平均值。估计单元通过使用由频谱平均计算单元（106）计算的平均阀估计音调频率。

4. 发明授权

US09054681B2 High speed duty cycle correction and double to single ended conversion circuit for PLL 有权
标题翻译： PLL的高速占空比校正和双端到单端转换电路
公开(公告)号：US09054681B2
公开(公告)日：2015-06-09
申请号：US13522745
申请日：2011-08-23
申请人： Youhua Wang , Junan Zhang , Dongbing Fu , Gangyi Hu , Jun Liu , Ruzhang Li , Guangbing Chen
发明人： Youhua Wang , Junan Zhang , Dongbing Fu , Gangyi Hu , Jun Liu , Ruzhang Li , Guangbing Chen
IPC分类号： H03K3/017 , H03K5/04 , H03K7/08 , H03K5/06 , H03K5/156
CPC分类号： H03K5/06 , H03K5/1565
摘要： The present invention pertains to a high speed duty cycle correction and double to single ended conversion circuit for PLL, comprising a reshaper stage, a single-edge detection circuit and a duty cycle restorer. The present invention introduces a way to convert double-ended output of PLL VCO into single-ended signal and adjust duty cycle of PLL VCO's output waveform by 50%, so that the circuit can output single ended clock signal with 50% duty cycle.
摘要翻译：本发明涉及一种用于PLL的高速占空比校正和双端到单端转换电路，包括一个整容级，单边缘检测电路和占空比恢复器。本发明引入了将PLL VCO的双端输出转换为单端信号并将PLL VCO的输出波形的占空比调整50％的方法，使得电路可以输出50％占空比的单端时钟信号。

5. 发明申请

US20080243496A1 Band Division Noise Suppressor and Band Division Noise Suppressing Method 审中-公开
标题翻译：带分频抑制器和频带分频抑制方法
公开(公告)号：US20080243496A1
公开(公告)日：2008-10-02
申请号：US10592749
申请日：2006-01-19
申请人： Youhua Wang
发明人： Youhua Wang
IPC分类号： G10L21/02
CPC分类号： G10L21/0208 , G10L25/18
摘要： A band division noise suppressor suppressing noise sufficiently with a small amount of processing and a little voice distortion. In the band division noise suppressor, a band dividing section (101) divides an input voice signal into a low band voice signal and a high band voice signal. The low band voice signal is subjected to decimate at a decimation section (102), subjected to noise suppression at a low band noise suppressing section (103), and then interpolated at an interpolation section (104). On the other hand, the high band voice signal is subjected to noise suppression at a high band noise suppressing section (105). A band combination section (106) composes the bands of low-band and high-band voice signals subjected to noise suppression and outputs a voice signal subjected to noise suppression over the entire band.
摘要翻译：带区噪声抑制器以少量的处理和少量语音失真充分抑制噪声。在频带分割噪声抑制器中，频带分割部（101）将输入的语音信号分割成低频语音信号和高频带语音信号。低频语音信号在抽取部分（102）进行抽取，在低频带噪声抑制部分（103）进行噪声抑制，然后在内插部分（104）进行内插。另一方面，高频声音信号在高频带噪声抑制部（105）进行噪声抑制。频带组合部分（106）构成经过噪声抑制的低频带和高频带语音信号的频带，并输出在整个频带上进行噪声抑制的语音信号。

6. 发明申请

US20130257499A1 HIGH SPEED DUTY CYCLE CORRECTION AND DOUBLE TO SINGLE ENDED CONVERSION CIRCUIT FOR PLL 有权
标题翻译：高速占空比校正和单端到PLL的单端转换电路
公开(公告)号：US20130257499A1
公开(公告)日：2013-10-03
申请号：US13522745
申请日：2011-08-23
申请人： Youhua Wang , Junan Zhang , Dongbing Fu , Gangyi Hu , Jun Liu , Ruzhang Li , Guangbing Chen
发明人： Youhua Wang , Junan Zhang , Dongbing Fu , Gangyi Hu , Jun Liu , Ruzhang Li , Guangbing Chen
IPC分类号： H03K5/06
CPC分类号： H03K5/06 , H03K5/1565
摘要： The present invention pertains to a high speed duty cycle correction and double to single ended conversion circuit for PLL, comprising a reshaper stage, a single-edge detection circuit and a duty cycle restorer. The present invention introduces a way to convert double-ended output of PLL VCO into single-ended signal and adjust duty cycle of PLL VCO's output waveform by 50%, so that the circuit can output single ended clock signal with 50% duty cycle.
摘要翻译：本发明涉及一种用于PLL的高速占空比校正和双端到单端转换电路，包括一个整容级，单边缘检测电路和占空比恢复器。本发明引入了将PLL VCO的双端输出转换为单端信号并将PLL VCO的输出波形的占空比调整50％的方法，使得电路可以输出50％占空比的单端时钟信号。

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