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1. 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.

2. 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。

3. 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。

4. 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。

5. 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。

6. 发明授权

US08509450B2 Dynamic audibility enhancement 失效
标题翻译：动态听觉增强
公开(公告)号：US08509450B2
公开(公告)日：2013-08-13
申请号：US12861361
申请日：2010-08-23
申请人： Xuejing Sun
发明人： Xuejing Sun
IPC分类号： H04B3/20
CPC分类号： G10L21/0208 , G10L21/0232
摘要： A method of enhancing an audio signal includes the steps of: a) receiving a primary audio input signal, b) receiving a detected audio signal which comprises: A) an echo component derived from play-out of the primary audio input signal and B) a noise component, and c) estimating from the primary audio input signal and the detected audio signal: 1) a set of frequency-specific lower bound gains, such that each frequency-specific lower bound gain, when applied to a respective frequency of the primary audio input signal, would cause the noise component to just mask the echo component at that respective frequency and 2) a set of frequency-specific upper bound gains, such that each frequency-specific upper bound gain, when applied to a respective frequency of the primary audio input signal, would cause the echo component to just mask the noise component at that respective frequency; d) estimating a set of frequency-specific gains in such a way that each frequency-specific gain falls between the respective frequency-specific lower bound gain and respective frequency-specific upper bound gain; and e) applying the frequency-specific gains to the primary audio input signal.
摘要翻译：一种增强音频信号的方法包括以下步骤：a）接收主音频输入信号，b）接收检测到的音频信号，该音频信号包括：A）从主音频输入信号的播放导出的回波分量，以及B）噪声分量，以及c）从主要音频输入信号和检测到的音频信号估计：1）一组特定于频率的下限增益，使得每个特定于频率的下限增益应用于相应频率的下限增益主要音频输入信号将使得噪声分量仅在相应频率处掩蔽回波分量，以及2）一组频率特定的上限增益，使得每个频率特定的上限增益在应用于相应频率主音频输入信号将导致回波分量仅在相应频率处掩蔽噪声分量; d）以这样的方式估计一组频率特定增益，使得每个频率特定增益落在相应的频率特定下限增益和相应的频率特定上限增益之间; 以及e）将所述频率特定增益应用于所述主音频输入信号。

7. 发明申请

US20120045069A1 Dynamic Audibility Enhancement 失效
标题翻译：动态听觉增强
公开(公告)号：US20120045069A1
公开(公告)日：2012-02-23
申请号：US12861361
申请日：2010-08-23
申请人： Xuejing Sun
发明人： Xuejing Sun
IPC分类号： H04B3/20
CPC分类号： G10L21/0208 , G10L21/0232
摘要： A method of enhancing an audio signal includes the steps of: a) receiving a primary audio input signal, b) receiving a detected audio signal which comprises: A) an echo component derived from play-out of the primary audio input signal and B) a noise component, and c) estimating from the primary audio input signal and the detected audio signal: 1) a set of frequency-specific lower bound gains, such that each frequency-specific lower bound gain, when applied to a respective frequency of the primary audio input signal, would cause the noise component to just mask the echo component at that respective frequency and 2) a set of frequency-specific upper bound gains, such that, each frequency-specific upper bound gain, when applied to a respective frequency of the primary audio input signal, would cause the echo component to just mask the noise component, at that respective frequency; d) estimating a sat of frequency-specific gains in such a way that each frequency-specific gain falls between the respective frequency-specific lower bound gain and respective frequency-specific upper bound gain; and e) applying the frequency-specific gains to the primary audio input signal.
摘要翻译：一种增强音频信号的方法包括以下步骤：a）接收主音频输入信号，b）接收检测到的音频信号，该音频信号包括：A）从主音频输入信号的播放导出的回波分量，以及B）噪声分量，以及c）从主要音频输入信号和检测到的音频信号估计：1）一组特定于频率的下限增益，使得每个特定于频率的下限增益应用于相应频率的下限增益主要音频输入信号，将使得噪声分量仅在该相应频率处遮蔽回波分量，以及2）一组频率特定的上限增益，使得当施加到相应频率时，每个频率特定的上限增益的主要音频输入信号，将使得回波分量在相应的频率下仅掩盖噪声分量; d）以这样的方式估计频率特定增益的坐标，使得每个频率特定增益落在相应的频率特定下限增益和相应的频率特定上限增益之间; 以及e）将所述频率特定增益应用于所述主音频输入信号。

