公开(公告)号：US20150142426A1

公开(公告)日：2015-05-21

申请号：US14401198

申请日：2013-08-01

Applicant: Goertek, Inc.

Inventor： Liu Song ,  Bo Li ,  Shasha Lou

IPC: G10L21/0208 ,  G10L25/78

CPC classification number: G10L21/0208 ,  G10L21/02 ,  G10L25/78 ,  G10L2021/02161 ,  H04M1/6008 ,  H04M2250/12

Abstract: The present invention discloses a speech enhancement method and device for mobile phones. By the method and device provided by the present invention, the mobile phone holding state of a user is detected when the user is talking on the phone, so that different denoising solutions will be employed according to the state of the user in holding the mobile phone. When the user holds the mobile phone normally, a solution integrating multi-microphone denoising and single-microphone denoising will be employed to effectively suppress both the steady noise and the non-steady noise; and when the user holds the mobile phone abnormally, a solution of single-microphone denoising will be employed only to suppress the steady noise. The distortion of speech by multi-microphone denoising is avoided, and the speech quality is ensured.

Abstract translation: 本发明公开了一种用于移动电话的语音增强方法和装置。 通过本发明提供的方法和装置，当用户正在通话时检测用户的手机保持状态，从而根据用户握持手机的状态采用不同的去噪方案 。 当用户正常握住手机时，将采用集成多麦克风去噪和单麦克风去噪的解决方案，有效抑制稳定噪声和非稳定噪声; 当用户手持手机不正常时，单麦克风去噪的解决方案只能用于抑制稳定的噪声。 避免了多麦克风去噪的语音失真，保证了语音质量。

公开(公告)号：US20140233723A1

公开(公告)日：2014-08-21

申请号：US14351225

申请日：2013-05-30

Applicant: Goertek, Inc.

Inventor： Shasha Lou ,  Bo Li ,  Xiaojie Wu

IPC: H04M9/08

CPC classification number: H04M9/082 ,  G10L21/02

Abstract: Disclosed in the invention is a method and system for sampling rate mismatch correction of transmitting and receiving terminals, which can obtain a high-precision sampling rate mismatch in real time, carry out sampling rate correction on transmitting and receiving terminal signals, and send the transmitting terminal signal and the receiving terminal signal that have the same sampling rate after corrected to an echo cancellation system to carry out echo cancellation. The present invention can improve the quality of echo cancellation, simplify the computation and reduce the cost. The method for sampling rate mismatch correction of transmitting and receiving terminals provided in the embodiments of the invention comprises: calculating a transfer function of a receiving terminal signal relative to a transmitting terminal signal at each sampling timing according to the transmitting and receiving terminal signals; obtaining a transmission time delay of the transmitting and receiving terminals at each sampling timing using the transfer function; obtaining a sampling rate mismatch of the transmitting and receiving terminals at each sampling timing by means of parameter fitting using the transmission time delay and the linear relationship between the transmission time delay and the sampling rate mismatch; and adjusting the sampling rate of the transmitting terminal signal or the receiving terminal signal at each sampling timing according to the sampling rate mismatch.

Abstract translation: 本发明公开了一种发送和接收终端采样速率失配校正的方法和系统，其可以实时获得高精度采样率失配，对发送和接收终端信号进行采样率校正，并发送 终端信号和接收终端信号，其在校正到回波消除系统之后具有相同的采样率，以执行回声消除。 本发明可以提高回声消除的质量，简化计算并降低成本。 本发明实施例提供的发送和接收终端的采样率失配校正方法包括：根据发送和接收终端信号，在每个采样定时根据发送终端信号计算接收终端信号的传递函数; 使用传递函数在每个采样定时获得发送和接收终端的传输时间延迟; 通过使用传输时间延迟和传输时间延迟与采样率失配之间的线性关系的参数拟合，在每个采样定时获得发射和接收终端的采样率失配; 并且根据采样率不匹配在每个采样定时调整发送终端信号或接收终端信号的采样率。