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1. 发明授权

US08865991B1 Portable music player 有权
标题翻译：便携式音乐播放器
公开(公告)号：US08865991B1
公开(公告)日：2014-10-21
申请号：US12316670
申请日：2008-12-15
申请人： Rogerio Guedes Alves , Kuan-Chieh Yen , Bryan Neilson
发明人： Rogerio Guedes Alves , Kuan-Chieh Yen , Bryan Neilson
IPC分类号： G10H1/36
CPC分类号： G10H1/42 , G10H2210/325 , G10H2210/385 , G10H2220/371
摘要： A portable music player for the playback of a digital audio file comprises a memory for storing a plurality of digital audio files; an audio output; a control for setting a desired change in pitch or tempo; and a digital signal processor configured to process a digital audio file and recover an audio signal therefrom, perceptibly alter one of the pitch and the tempo of the audio signal in response to the desired change in pitch or tempo without perceptibly altering the other of the pitch and tempo, and output the altered audio signal to the audio output.
摘要翻译：用于播放数字音频文件的便携式音乐播放器包括用于存储多个数字音频文件的存储器; 音频输出; 用于设定所需音调或速度变化的控制; 以及数字信号处理器，被配置为处理数字音频文件并从其中恢复音频信号，可以响应于所需的音调或节奏变化而明显地改变音频信号的音调和速度之一，而无需明显地改变音调的另一个和速度，并将改变的音频信号输出到音频输出。

2. 发明授权

US08489393B2 Speech intelligibility 失效
标题翻译：言语清晰度
公开(公告)号：US08489393B2
公开(公告)日：2013-07-16
申请号：US12623896
申请日：2009-11-23
申请人： Rogerio Guedes Alves , Kuan-chieh Yen , Michael Christopher Vartanian , Sameer Arun Gadre
发明人： Rogerio Guedes Alves , Kuan-chieh Yen , Michael Christopher Vartanian , Sameer Arun Gadre
IPC分类号： G10L19/00
CPC分类号： G10L21/0272 , G10L21/0364
摘要： The perceived quality of a narrowband speech signal truncated from a wideband speech signal is improved by generating in a third frequency band third speech components matching first speech components in a first frequency band of the narrowband signal, and generating in a fourth frequency band fourth speech components matching second speech components in a second frequency band of the narrowband signal. A first gain factor is applied to the third speech components to generate adjusted third speech components, and a second gain factor is applied to the fourth speech components to generate adjusted fourth speech components, the gain factors being selected such that the ratios of the average powers of the adjusted third and fourth speech components to the average power of the first speech components are predetermined values.
摘要翻译：通过在第三频带中产生与窄带信号的第一频带中的第一语音分量相匹配的第三语音分量并在第四频带中生成第四语音分量来改善从宽带语音信号中截取的窄带语音信号的感知质量在窄带信号的第二频带中匹配第二语音分量。将第一增益因子应用于第三语音分量以产生经调整的第三语音分量，并且将第二增益因子应用于第四语音分量以产生经调整的第四语音分量，所述增益因子被选择为使得平均功率被调整的第三和第四语音分量相对于第一语音分量的平均功率是预定值。

3. 发明授权

US08321215B2 Method and apparatus for improving intelligibility of audible speech represented by a speech signal 有权
标题翻译：用于提高由语音信号表示的可听话音的可懂度的方法和装置
公开(公告)号：US08321215B2
公开(公告)日：2012-11-27
申请号：US12623883
申请日：2009-11-23
申请人： Rogerio Guedes Alves , Kuan-chieh Yen , Michael Christopher Vartanian , Sameer Arun Gadre
发明人： Rogerio Guedes Alves , Kuan-chieh Yen , Michael Christopher Vartanian , Sameer Arun Gadre
IPC分类号： G10L11/04
CPC分类号： G10L21/0364
摘要： The perceived quality of a speech signal is improved by estimating the average power of first and second signal components and applying a first gain factor to the second signal components to generate adjusted second signal components. The first gain factor is selected such that on application of the first gain factor to the second signal components, the ratio of the average power of the first signal components to the average power of the adjusted second signal components would be a first predetermined value, the first predetermined value being such as to inhibit perceptual distortion of the improved speech signal.
摘要翻译：通过估计第一和第二信号分量的平均功率并将第一增益因子应用于第二信号分量来产生调整后的第二信号分量来提高语音信号的感知质量。选择第一增益因子，使得在将第一增益因子应用于第二信号分量时，第一信号分量的平均功率与调整的第二信号分量的平均功率的比值将是第一预定值，第一预定值是为了抑制改进的语音信号的感知失真。

4. 发明授权

US08306214B2 Method and system for clear signal capture 有权
公开(公告)号：US08306214B2
公开(公告)日：2012-11-06
申请号：US12195849
申请日：2008-08-21
申请人： Rogerio G. Alves , Kuan-Chieh Yen
发明人： Rogerio G. Alves , Kuan-Chieh Yen
IPC分类号： H04M9/08
CPC分类号： G10L21/0208 , H04M9/082
摘要： A method and system for clear signal capture comprehend several individual aspects that address specific problems in improved ways. In addition, the method and system also comprehend a hands-free implementation that is a practical solution to a very complex problem. Individual aspects comprehended related to echo and noise reduction, and divergence control.

