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1. 发明申请

US20090254340A1 Noise Reduction 有权
标题翻译：降噪
公开(公告)号：US20090254340A1
公开(公告)日：2009-10-08
申请号：US12098570
申请日：2008-04-07
申请人： Xuejing Sun , Kuan-Chieh Yen , Rogerio Guedes Alves
发明人： Xuejing Sun , Kuan-Chieh Yen , Rogerio Guedes Alves
IPC分类号： G10L21/02
CPC分类号： G10L21/0208 , G10L25/78 , G10L25/90 , G10L2021/02163
摘要： A signal processor for estimating noise power in an audio signal includes a filter unit for generating a series of power values, each power value representing the power in the audio signal at a respective one of a plurality of frequency bands; a signal classification unit for analysing successive portions of the audio signal to assess whether each portion contains features characteristic of speech, and for classifying each portion in dependence on that analysis; a correction unit for estimating a minimum power value in a time-limited part of the audio signal, estimating the total noise power in that part of the audio signal and forming a correction factor dependent on the ratio of the minimum power value to the estimated total noise power, the correction unit being configured to estimate the minimum power value and the total noise power over only those portions of the time-limited part of the signal that are classified by the signal classification unit as being less characteristic of speech; and a noise estimation unit for estimating noise in the audio signal in dependence on the power values output by the filter unit and the correction factor formed by the correction unit.
摘要翻译：用于估计音频信号中的噪声功率的信号处理器包括用于产生一系列功率值的滤波器单元，每个功率值表示在多个频带中的相应一个频带中的音频信号中的功率; 信号分类单元，用于分析音频信号的连续部分，以评估每个部分是否包含语音特征，并且根据该分析对每个部分进行分类; 校正单元，用于估计音频信号的时间有限的部分中的最小功率值，估计该部分音频信号中的总噪声功率，并形成依赖于最小功率值与估计总和的比率的校正因子噪声功率，所述校正单元被配置为仅将所述信号分类单元分类的所述信号的所述时间有限部分的那些部分估计为较小的语音特性，估计所述最小功率值和所述总噪声功率; 以及噪声估计单元，用于根据由滤波器单元输出的功率值和由校正单元形成的校正因子来估计音频信号中的噪声。

2. 发明授权

US09142221B2 Noise reduction 有权
标题翻译：降噪
公开(公告)号：US09142221B2
公开(公告)日：2015-09-22
申请号：US12098570
申请日：2008-04-07
申请人： Xuejing Sun , Kuan-Chieh Yen , Rogerio Guedes Alves
发明人： Xuejing Sun , Kuan-Chieh Yen , Rogerio Guedes Alves
IPC分类号： G10L21/00 , G10L21/0216 , G10L21/0208 , G10L25/78 , G10L25/90
CPC分类号： G10L21/0208 , G10L25/78 , G10L25/90 , G10L2021/02163
摘要： A signal processor for estimating noise power in an audio signal includes a filter unit for generating a series of power values, each power value representing the power in the audio signal at a respective one of a plurality of frequency bands; a signal classification unit for analysing successive portions of the audio signal to assess whether each portion contains features characteristic of speech, and for classifying each portion in dependence on that analysis; a correction unit for estimating a minimum power value in a time-limited part of the audio signal, estimating the total noise power in that part of the audio signal and forming a correction factor dependent on the ratio of the minimum power value to the estimated total noise power, the correction unit being configured to estimate the minimum power value and the total noise power over only those portions of the time-limited part of the signal that are classified by the signal classification unit as being less characteristic of speech; and a noise estimation unit for estimating noise in the audio signal in dependence on the power values output by the filter unit and the correction factor formed by the correction unit.
摘要翻译：用于估计音频信号中的噪声功率的信号处理器包括用于产生一系列功率值的滤波器单元，每个功率值表示在多个频带中的相应一个频带中的音频信号中的功率; 信号分类单元，用于分析音频信号的连续部分，以评估每个部分是否包含语音特征，并且根据该分析对每个部分进行分类; 校正单元，用于估计音频信号的时间有限的部分中的最小功率值，估计该部分音频信号中的总噪声功率，并形成依赖于最小功率值与估计总和的比率的校正因子噪声功率，所述校正单元被配置为仅将所述信号分类单元分类的所述信号的所述时间有限部分的那些部分估计为较小的语音特性，估计所述最小功率值和所述总噪声功率; 以及噪声估计单元，用于根据由滤波器单元输出的功率值和由校正单元形成的校正因子来估计音频信号中的噪声。

