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51. 发明授权

US08913757B2 Enhanced spatialization system with satellite device 有权
标题翻译：具有卫星设备的增强型空间化系统
公开(公告)号：US08913757B2
公开(公告)日：2014-12-16
申请号：US13020949
申请日：2011-02-04
申请人： Phillip A. Hetherington , Mark Fallat
发明人： Phillip A. Hetherington , Mark Fallat
IPC分类号： H04R3/00 , H04R5/00 , H04S7/00 , H04N7/15 , H04M3/56
CPC分类号： H04S7/30 , H04M3/568 , H04N7/15 , H04R5/027 , H04R5/04 , H04S2400/11
摘要： A system enhances spatialization in which spatial information about sound sources at an originating location is represented in an audio signal. The system applies a phase difference analysis to the signals received from an array of spaced apart input devices or microphones to derive spatial or directional information about the relative directions of one or more satellite input devices or microphones. The signals from the satellite input devices or microphones are mixed by a function of their respective directions to generate a multichannel output signal. When processed by a remote or local system, the output signal provides a representation of the relative directions of the sound sources at the originating location at a receiving location.
摘要翻译：一种系统增强空间化，其中在始发位置处的声源的空间信息在音频信号中被表示。系统对从间隔开的输入装置或麦克风阵列接收的信号应用相位差分析，以导出关于一个或多个卫星输入装置或麦克风的相对方向的空间或方向信息。来自卫星输入装置或麦克风的信号通过其各自方向的功能混合，以产生多声道输出信号。当由远程或本地系统处理时，输出信号提供在接收位置处的始发位置处的声源的相对方向的表示。

52. 发明授权

US08326620B2 Robust downlink speech and noise detector 有权
标题翻译：稳健的下行语音和噪声检测器
公开(公告)号：US08326620B2
公开(公告)日：2012-12-04
申请号：US12428811
申请日：2009-04-23
申请人： Phillip A. Hetherington
发明人： Phillip A. Hetherington
IPC分类号： G10L15/20 , G10L21/02
CPC分类号： G10L25/84 , G10L25/78
摘要： A voice activity detection process is robust to a low and high signal-to-noise ratio speech and signal loss. A process divides an aural signal into one or more bands. Signal magnitudes of frequency components and the respective noise components are estimated. A noise adaptation rate modifies estimates of noise components based on differences between the signal to the estimated noise and signal variability.
摘要翻译：语音活动检测过程对低和高信噪比语音和信号丢失是鲁棒的。一个过程将听觉信号划分成一个或多个频带。估计频率分量的信号幅度和相应的噪声分量。噪声适应率根据信号与估计噪声和信号变异性之间的差异来修改噪声分量的估计。

53. 发明授权

US08326616B2 Dynamic noise reduction using linear model fitting 有权
标题翻译：使用线性模型拟合的动态降噪
公开(公告)号：US08326616B2
公开(公告)日：2012-12-04
申请号：US13217817
申请日：2011-08-25
申请人： Xueman Li , Rajeev Nongpiur , Phillip A. Hetherington
发明人： Xueman Li , Rajeev Nongpiur , Phillip A. Hetherington
IPC分类号： G10L21/02 , G10L15/20
CPC分类号： G10L21/0208
摘要： A speech enhancement system improves the speech quality and intelligibility of a speech signal. The system includes a time-to-frequency converter that converts segments of a speech signal into frequency bands. A signal detector measures the signal power of the frequency bands of each speech segment. A background noise estimator measures a background noise detected in the speech signal. A dynamic noise reduction controller dynamically models the background noise in the speech signal. The speech enhancement renders a speech signal perceptually pleasing to a listener by dynamically attenuating a portion of the noise that occurs in a portion of the spectrum of the speech signal.
摘要翻译：语音增强系统提高语音信号的语音质量和可懂度。该系统包括将语音信号的段转换成频带的时间 - 频率转换器。信号检测器测量每个语音段的频带的信号功率。背景噪声估计器测量在语音信号中检测到的背景噪声。动态降噪控制器动态建模语音信号中的背景噪声。语音增强通过动态地衰减出现在语音信号的频谱的一部分中的噪声的一部分，从而使聆听者感觉到愉悦的语音信号。