8. 发明申请

US20100125452A1 PITCH RANGE REFINEMENT 有权
公开(公告)号：US20100125452A1
公开(公告)日：2010-05-20
申请号：US12274061
申请日：2008-11-19
申请人： Xuejing Sun
发明人： Xuejing Sun
IPC分类号： G10L11/06 , G10L11/04
CPC分类号： G10L19/005 , G10L21/013 , G10L25/90 , G10L25/93
摘要： A method of refining a pitch period estimation of a signal, the method comprising: for each of a plurality of portions of the signal, scanning over a predefined range of time offsets to find an estimate of the pitch period of the portion within the predefined range of time offsets; identifying the average pitch period of the estimated pitch periods of the portions; determining a refined range of time offsets in dependence on the average pitch period, the refined range of time offsets being narrower than the predefined range of time offsets; and for a subsequent portion of the signal, scanning over the refined range of time offsets to find an estimate of the pitch period of the subsequent portion.
摘要翻译：一种改进信号的音调周期估计的方法，所述方法包括：对于信号的多个部分中的每一个，在预定义的时间偏移范围内扫描以找出预定范围内的部分的音调周期的估计的时间偏移; 识别部分的估计音调周期的平均音调周期; 根据平均音调周期来确定时间偏移的精细范围，时间偏移的精细范围比预定义的时间偏移范围窄; 并且对于信号的后续部分，在精确的时间偏移范围上扫描以找到随后部分的音调周期的估计。

9. 发明授权

US08600073B2 Wind noise suppression 失效
标题翻译：风噪声抑制
公开(公告)号：US08600073B2
公开(公告)日：2013-12-03
申请号：US12612505
申请日：2009-11-04
申请人： Xuejing Sun
发明人： Xuejing Sun
IPC分类号： G10L21/0208 , G10L15/20
CPC分类号： G10L21/0208
摘要： A method of suppressing wind noise in a voice signal determines an upper frequency limit that lies within the frequency spectrum of the voice signal, and for each of a plurality of frequency bands below the upper frequency limit, compares the average power of signal components in a first portion of the signal to the average power of signal components in a second portion of the signal, where the second portion is successive to the first portion. Signal components are identified in at least one of the plurality of frequency bands as containing impulsive wind noise in dependence on the comparison, and the identified signal components are attenuated.
摘要翻译：一种抑制语音信号中的风噪声的方法确定位于语音信号的频谱范围内的上限频率，并且对于低于上限频率的多个频带中的每一个频带，将频率范围内的信号分量的平均功率进行比较信号的第一部分与信号的第二部分中的信号分量的平均功率相关，其中第二部分连续到第一部分。信号分量在多个频带中的至少一个频带中被识别为依赖于比较的脉冲风噪声，并且所识别的信号分量被衰减。

10. 发明申请

US20130031152A1 METHODS AND APPARATUSES FOR CONVOLUTIVE BLIND SOURCE SEPARATION 有权
标题翻译：方法和装置用于线性盲源分离
公开(公告)号：US20130031152A1
公开(公告)日：2013-01-31
申请号：US13531118
申请日：2012-06-22
申请人： Xuejing Sun
发明人： Xuejing Sun
IPC分类号： G06F17/10
CPC分类号： G10L21/0272 , G06K9/6243 , G06K9/6244 , G06K9/6246 , H03H21/0027 , H03H2021/0036
摘要： Methods and apparatuses for convolutive blind source separation are described. Each of a plurality of input signals is transformed into frequency domain. Values of coefficients of unmixing filter corresponding to frequency bins are calculated by performing a gradient descent process on a cost function at least dependent on the coefficients of the unmixing filters. In each iteration of the gradient descent process, gradient terms for calculating the values of the same coefficient of the unmixing filters are adjusted to improve smoothness of gradient terms across the frequency bins. With respect to each of the frequency bins, source signals are estimated by filtering the transformed input signals through the respective unmixing filter configured with the calculated values of the coefficients. The estimated source signals on the respective frequency bins are transformed into time domain. The cost function is adapted to evaluate decorrelation between the estimated source signals.
摘要翻译：描述卷积盲源分离的方法和装置。将多个输入信号中的每一个变换为频域。至少依赖于混合滤波器的系数，通过对成本函数执行梯度下降处理来计算对应于频率仓的解混合滤波器的系数值。在梯度下降过程的每次迭代中，调整用于计算混合滤波器的相同系数的值的梯度项，以改善频率仓上的梯度项的平滑度。对于每个频率仓，通过经由通过系数的计算值配置的相应解混合滤波器对变换的输入信号进行滤波来估计源信号。各个频率仓上的估计的源信号被转换成时域。成本函数用于评估估计的源信号之间的去相关性。

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