3. 发明申请

US20100185441A1 Error Concealment 审中-公开
标题翻译：错误隐藏
公开(公告)号：US20100185441A1
公开(公告)日：2010-07-22
申请号：US12359036
申请日：2009-01-23
申请人： Xuejing Sun , Kuan-Chieh Yen
发明人： Xuejing Sun , Kuan-Chieh Yen
IPC分类号： G10L11/04
CPC分类号： G10L19/005 , G10L19/09
摘要： A method of updating a state of a decoder that decodes successive portions of a data stream representing an encoded voice signal in dependence on its state, the method comprising: at the decoder, decoding portions of the data stream to form decoded portions; storing the decoded portions; storing respective decoder states held by the decoder after forming each decoded portion; identifying that a portion of the data stream is degraded; estimating a pitch period of a stored decoded portion formed by decoding a portion of the data stream that precedes the degraded portion of the data stream; selecting a stored decoder state held by the decoder after decoding a portion of the data stream that precedes the degraded portion by a multiple of the estimated pitch period; and updating the state of the decoder with the selected decoder state.
摘要翻译：一种更新解码器的状态的方法，该解码器根据其状态对代表编码的语音信号的数据流的连续部分进行解码，该方法包括：在解码器处解码数据流的部分以形成解码部分; 存储解码部分; 在形成每个解码部分之后存储由解码器保持的各个解码器状态; 识别数据流的一部分被降级; 估计通过对数据流的劣化部分之前的数据流的一部分进行解码而形成的存储解码部分的音调周期; 在将所述劣化部分之前的所述数据流的一部分解码了所述估计的音调周期的倍数之后，选择由所述解码器保持的存储的解码器状态; 以及用所选择的解码器状态更新解码器的状态。

4. 发明授权

US08861745B2 Wind noise mitigation 有权
标题翻译：风噪声减轻
公开(公告)号：US08861745B2
公开(公告)日：2014-10-14
申请号：US12958029
申请日：2010-12-01
申请人： Kuan-Chieh Yen , Xuejing Sun , Jeffrey S. Chisholm
发明人： Kuan-Chieh Yen , Xuejing Sun , Jeffrey S. Chisholm
IPC分类号： H04R3/00 , H04R1/10
CPC分类号： H04R1/1083 , H04R3/005 , H04R2410/07 , H04R2420/07
摘要： A method of compensating for noise in a receiver having a first receiver unit and a second receiver unit, the method includes receiving a first transmission at the first receiver unit, the first transmission having a first signal component and a first noise component; receiving a second transmission at the second receive unit, the second transmission having a second signal component and a second noise component; determining whether the first noise component and the second noise component are incoherent and; only if it is determined that the first and second noise components are incoherent, processing the first and second transmissions in a first processing path, wherein the first processing path is configured to compensate for incoherent noise.
摘要翻译：一种补偿具有第一接收机单元和第二接收机单元的接收机中的噪声的方法，所述方法包括：在所述第一接收机单元接收第一传输，所述第一传输具有第一信号分量和第一噪声分量; 在所述第二接收单元处接收第二传输，所述第二传输具有第二信号分量和第二噪声分量; 确定第一噪声分量和第二噪声分量是否不相干; 只有当确定第一和第二噪声分量不相干时，在第一处理路径中处理第一和第二传输，其中第一处理路径被配置为补偿非相干噪声。

