公开(公告)号：US20210185428A1

公开(公告)日：2021-06-17

申请号：US17183416

申请日：2021-02-24

Applicant: Texas Instruments Incorporated

Inventor： Nitish K. Murthy ,  Edwin Randolph Cole

IPC: H04R1/10 ,  G10K11/178

Abstract: From a first microphone, first microphone signals are received that represent first sound waves. From a second microphone, second microphone signals are received that represent second sound waves. In response to the first microphone signals, analog processing is performed to estimate noise in the first sound waves, and first analog signals are generated for cancelling at least some of the estimated noise in the first sound waves. In response to the second microphone signals, digital processing is performed to estimate noise in the second sound waves, and digital information is generated for cancelling at least some of the estimated noise in the second sound waves. The digital information is converted into second analog signals that represent the digital information. The first and second analog signals are combined into third analog signals for cancelling at least some of the estimated noise in the first and second sound waves.

公开(公告)号：US10966014B2

公开(公告)日：2021-03-30

申请号：US13646921

申请日：2012-10-08

Applicant: Texas Instruments Incorporated

Inventor： Nitish K. Murthy ,  Edwin Randolph Cole

IPC: H04R1/10 ,  G10K11/178 ,  H04R3/02 ,  H04R5/033

Abstract: From a first microphone, first microphone signals are received that represent first sound waves. From a second microphone, second microphone signals are received that represent second sound waves. In response to the first microphone signals, analog processing is performed to estimate noise in the first sound waves, and first analog signals are generated for cancelling at least some of the estimated noise in the first sound waves. In response to the second microphone signals, digital processing is performed to estimate noise in the second sound waves, and digital information is generated for cancelling at least some of the estimated noise in the second sound waves. The digital information is converted into second analog signals that represent the digital information. The first and second analog signals are combined into third analog signals for cancelling at least some of the estimated noise in the first and second sound waves.

公开(公告)号：US20130089212A1

公开(公告)日：2013-04-11

申请号：US13646921

申请日：2012-10-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Nitish K. Murthy ,  Edwin Randolph Cole

IPC: G10K11/16

CPC classification number: H04R1/1083 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3013 ,  G10K2210/3026 ,  G10K2210/3027 ,  H04R3/02 ,  H04R5/033 ,  H04R2410/05

Abstract: From a first microphone, first microphone signals are received that represent first sound waves. From a second microphone, second microphone signals are received that represent second sound waves. In response to the first microphone signals, analog processing is performed to estimate noise in the first sound waves, and first analog signals are generated for cancelling at least some of the estimated noise in the first sound waves. In response to the second microphone signals, digital processing is performed to estimate noise in the second sound waves, and digital information is generated for cancelling at least some of the estimated noise in the second sound waves. The digital information is converted into second analog signals that represent the digital information. The first and second analog signals are combined into third analog signals for cancelling at least some of the estimated noise in the first and second sound waves.

Abstract translation: 从第一麦克风接收代表第一声波的第一麦克风信号。 从第二麦克风接收代表第二声波的第二麦克风信号。 响应于第一麦克风信号，执行模拟处理以估计第一声波中的噪声，并且产生第一模拟信号以抵消第一声波中的估计噪声中的至少一些噪声。 响应于第二麦克风信号，执行数字处理以估计第二声波中的噪声，并且生成用于抵消第二声波中的估计噪声中的至少一些噪声的数字信息。 数字信息被转换成表示数字信息的第二模拟信号。 第一和第二模拟信号被组合成第三模拟信号，用于抵消第一和第二声波中的至少一些估计的噪声。