公开(公告)号：US20140126745A1

公开(公告)日：2014-05-08

申请号：US13964037

申请日：2013-08-09

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Glenn N. Dickins ,  Timothy J. Neal ,  Mark S. Vinton

IPC: G10L19/012 ,  G10L19/03 ,  H04R3/00

CPC classification number: H04R3/002 ,  G10L21/0208 ,  G10L2021/02082 ,  G10L2021/02166 ,  H04R1/1083 ,  H04R1/406 ,  H04R3/005 ,  H04R3/02 ,  H04R2410/07 ,  H04R2430/03 ,  H04R2499/13

Abstract: A system, a method, logic embodied in a computer-readable medium, and a computer-readable medium comprising instructions that when executed carry out a method. The method processes: (a) a plurality of input signals, e.g., signals from a plurality of spatially separated microphones; and, for echo suppression, (b) one or more reference signals, e.g., signals from or to be rendered by one or more loudspeakers and that can cause echoes. The method processes the input signals and one or more reference signals to carry out in an integrated manner simultaneous noise suppression and out-of-location signal suppression, and in some versions, echo suppression.

Abstract translation: 包含在计算机可读介质中的系统，方法，逻辑以及包括指令的计算机可读介质，所述指令在执行时执行方法。 该方法处理：（a）多个输入信号，例如来自多个空间分离的麦克风的信号; 并且，对于回波抑制，（b）一个或多个参考信号，例如来自或要由一个或多个扬声器呈现并且可以引起回声的信号。 该方法处理输入信号和一个或多个参考信号以集成的方式执行同时噪声抑制和失调信号抑制，并且在一些版本中，进行回波抑制。

公开(公告)号：US20150051906A1

公开(公告)日：2015-02-19

申请号：US14386304

申请日：2013-03-21

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Glenn N. Dickins ,  Timothy J. Neal ,  Yen-Liang Shue

IPC: G10L25/78

CPC classification number: G10L25/78 ,  G10L19/173 ,  G10L2025/786

Abstract: One or more audio signals are processed using a multi-stage (hierarchical) voice and/or signal activity detector (VAD/SAD). A first stage is capable of reducing the workload bandwidth by employing an inexpensive VAD/SAD processor. One or more subsequent stages may further process the audio signals from the first stage. Other implementations may include a first stage that also performs continuity preservation between last blocks of audio signal and the first blocks of audio after it is detected that relevant audio signals are resumed. In yet other implementations, the first stage may extract features from audio signals when they are presented in their coded domain, and possibly with little or no decoding of the audio signal.

Abstract translation: 使用多级（分级）语音和/或信号活动检测器（VAD / SAD）处理一个或多个音频信号。 第一级能够通过采用便宜的VAD / SAD处理器来减少工作负载带宽。 一个或多个后续阶段可以进一步处理来自第一阶段的音频信号。 其他实现可以包括在检测到相关音频信号被恢复之后还执行音频信号的最后块和第一音频块之间的连续性保持的第一阶段。 在其他实施方式中，当第一级在其编码域中呈现时，可能从音频信号中提取特征，并且可能对音频信号的解码很少或不进行解码。

公开(公告)号：US09064503B2

公开(公告)日：2015-06-23

申请号：US14386304

申请日：2013-03-21

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Glenn N. Dickins ,  Timothy J. Neal ,  Yen-Liang Shue

IPC: G10L25/78 ,  G10L19/16

CPC classification number: G10L25/78 ,  G10L19/173 ,  G10L2025/786

Abstract: One or more audio signals are processed using a multi-stage (hierarchical) voice and/or signal activity detector (VAD/SAD). A first stage is capable of reducing the workload bandwidth by employing an inexpensive VAD/SAD processor. One or more subsequent stages may further process the audio signals from the first stage. Other implementations may include a first stage that also performs continuity preservation between last blocks of audio signal and the first blocks of audio after it is detected that relevant audio signals are resumed. In yet other implementations, the first stage may extract features from audio signals when they are presented in their coded domain, and possibly with little or no decoding of the audio signal.