5. 发明授权

US08676573B2 Error concealment 有权
标题翻译：错误隐藏
公开(公告)号：US08676573B2
公开(公告)日：2014-03-18
申请号：US12414546
申请日：2009-03-30
申请人： Xuejing Sun , Kuan-Chieh Yen
发明人： Xuejing Sun , Kuan-Chieh Yen
IPC分类号： G10L21/00
CPC分类号： G10L19/005 , G10L25/90 , H04L1/0061 , H04L1/201
摘要： A method and apparatus for decoding portions of a data stream, wherein each portion comprises a plurality of samples. The method comprises storing portions of the data stream, decoding portions of the data stream to form decoded portions, and storing the decoded portions. The method further comprises identifying that a portion of the data stream is degraded. Following identifying that a portion of the data stream is degraded, the method generates a decoded portion for the degraded portion of the data stream using the stored decoded portions. The method also updates a state of a decoder by: estimating a pitch period of the degraded portion; selecting a group of successive samples of the stored portions of the data stream, the group of successive samples offset from the degraded portion in the data stream by a multiple of the estimated pitch period; and decoding the selected samples at the decoder.
摘要翻译：一种用于解码数据流的部分的方法和装置，其中每个部分包括多个采样。该方法包括存储数据流的部分，解码数据流的部分以形成解码部分，并存储解码部分。该方法还包括识别数据流的一部分被降级。在识别出数据流的一部分劣化之后，该方法使用存储的解码部分生成用于数据流的劣化部分的解码部分。该方法还通过以下步骤来更新解码器的状态：估计劣化部分的音调周期; 选择所述数据流的存储部分的一组连续样本，所述一组连续样本从所述数据流中的所述劣化部分偏移所述估计的音调周期的倍数; 并在解码器处解码所选样本。

6. 发明申请

US20120140946A1 Wind Noise Mitigation 有权
标题翻译：风噪声减轻
公开(公告)号：US20120140946A1
公开(公告)日：2012-06-07
申请号：US12958029
申请日：2010-12-01
申请人： Kuan-Chieh Yen , Xuejing Sun , Jeffrey S. Chisholm
发明人： Kuan-Chieh Yen , Xuejing Sun , Jeffrey S. Chisholm
IPC分类号： H04R3/00
CPC分类号： H04R1/1083 , H04R3/005 , H04R2410/07 , H04R2420/07
摘要： A method of compensating for noise in a receiver having a first receiver unit and a second receiver unit, the method includes receiving a first transmission at the first receiver unit, the first transmission having a first signal component and a first noise component; receiving a second transmission at the second receive unit, the second transmission having a second signal component and a second noise component; determining whether the first noise component and the second noise component are incoherent and; only if it is determined that the first and second noise components are incoherent, processing the first and second transmissions in a first processing path, wherein the first processing path is configured to compensate for incoherent noise.
摘要翻译：一种补偿具有第一接收机单元和第二接收机单元的接收机中的噪声的方法，所述方法包括：在所述第一接收机单元接收第一传输，所述第一传输具有第一信号分量和第一噪声分量; 在所述第二接收单元处接收第二传输，所述第二传输具有第二信号分量和第二噪声分量; 确定第一噪声分量和第二噪声分量是否不相干; 只有当确定第一和第二噪声分量不相干时，在第一处理路径中处理第一和第二传输，其中第一处理路径被配置为补偿非相干噪声。

7. 发明申请

US20100251051A1 ERROR CONCEALMENT 有权
标题翻译：错误承诺
公开(公告)号：US20100251051A1
公开(公告)日：2010-09-30
申请号：US12414546
申请日：2009-03-30
申请人： Xuejing Sun , Kuan-Chieh Yen
发明人： Xuejing Sun , Kuan-Chieh Yen
IPC分类号： H04L1/00 , H04J3/24
CPC分类号： G10L19/005 , G10L25/90 , H04L1/0061 , H04L1/201
摘要： A method and apparatus for decoding portions of a data stream, wherein each portion comprises a plurality of samples. The method comprises storing portions of the data stream, decoding portions of the data stream to form decoded portions, and storing the decoded portions. The method further comprises identifying that a portion of the data stream is degraded. Following identifying that a portion of the data stream is degraded, the method generates a decoded portion for the degraded portion of the data stream using the stored decoded portions. The method also updates a state of a decoder by: estimating a pitch period of the degraded portion; selecting a group of successive samples of the stored portions of the data stream, the group of successive samples offset from the degraded portion in the data stream by a multiple of the estimated pitch period; and decoding the selected samples at the decoder.
摘要翻译：一种用于解码数据流的部分的方法和装置，其中每个部分包括多个采样。该方法包括存储数据流的部分，解码数据流的部分以形成解码部分，并存储解码部分。该方法还包括识别数据流的一部分被降级。在识别出数据流的一部分劣化之后，该方法使用存储的解码部分生成用于数据流的劣化部分的解码部分。该方法还通过以下步骤来更新解码器的状态：估计劣化部分的音调周期; 选择所述数据流的存储部分的一组连续样本，所述一组连续样本从所述数据流中的所述劣化部分偏移所述估计的音调周期的倍数; 并在解码器处解码所选样本。

