公开(公告)号：US20140334632A1

公开(公告)日：2014-11-13

申请号：US14301115

申请日：2014-06-10

Applicant: ST-ERICSSON INDIA PVT. LTD. ,  ST-ERICSSON SA

Inventor： SANJEEV RANGANATHAN ,  SHYAM SOMAYAJULA ,  SRINATH SRIDHARAN ,  LIONEL CIMAZ

IPC: H04R3/00 ,  G10K11/00

CPC classification number: H04R3/002 ,  G10K11/002 ,  H04R3/00 ,  H04R3/007

Abstract: Systems and methods for suppressing pop-up noise in an audio signal are disclosed. The system includes a driver circuit shared by a pin interface and a complementary pin interface. A control unit is coupled to the pin interface and the complementary pin interface. To activate the pin interface, the control unit is configured to first activate the driver output at the complementary pin interface. Once the complementary pin interface achieves a preset voltage, the driver output is switched to the pin interface by the control unit. In addition, the driver circuit can be calibrated for a DC offset on the complementary pin interface by re-using calibration data calculated at the pin interface. Further, DC correction signals can be provided from a pre-biasing circuit based on the calibration data of the driver circuit.

Abstract translation: 公开了用于抑制音频信号中的弹出噪声的系统和方法。 该系统包括由引脚接口和互补引脚接口共享的驱动器电路。 控制单元耦合到引脚接口和互补引脚接口。 要激活引脚接口，控制单元配置为首先在互补引脚接口处激活驱动器输出。 一旦互补引脚接口达到预设电压，驱动器输出就由控制单元切换到引脚接口。 此外，可以通过重新使用在引脚接口处计算出的校准数据，在互补引脚接口上校准驱动器电路的直流偏移。 此外，可以基于驱动器电路的校准数据从预偏置电路提供直流校正信号。

公开(公告)号：US20140341386A1

公开(公告)日：2014-11-20

申请号：US14283023

申请日：2014-05-20

Applicant: ST-Ericsson SA

Inventor： LIONEL CIMAZ

IPC: H04R3/00

CPC classification number: H04R3/005 ,  H04R2410/05 ,  H04R2499/11

Abstract: An apparatus comprising a controller, a first acoustic sensor and a second acoustic sensor, wherein said first acoustic sensor is arranged remote from said second acoustic sensor, and wherein said controller is configured to receive a main signal from said first acoustic sensor, receive a probe signal from said second acoustic sensor, generate a noise signal by subtracting with a first filter filtered said main signal from said probe signal, and generate a noise reduced voice signal by subtracting with a second filter filtered noise signal from said main signal, wherein said first filter is adapted based on a voice component of the main signal and the probe signal in the absence or near absence of noise and said second filter is adapted based on the noise components of said main signal and said probe signal when no voice input is present.

Abstract translation: 一种包括控制器，第一声学传感器和第二声学传感器的装置，其中所述第一声学传感器布置成远离所述第二声学传感器，并且其中所述控制器被配置为从所述第一声学传感器接收主信号，接收探针 来自所述第二声传感器的信号通过从所述探测信号中减去滤波所述主信号的第一滤波器产生噪声信号，并通过从所述主信号中减去第二滤波器滤波的噪声信号来产生降噪语音信号，其中所述第一 在没有噪声或不存在噪声的情况下，基于主信号和探测信号的语音分量来适应滤波器，并且当没有语音输入时，所述第二滤波器基于所述主信号和所述探测信号的噪声分量来适应。