5. 发明申请

US20110125494A1 Speech Intelligibility 审中-公开
标题翻译：语音清晰度
公开(公告)号：US20110125494A1
公开(公告)日：2011-05-26
申请号：US12623933
申请日：2009-11-23
申请人： Rogerio Guedes Alves , Kuan-Chieh Yen , Michael Christopher Vartanian , Sameer Arun Gadre
发明人： Rogerio Guedes Alves , Kuan-Chieh Yen , Michael Christopher Vartanian , Sameer Arun Gadre
IPC分类号： G10L21/02
CPC分类号： G10L21/038 , G10L21/02 , G10L21/0208 , G10L25/78
摘要： The perceived quality of a speech signal output from a user apparatus is improved by storing ambient noise profiles each indicating a model power distribution of a respective ambient noise type as a function of frequency; the ambient noise profile at the user apparatus is measured, the measured ambient noise profile is correlated with each of the stored ambient noise profiles, the stored ambient noise profile is selected with which the measured ambient noise profile is most highly correlated, and the speech signal is manipulated in dependence on which of the stored ambient noise profiles is selected, so as to form an improved speech signal.
摘要翻译：通过存储各自指示作为频率的函数的相应环境噪声类型的模型功率分布的环境噪声分布来改善从用户装置输出的语音信号的感知质量; 测量用户装置处的环境噪声分布，测量的环境噪声分布与每个存储的环境噪声分布相关联，选择存储的环境噪声分布，测量的环境噪声分布与其最高度相关，并且语音信号根据所选择的存储的环境噪声分布中的哪一个被操纵，以便形成改进的语音信号。

6. 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。

7. 发明申请

US20090225997A1 Acoustic Echo Cancellation 失效
标题翻译：声回波消除
公开(公告)号：US20090225997A1
公开(公告)日：2009-09-10
申请号：US12103728
申请日：2008-04-16
申请人： Rogerio Guedes Alves , Kuan-Chieh Yen , Bryan Neilson
发明人： Rogerio Guedes Alves , Kuan-Chieh Yen , Bryan Neilson
IPC分类号： H04B3/20
CPC分类号： H04M9/082 , H04M1/6066 , H04M2250/02 , H04W52/0245 , H04W52/0254 , Y02D70/144
摘要： An audio processing device for reducing the effect on a first signal of echo from a second signal, the device comprising: an echo reduction processor for processing the first signal to reduce echo in it, the echo reduction unit having: a first mode of operation for reducing echo of a first function from the first signal; and a second mode of operation for reducing echo of a second function from the first signal, the second function being more complex than the first function and the echo reduction processor being such as to consume more power in the second mode of operation than in the first mode of operation; and an echo reduction controller for controlling the echo reduction processor to operate in a selected one of the first mode of operation and the second mode of operation.
摘要翻译：一种音频处理装置，用于减少对来自第二信号的第一回波信号的影响，该装置包括：回波减少处理器，用于处理第一信号以减少其中的回波，回波减少单元具有：第一操作模式，从第一信号减少第一功能的回波; 以及用于从所述第一信号减少第二功能的回波的第二操作模式，所述第二功能比所述第一功能更复杂，并且回波减少处理器在第二操作模式中比在第一功能中消耗更多的功率操作模式; 以及回波降低控制器，用于控制回波减少处理器在所选择的第一操作模式和第二操作模式中操作。

8. 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。

9. 发明授权

US07773759B2 Dual microphone noise reduction for headset application 有权
标题翻译：双麦克风降噪耳机应用
公开(公告)号：US07773759B2
公开(公告)日：2010-08-10
申请号：US11502312
申请日：2006-08-10
申请人： Rogerio G. Alves , Kuan-Chieh Yen
发明人： Rogerio G. Alves , Kuan-Chieh Yen
IPC分类号： A61F11/06
CPC分类号： H04R3/02 , G10L21/02 , G10L2021/02165 , H04R1/1083 , H04R3/04 , H04R2410/05
摘要： Improved vocal signals are obtained in headsets and similar devices by including a microphone inside a chamber formed at least in part by the wearer's ear. This second microphone provides a reduced noise input signal. The reduced noise signal is corrected by input from another microphone, located outside the chamber. This correction can include echo cancellation, spectral shaping, frequency extension, and the like.
摘要翻译：通过在至少部分由佩戴者的耳朵形成的室内包括麦克风来在耳机和类似装置中获得改善的声音信号。该第二麦克风提供降低的噪声输入信号。减小的噪声信号通过位于室外的另一麦克风的输入来校正。该校正可以包括回波消除，频谱整形，频率扩展等。

10. 发明申请

US20080310643A1 METHOD AND SYSTEM FOR CLEAR SIGNAL CAPTURE 有权
公开(公告)号：US20080310643A1
公开(公告)日：2008-12-18
申请号：US12195831
申请日：2008-08-21
申请人： Rogerio G. Alves , Kuan-Chieh Yen
发明人： Rogerio G. Alves , Kuan-Chieh Yen
IPC分类号： H04B3/20 , H04M9/08
CPC分类号： G10L21/0208 , H04M9/082
摘要： A method and system for clear signal capture comprehend several individual aspects that address specific problems in improved ways. In addition, the method and system also comprehend a hands-free implementation that is a practical solution to a very complex problem. Individual aspects comprehended related to echo and noise reduction, and divergence control.

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