公开(公告)号：US20160268987A1

公开(公告)日：2016-09-15

申请号：US14643632

申请日：2015-03-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gaurav Talwar ,  Xufang Zhao ,  MD Foezur Rahman Chowdhury ,  Eli Tzirkel-Hancock

IPC: H03G3/00 ,  G06F3/16

CPC classification number: G06F3/165 ,  G06F3/162 ,  G10L15/28 ,  G10L19/022 ,  G10L21/04

Abstract: A system and method of adjusting digital audio sampling used with wideband audio includes: performing audio sampling on an analog audio signal at an initial sampling rate and an initial bit rate over a wideband audio frequency range; generating a digital audio signal based on the audio sampling; detecting a qualitative error rate between the analog audio signal and the digital audio signal; and decreasing the initial sampling rate, the initial bit rate, or both for sampling subsequent analog audio when the qualitative error is below a threshold.

Abstract translation: 调整与宽带音频一起使用的数字音频采样的系统和方法包括：以初始采样率对模拟音频信号进行音频采样，并在宽带音频频率范围内执行初始比特率; 基于音频采样生成数字音频信号; 检测模拟音频信号和数字音频信号之间的定性错误率; 并且当定性误差低于阈值时，降低初始采样率，初始比特率或两者用于对后续模拟音频进行采样。

公开(公告)号：US20150264480A1

公开(公告)日：2015-09-17

申请号：US14207929

申请日：2014-03-13

Applicant: GM Global Technology Operations LLC

Inventor： Gaurav Talwar ,  MD Foezur Rahman Chowdhury ,  Xufang Zhao

IPC: H04R3/00

CPC classification number: H04R3/005 ,  G10L15/20 ,  G10L21/0208 ,  G10L25/78 ,  H04R1/406 ,  H04R2201/401

Abstract: A method of processing audio received at a plurality of microphones in a vehicle includes receiving the audio as a first audio stream and second audio stream at respective first and second microphones that are positioned at different locations within the vehicle; creating a first digital time series and a second digital time series that represent the first audio stream and the second audio stream, respectively; calculating a delay that exists between the first audio stream and the second audio stream based on a cross-correlation of the first digital time series and the second digital time series; and processing the received audio using the calculated delay.

Abstract translation: 一种处理在车辆中的多个麦克风处接收的音频的方法包括：将音频作为位于车辆内不同位置的相应第一和第二麦克风处的第一音频流和第二音频流接收; 创建分别表示第一音频流和第二音频流的第一数字时间序列和第二数字时间序列; 基于所述第一数字时间序列和所述第二数字时间序列的互相关，计算存在于所述第一音频流和所述第二音频流之间的延迟; 以及使用所计算的延迟来处理接收到的音频。

公开(公告)号：US09706299B2

公开(公告)日：2017-07-11

申请号：US14207929

申请日：2014-03-13

Applicant: GM Global Technology Operations LLC

Inventor： Gaurav Talwar ,  MD Foezur Rahman Chowdhury ,  Xufang Zhao

IPC: H04R3/00 ,  H04R1/40 ,  G10L15/20 ,  G10L25/78 ,  G10L21/0208

CPC classification number: H04R3/005 ,  G10L15/20 ,  G10L21/0208 ,  G10L25/78 ,  H04R1/406 ,  H04R2201/401

Abstract: A method of processing audio received at a plurality of microphones in a vehicle includes receiving the audio as a first audio stream and second audio stream at respective first and second microphones that are positioned at different locations within the vehicle; creating a first digital time series and a second digital time series that represent the first audio stream and the second audio stream, respectively; calculating a delay that exists between the first audio stream and the second audio stream based on a cross-correlation of the first digital time series and the second digital time series; and processing the received audio using the calculated delay.

公开(公告)号：US09343057B1

公开(公告)日：2016-05-17

申请号：US14529743

申请日：2014-10-31

Applicant: GM Global Technology Operations LLC ,  General Motors LLC

Inventor： Bassam S. Shahmurad ,  MD Foezur Rahman Chowdhury

IPC: G10K11/16 ,  H03B29/00 ,  A61F11/06

CPC classification number: G10L21/0208 ,  G10L2021/02165 ,  G10L2021/02166

Abstract: A vehicle audio quality system for suppressing sudden vehicle cabin noise is provided, as well as methods of using the system. The system includes: an arrangement of heterogeneous microphones and a noise cancellation module (NCM). The microphone arrangement includes: a first microphone and a plurality of secondary microphones. The NCM includes a controller and a non-transitory computer-readable medium for storing application software executable by the controller to improve the quality of desired cabin audio received by the first microphone, the software performing the steps of: receiving a desired audio input from the first microphone; receiving supplemental audio input via the plurality of secondary microphones that includes a sudden cabin noise input; and applying a suppression procedure to the sudden cabin noise input.

Abstract translation: 提供了用于抑制突发车厢噪声的车辆音频质量系统，以及使用该系统的方法。 该系统包括：异构麦克风和噪声消除模块（NCM）的布置。 麦克风布置包括：第一麦克风和多个辅助麦克风。 NCM包括控制器和非暂时计算机可读介质，用于存储可由控制器执行的应用软件，以提高由第一麦克风接收的期望的机舱音频的质量，该软件执行以下步骤：从所述控制器接收所需的音频输入 第一麦克风 经由包括突然舱噪声输入的多个次级麦克风接收辅助音频输入; 并对突发舱噪声输入应用抑制程序。

公开(公告)号：US20160125865A1

公开(公告)日：2016-05-05

申请号：US14529743

申请日：2014-10-31

Applicant: GM Global Technology Operations LLC ,  General Motors LLC

Inventor： Bassam S. Shahmurad ,  MD Foezur Rahman Chowdhury

IPC: G10K11/16

CPC classification number: G10L21/0208 ,  G10L2021/02165 ,  G10L2021/02166

Abstract: A vehicle audio quality system for suppressing sudden vehicle cabin noise is provided, as well as methods of using the system. The system includes: an arrangement of heterogeneous microphones and a noise cancelation module (NCM). The microphone arrangement includes: a first microphone and a plurality of secondary microphones. The NCM includes a controller and a non-transitory computer-readable medium for storing application software executable by the controller to improve the quality of desired cabin audio received by the first microphone, the software performing the steps of: receiving a desired audio input from the first microphone; receiving supplemental audio input via the plurality of secondary microphones that includes a sudden cabin noise input; and applying a suppression procedure to the sudden cabin noise input.

Abstract translation: 提供了用于抑制突发车厢噪声的车辆音频质量系统，以及使用该系统的方法。 该系统包括：异构麦克风和噪声消除模块（NCM）的布置。 麦克风布置包括：第一麦克风和多个辅助麦克风。 NCM包括控制器和非暂时计算机可读介质，用于存储可由控制器执行的应用软件，以提高由第一麦克风接收的期望的机舱音频的质量，该软件执行以下步骤：从所述控制器接收所需的音频输入 第一麦克风 经由包括突然舱噪声输入的多个次级麦克风接收辅助音频输入; 并对突发舱噪声输入应用抑制程序。