Abstract translation: 使用多级（分级）语音和/或信号活动检测器（VAD / SAD）处理一个或多个音频信号。 第一级能够通过采用便宜的VAD / SAD处理器来减少工作负载带宽。 一个或多个后续阶段可以进一步处理来自第一阶段的音频信号。 其他实现可以包括在检测到相关音频信号被恢复之后还执行音频信号的最后块和第一音频块之间的连续性保持的第一阶段。 在其他实施方式中，当第一级在其编码域中呈现时，可能从音频信号中提取特征，并且可能对音频信号的解码很少或不进行解码。

公开(公告)号：US09173025B2

公开(公告)日：2015-10-27

申请号：US13964037

申请日：2013-08-09

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Glenn N. Dickins ,  Timothy J. Neal ,  Mark S. Vinton

IPC: H04B15/00 ,  H04R3/00 ,  G10L21/0208 ,  H04R1/10 ,  H04R3/02 ,  G10K11/16 ,  G10L21/0216 ,  H04R1/40

CPC classification number: H04R3/002 ,  G10L21/0208 ,  G10L2021/02082 ,  G10L2021/02166 ,  H04R1/1083 ,  H04R1/406 ,  H04R3/005 ,  H04R3/02 ,  H04R2410/07 ,  H04R2430/03 ,  H04R2499/13

Abstract: A system, a method, logic embodied in a computer-readable medium, and a computer-readable medium comprising instructions that when executed carry out a method. The method processes: (a) a plurality of input signals, e.g., signals from a plurality of spatially separated microphones; and, for echo suppression, (b) one or more reference signals, e.g., signals from or to be rendered by one or more loudspeakers and that can cause echoes. The method processes the input signals and one or more reference signals to carry out in an integrated manner simultaneous noise suppression and out-of-location signal suppression, and in some versions, echo suppression.

Abstract translation: 包含在计算机可读介质中的系统，方法，逻辑以及包括指令的计算机可读介质，所述指令在执行时执行方法。 该方法处理：（a）多个输入信号，例如来自多个空间分离的麦克风的信号; 并且，对于回波抑制，（b）一个或多个参考信号，例如来自或要由一个或多个扬声器呈现并且可以引起回声的信号。 该方法处理输入信号和一个或多个参考信号以集成的方式执行同时噪声抑制和失调信号抑制，并且在一些版本中，进行回波抑制。

公开(公告)号：US09374652B2

公开(公告)日：2016-06-21

申请号：US14387171

申请日：2013-03-21

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Timothy J. Neal ,  Glenn N. Dickins

IPC: H04R29/00

CPC classification number: H04R29/004 ,  H04M3/568 ,  H04R29/006 ,  H04R2201/405

Abstract: A plurality of acoustic sensors in a non-anechoic environment are calibrated with the aim of removing manufacturing tolerances and degradation over time but preserving position-dependent differences between the sensors, The sensors are excited by an acoustic stimulus which has either time-dependent characteristics or finite duration. The calibration is to be based on diffuse-field excitation only, in which indirect propagation (including single or multiple reflections) dominate over any direct-path excitation. For this purpose, the calibration process considers only a non-initial portion of sensor outputs and/or of an impulse response derived there-from. Based on these data, a frequency-dependent magnitude response function is estimated and compared with a target response function, from which a calibration function is derived.

Abstract translation: 在非消声环境中的多个声学传感器被校准，目的是消除制造公差和时间上的劣化，但是保持传感器之间的位置相关差异。传感器被具有时间依赖特性的声学刺激激发，或者 持续时间有限。 校准仅基于扩散场激励，其中间接传播（包括单次或多次反射）在任何直接路径激励上占主导地位。 为此，校准过程仅考虑传感器输出的非初始部分和/或从其导出的脉冲响应。 基于这些数据，估计频率依赖的幅度响应函数并与目标响应函数进行比较，从该目标响应函数导出校准函数。

公开(公告)号：US20150049583A1

公开(公告)日：2015-02-19

申请号：US14387171

申请日：2013-03-21

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Timothy J. Neal ,  Glenn N. Dickins

IPC: H04R29/00

CPC classification number: H04R29/004 ,  H04M3/568 ,  H04R29/006 ,  H04R2201/405

Abstract: A plurality of acoustic sensors in a non-anechoic environment are calibrated with the aim of removing manufacturing tolerances and degradation over time but preserving position-dependent differences between the sensors, The sensors are excited by an acoustic stimulus which has either time-dependent characteristics or finite duration. The calibration is to be based on diffuse-field excitation only, in which indirect propagation (including single or multiple reflections) dominate over any direct-path excitation. For this purpose, the calibration process considers only a non-initial portion of sensor outputs and/or of an impulse response derived there-from. Based on these data, a frequency-dependent magnitude response function is estimated and compared with a target response function, from which a calibration function is derived.

Abstract translation: 在非消声环境中的多个声学传感器被校准，目的是消除制造公差和时间上的劣化，但是保持传感器之间的位置相关差异。传感器被具有时间依赖特性的声学刺激激发，或者 持续时间有限。 校准仅基于扩散场激励，其中间接传播（包括单次或多次反射）在任何直接路径激励上占主导地位。 为此，校准过程仅考虑传感器输出的非初始部分和/或从其导出的脉冲响应。 基于这些数据，估计频率依赖的幅度响应函数并与目标响应函数进行比较，从该目标响应函数导出校准函数。