8. 发明授权

US09729965B2 Percentile filtering of noise reduction gains 有权
公开(公告)号：US09729965B2
公开(公告)日：2017-08-08
申请号：US14413692
申请日：2012-08-01
申请人： Xuejing Sun , Glenn N. Dickins
发明人： Xuejing Sun , Glenn N. Dickins
IPC分类号： G10L21/0208 , H04R3/00 , G10L21/0232 , G10L25/78 , G10L25/18
CPC分类号： H04R3/002 , G10L21/0232 , G10L25/18 , G10L25/78
摘要： A method of post-processing banded gains for applying to an audio signal, an apparatus to post-processed banded gains, and a tangible computer-readable storage medium comprising instructions that when executed carry out the method. The banded gains are determined by input processing one or more input audio signals. The method includes post-processing the banded gains to generate post-processed gains, generating a particular post-processed gain for a particular frequency band including percentile filtering using gain values from one or more previous frames of the one or more input audio signals and from gain values for frequency bands adjacent to the particular frequency band.

9. 发明授权

US09042571B2 Method and system for touch gesture detection in response to microphone output 有权
标题翻译：响应麦克风输出的触摸手势检测方法和系统
公开(公告)号：US09042571B2
公开(公告)日：2015-05-26
申请号：US13528681
申请日：2012-06-20
申请人： Glenn N. Dickins , David P. Doney , Andreas Ehret , Xuejing Sun
发明人： Glenn N. Dickins , David P. Doney , Andreas Ehret , Xuejing Sun
IPC分类号： H04R1/10 , G06F3/043 , H04R1/08 , H04R3/00 , G06F3/0488
CPC分类号： G06F3/043 , G06F3/04883 , H04R1/083 , H04R1/1041 , H04R1/1083 , H04R3/00
摘要： In some embodiments, a method for processing output of at least one microphone of a device (e.g., a headset) to identify at least one touch gesture exerted by a user on the device, including by distinguishing the gesture from input to the microphone other than a touch gesture intended by the user, and by distinguishing between a tap exerted by the user on the device and at least one dynamic gesture exerted by the user on the device, where the output of the at least one microphone is also indicative of ambient sound (e.g., voice utterences). Other embodiments are systems for detecting ambient sound (e.g., voice utterences) and touch gestures, each including a device including at least one microphone and a processor coupled and configured to process output of each microphone to identify at least one touch gesture exerted by a user on the device.
摘要翻译：在一些实施例中，一种用于处理设备（例如，耳机）的至少一个麦克风的输出以识别用户在设备上施加的至少一个触摸手势的方法，包括通过将手势与输入到麦克风不同于由用户打算的触摸手势，以及通过区分用户对设备施加的抽头以及由用户在设备上施加的至少一个动态手势，其中至少一个麦克风的输出也指示环境声音（例如语音发音）。其他实施例是用于检测环境声音（例如，语音发生）和触摸手势的系统，每个手段包括包括至少一个麦克风的设备和耦合并被配置为处理每个麦克风的输出的处理器，以识别由用户施加的至少一个触摸手势在设备上。

10. 发明授权

US08316267B2 Error concealment 有权
标题翻译：错误隐藏
公开(公告)号：US08316267B2
公开(公告)日：2012-11-20
申请号：US12434449
申请日：2009-05-01
申请人： Xuejing Sun , Sameer Gadre , Scott Plude
发明人： Xuejing Sun , Sameer Gadre , Scott Plude
IPC分类号： H04L1/00
CPC分类号： G06F11/08 , H04L1/0047 , H04L1/0072
摘要： A method and apparatus for selectively replacing damaged portions of a data stream. The method comprises analyzing the data stream to identify damaged portions therein; selecting a damaged portion for replacement; and replacing the selected damaged portion. The selected damaged portion is selected for replacement in dependence on a rate of replacement, the rate of replacement being that at which previous portions of the data stream have been replaced.
摘要翻译：一种用于选择性地替换数据流的损坏部分的方法和装置。该方法包括分析数据流以识别其中的损坏部分; 选择损坏部分进行更换; 并更换所选择的损坏部分。选择的损坏部分根据替换速率被选择用于替换，替换速率是数据流的先前部分被替换的速率。

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