公开(公告)号：US09711162B2

公开(公告)日：2017-07-18

申请号：US13539380

申请日：2012-06-30

Applicant: Nitish Krishna Murthy ,  Takahiro Unno ,  Edwin R. Cole

Inventor： Nitish Krishna Murthy ,  Takahiro Unno ,  Edwin R. Cole

IPC: G10L21/00 ,  G10L15/00 ,  H03G3/00 ,  G10L21/0208 ,  G10L15/20 ,  G10L25/78 ,  G10L25/84

CPC classification number: G10L21/0208 ,  G10L15/20 ,  G10L25/78 ,  G10L25/84 ,  H03G3/001

Abstract: A method of environmental noise compensation a speech audio signal is provided that includes estimating a fast audio energy level and a slow audio energy level in an audio environment, wherein the speech audio signal is not part of the audio environment, and applying a gain to the speech audio signal to generate an environment compensated speech audio signal, wherein the gain is updated based on the estimated slow audio energy level when the estimated fast audio energy level is not indicative of an audio event in the audio environment and the estimated gain is not updated when the estimated fast audio energy level is indicative an audio event in the audio environment.

公开(公告)号：US09137611B2

公开(公告)日：2015-09-15

申请号：US13594401

申请日：2012-08-24

Applicant: Takahiro Unno ,  Nitish Krishna Murthy

Inventor： Takahiro Unno ,  Nitish Krishna Murthy

IPC: G10L21/02 ,  H04R25/00 ,  H04R3/00

CPC classification number: H04R25/405 ,  H04R3/005 ,  H04R2430/03 ,  H04R2499/11

Abstract: In response to a signal failing to exceed an estimated level of noise by more than a predetermined amount for more than a predetermined continuous duration, the estimated level of noise is adjusted according to a first time constant in response to the signal rising and a second time constant in response to the signal falling, so that the estimated level of noise falls more quickly than it rises. In response to the signal exceeding the estimated level of noise by more than the predetermined amount for more than the predetermined continuous duration, a speed of adjusting the estimated level of noise is accelerated.

Abstract translation: 响应于超过预定持续时间超过预定量的估计噪声水平的信号，响应于信号上升和第二时间，根据第一时间常数调整估计噪声水平 响应于信号下降是恒定的，使得估计的噪声水平比其上升更快地下降。 响应于超过预定连续持续时间超过预定量的噪声估计值的信号，加速了估计噪声水平的调整速度。

公开(公告)号：US20130051570A1

公开(公告)日：2013-02-28

申请号：US13594401

申请日：2012-08-24

Applicant: Takahiro Unno ,  Nitish Krishna Murthy

Inventor： Takahiro Unno ,  Nitish Krishna Murthy

IPC: H04R29/00

CPC classification number: H04R25/405 ,  H04R3/005 ,  H04R2430/03 ,  H04R2499/11

Abstract: In response to a signal failing to exceed an estimated level of noise by more than a predetermined amount for more than a predetermined continuous duration, the estimated level of noise is adjusted according to a first time constant in response to the signal rising and a second time constant in response to the signal falling, so that the estimated level of noise falls more quickly than it rises. In response to the signal exceeding the estimated level of noise by more than the predetermined amount for more than the predetermined continuous duration, a speed of adjusting the estimated level of noise is accelerated.

Abstract translation: 响应于超过预定持续时间超过预定量的估计噪声水平的信号，响应于信号上升和第二时间，根据第一时间常数调整估计噪声水平 响应于信号下降是恒定的，使得估计的噪声水平比其上升更快地下降。 响应于超过预定连续持续时间超过预定量的噪声估计值的信号，加速了估计噪声水平的调整速度。

公开(公告)号：US20130013304A1

公开(公告)日：2013-01-10

申请号：US13539380

申请日：2012-06-30

Applicant: Nitish Krishna Murthy ,  Takahiro Unno ,  Edwin R. Cole

Inventor： Nitish Krishna Murthy ,  Takahiro Unno ,  Edwin R. Cole

IPC: G10L21/02

CPC classification number: G10L21/0208 ,  G10L15/20 ,  G10L25/78 ,  G10L25/84 ,  H03G3/001

Abstract: A method of environmental noise compensation a speech audio signal is provided that includes estimating a fast audio energy level and a slow audio energy level in an audio environment, wherein the speech audio signal is not part of the audio environment, and applying a gain to the speech audio signal to generate an environment compensated speech audio signal, wherein the gain is updated based on the estimated slow audio energy level when the estimated fast audio energy level is not indicative of an audio event in the audio environment and the estimated gain is not updated when the estimated fast audio energy level is indicative an audio event in the audio environment.

Abstract translation: 提供了一种环境噪声补偿方法，其包括在音频环境中估计快速音频能级和慢音频能级，其中语音音频信号不是音频环境的一部分，并且将增益应用于 语音音频信号以产生环境补偿语音音频信号，其中当估计的快速音频能量水平不指示音频环境中的音频事件并且估计的增益不被更新时，基于估计的慢音频能量水平来更新增益 当估计的快速音频能量水平指示音频环境中的音频事件时。