54. 发明授权

US08326614B2 Speech enhancement system 有权
标题翻译：语音增强系统
公开(公告)号：US08326614B2
公开(公告)日：2012-12-04
申请号：US12471072
申请日：2009-05-22
申请人： Shreyas Paranjpe , Phillip A. Hetherington , Xueman Li
发明人： Shreyas Paranjpe , Phillip A. Hetherington , Xueman Li
IPC分类号： G10L19/04
CPC分类号： G10L21/02 , G10L21/0208 , H04B1/66 , H04B3/04 , H04M3/002
摘要： A speech enhancement system improves speech conversion within an encoder and decoder. The system includes a first device that converts sound waves into operational signals. A second device selects a template that represents an expected signal model. The selected template models speech characteristics of the operational signals through a speech codebook that is further accessed in a communication channel.
摘要翻译：语音增强系统改进编码器和解码器内的语音转换。该系统包括将声波转换成操作信号的第一装置。第二个设备选择一个表示预期信号模型的模板。所选择的模板通过在通信信道中进一步访问的语音码本来模拟操作信号的语音特征。

55. 发明申请

US20120114129A1 MIXER WITH ADAPTIVE POST-FILTERING 有权
标题翻译：具有自适应后置滤波器的混频器
公开(公告)号：US20120114129A1
公开(公告)日：2012-05-10
申请号：US13331753
申请日：2011-12-20
申请人： Phillip A. Hetherington
发明人： Phillip A. Hetherington
IPC分类号： H04B3/20 , H04B15/00
CPC分类号： G10L21/0208 , G10K11/16 , G10L19/26 , G10L21/02 , G10L2021/02165 , H04R3/005
摘要： A noise reduction system includes multiple transducers that generate time domain signals. A transforming device transforms the time domain signals into frequency domain signals. A signal mixing device mixes the frequency domain signals according to a mixing ratio. Frequency domain signals are rotated in phase to generate phase rotated signals. A post-processing device attenuates portions of the output based on coherency levels of the signals.
摘要翻译：降噪系统包括产生时域信号的多个换能器。变换装置将时域信号变换成频域信号。信号混合装置根据混合比混合频域信号。频域信号相位旋转以产生相位旋转信号。后处理设备基于信号的相干性水平来衰减输出的部分。

56. 发明申请

US20120076315A1 Repetitive Transient Noise Removal 有权
标题翻译：重复瞬态噪声去除
公开(公告)号：US20120076315A1
公开(公告)日：2012-03-29
申请号：US13307615
申请日：2011-11-30
申请人： Phillip A. Hetherington , Shreyas A. Paranjpe
发明人： Phillip A. Hetherington , Shreyas A. Paranjpe
IPC分类号： G10K11/16
CPC分类号： G10L2021/02085
摘要： A system improves the perceptual quality of a speech signal by dampening undesired repetitive transient noises. The system includes a repetitive transient noise detector adapted to detect repetitive transient noise in a received signal. The received signal may include a harmonic and a noise spectrum. The system further includes a repetitive transient noise attenuator that substantially removes or dampens repetitive transient noises from the received signal. The method of dampening the repetitive transient noises includes modeling characteristics of repetitive transient noises; detecting characteristics in the received signal that correspond to the modeled characteristics of the repetitive transient noises; and substantially removing components of the repetitive transient noises from the received signal that correspond to some or all of the modeled characteristics of the repetitive transient noises.
摘要翻译：系统通过抑制不期望的重复瞬态噪声来提高语音信号的感知质量。该系统包括适用于检测接收信号中的重复瞬态噪声的重复瞬态噪声检测器。所接收的信号可以包括谐波和噪声谱。该系统还包括重复的瞬态噪声衰减器，其基本上从接收到的信号中去除或抑制重复的瞬态噪声。抑制重复瞬态噪声的方法包括重复瞬态噪声的建模特性; 检测对应于重复瞬态噪声的建模特性的接收信号中的特性; 并且基本上从对应于重复瞬态噪声的建模特征的某些或全部的接收信号中去除重复瞬态噪声的分量。

57. 发明申请

US20120035921A1 Dynamic Noise Reduction 有权
标题翻译：动态降噪
公开(公告)号：US20120035921A1
公开(公告)日：2012-02-09
申请号：US13217817
申请日：2011-08-25
申请人： Xueman Li , Rajeev Nongpiur , Phillip A. Hetherington
发明人： Xueman Li , Rajeev Nongpiur , Phillip A. Hetherington
IPC分类号： G10L21/02
CPC分类号： G10L21/0208
摘要： A speech enhancement system improves the speech quality and intelligibility of a speech signal. The system includes a time-to-frequency converter that converts segments of a speech signal into frequency bands. A signal detector measures the signal power of the frequency bands of each speech segment. A background noise estimator measures a background noise detected in the speech signal. A dynamic noise reduction controller dynamically models the background noise in the speech signal. The speech enhancement renders a speech signal perceptually pleasing to a listener by dynamically attenuating a portion of the noise that occurs in a portion of the spectrum of the speech signal.
摘要翻译：语音增强系统提高语音信号的语音质量和可懂度。该系统包括将语音信号的段转换成频带的时间 - 频率转换器。信号检测器测量每个语音段的频带的信号功率。背景噪声估计器测量在语音信号中检测到的背景噪声。动态降噪控制器动态建模语音信号中的背景噪声。语音增强通过动态地衰减出现在语音信号的频谱的一部分中的噪声的一部分，从而使聆听者感觉到愉悦的语音信号。

