公开(公告)号：US20160295320A1

公开(公告)日：2016-10-06

申请号：US14673886

申请日：2015-03-31

Applicant: ASUSTeK COMPUTER INC.

Inventor： Bhoomek D. Pandya ,  Nikhil Bhave

IPC: H04R1/40 ,  G10L25/78 ,  H03G3/20

CPC classification number: H04R1/406 ,  G10L21/0208 ,  G10L25/12 ,  G10L25/78 ,  G10L2021/02166 ,  H03G3/3005 ,  H04R3/005 ,  H04R2430/25

Abstract: Accordingly, the present disclosure is directed to an audio capturing enhancement method and an audio capturing system using the same method. The audio capturing system includes at least but not limited to two microphones for recording an audio data, an amplifier coupled to the at least two microphones for adjusting the audio data by applying automatic gain control (AGC) in order to generate a gain adjusted data that is within a predefined level, and a processing circuit coupled to the amplifier for calculating a linear predictive coding (LPC) residue of the gain adjusted data, determining from the LPC residue a first source at a first direction relative to the at least two microphones based on time different of arrival (TDOA), and attenuating any source at a second direction that is outside of a predefined direction.

Abstract translation: 因此，本公开涉及使用相同方法的音频捕获增强方法和音频捕获系统。 音频捕获系统至少包括但不限于用于记录音频数据的两个麦克风，耦合到至少两个麦克风的放大器，用于通过应用自动增益控制（AGC）来调整音频数据，以产生增益调整数据， 以及处理电路，其耦合到所述放大器，用于计算所述增益调整数据的线性预测编码（LPC）残差，从所述LPC残差确定相对于所述至少两个麦克风的第一方向上的第一源 准时到达（TDOA）不同，并且在预定方向外的第二方向衰减任何源。

公开(公告)号：US09699549B2

公开(公告)日：2017-07-04

申请号：US14673886

申请日：2015-03-31

Applicant: ASUSTeK COMPUTER INC.

Inventor： Bhoomek D. Pandya ,  Nikhil Bhave

IPC: H04R3/00 ,  H04R1/40 ,  G10L21/0208 ,  G10L25/78 ,  G10L21/0216 ,  G10L25/12 ,  H03G3/30

CPC classification number: H04R1/406 ,  G10L21/0208 ,  G10L25/12 ,  G10L25/78 ,  G10L2021/02166 ,  H03G3/3005 ,  H04R3/005 ,  H04R2430/25

Abstract: Accordingly, the present disclosure is directed to an audio capturing enhancement method and an audio capturing system using the same method. The audio capturing system includes at least but not limited to two microphones for recording an audio data, an amplifier coupled to the at least two microphones for adjusting the audio data by applying automatic gain control (AGC) in order to generate a gain adjusted data that is within a predefined level, and a processing circuit coupled to the amplifier for calculating a linear predictive coding (LPC) residue of the gain adjusted data, determining from the LPC residue a first source at a first direction relative to the at least two microphones based on time different of arrival (TDOA), and attenuating any source at a second direction that is outside of a predefined direction.