58. 发明申请

US20120020496A1 Fast Acoustic Cancellation 有权
标题翻译：快速声学消除
公开(公告)号：US20120020496A1
公开(公告)日：2012-01-26
申请号：US13250005
申请日：2011-09-30
申请人： Phillip A. Hetherington , Shreyas A. Paranjpe
发明人： Phillip A. Hetherington , Shreyas A. Paranjpe
IPC分类号： H03G5/00
CPC分类号： H04M9/082 , G10L2021/02082
摘要： A speech enhancement system improves the perceptual quality of an aural signal. A receiver detects and receives an unvoiced signal, a fully voiced signal, or a mixed voice remote signal. A coherence processor identifies the similarities or differences between a local signal and the remote signal. A cancellation processor or controller dampens reflected signals that may be part of the local signal.
摘要翻译：语音增强系统提高听觉信号的感知质量。接收机检测并接收清音信号，完全浊音信号或混合语音远程信号。相干处理器识别本地信号和远程信号之间的相似性或差异。取消处理器或控制器抑制可能是本地信号的一部分的反射信号。

59. 发明授权

US08073689B2 Repetitive transient noise removal 有权
标题翻译：重复瞬态噪声消除
公开(公告)号：US08073689B2
公开(公告)日：2011-12-06
申请号：US11331806
申请日：2006-01-13
申请人： Phillip A. Hetherington , Shreyas A. Paranjpe
发明人： Phillip A. Hetherington , Shreyas A. Paranjpe
IPC分类号： G10L15/20 , G10L21/02
CPC分类号： G10L21/0208 , G10L21/0232 , G10L2021/02085
摘要： A system improves the perceptual quality of a speech signal by dampening undesired repetitive transient noises. The system includes a repetitive transient noise detector adapted to detect repetitive transient noise in a received signal. The received signal may include a harmonic and a noise spectrum. The system further includes a repetitive transient noise attenuator that substantially removes or dampens repetitive transient noises from the received signal. The method of dampening the repetitive transient noises includes modeling characteristics of repetitive transient noises; detecting characteristics in the received signal that correspond to the modeled characteristics of the repetitive transient noises; and substantially removing components of the repetitive transient noises from the received signal that correspond to some or all of the modeled characteristics of the repetitive transient noises.
摘要翻译：系统通过抑制不期望的重复瞬态噪声来提高语音信号的感知质量。该系统包括适用于检测接收信号中的重复瞬态噪声的重复瞬态噪声检测器。所接收的信号可以包括谐波和噪声谱。该系统还包括重复的瞬态噪声衰减器，其基本上从接收到的信号中去除或抑制重复的瞬态噪声。抑制重复瞬态噪声的方法包括重复瞬态噪声的建模特性; 检测对应于重复瞬态噪声的建模特性的接收信号中的特性; 并且基本上从对应于重复瞬态噪声的建模特征的某些或全部的接收信号中去除重复瞬态噪声的分量。

60. 发明申请

US20110282660A1 System for Suppressing Rain Noise 有权
标题翻译：抑制雨声的系统
公开(公告)号：US20110282660A1
公开(公告)日：2011-11-17
申请号：US13111274
申请日：2011-05-19
申请人： Phillip A. Hetherington , Adrian R. Groves
发明人： Phillip A. Hetherington , Adrian R. Groves
IPC分类号： G10L21/02
CPC分类号： G10L21/0208 , G10L21/0232
摘要： A voice enhancement logic improves the perceptual quality of a processed signal. The voice enhancement system includes a noise detector and a noise attenuator. The noise detector detects and models the noise associated with rain. The noise attenuator dampens or reduces the rain noise from a signal to improve the intelligibility of an unvoiced, a fully voiced, or a mixed voice segment.
摘要翻译：语音增强逻辑提高了处理信号的感知质量。语音增强系统包括噪声检测器和噪声衰减器。噪声检测器检测并模拟与雨相关的噪声。噪声衰减器抑制或降低来自信号的雨噪声，以提高无声，完全浊音或混合声音段的清晰度。

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