公开(公告)号：US09232333B2

公开(公告)日：2016-01-05

申请号：US14444034

申请日：2014-07-28

Applicant: Analog Devices, Inc.

Inventor： Juri Ranieri ,  David Wingate ,  Noah Daniel Stein

IPC: H04R29/00

CPC classification number: H04R29/005 ,  H04R2201/003

Abstract: The disclosed apparatus, systems, and methods provide a calibration technique for calibrating a set of microphones. The disclosed calibration technique is configured to calibrate the microphones with respect to a reference microphone and can be used in actual operation rather than a testing environment. The disclosed calibration technique can estimate both the magnitude calibration factor for compensating magnitude sensitivity variations and the relative phase error for compensating phase delay variations. In addition, the disclosed calibration technique can be used even when multiple acoustic sources are present. The disclosed technique is particularly well suited to calibrating a set of microphones that are omnidirectional and sufficiently close to one another.

Abstract translation: 所公开的装置，系统和方法提供了用于校准一组麦克风的校准技术。 所公开的校准技术被配置为相对于参考麦克风校准麦克风，并且可以用于实际操作而不是测试环境。 所公开的校准技术可以估计用于补偿幅度灵敏度变化的幅度校准因子和用于补偿相位延迟变化的相对相位误差。 此外，即使存在多个声源，也可以使用所公开的校准技术。 所公开的技术特别适合于校准一组麦克风，这些麦克风是全向且足够接近的。

公开(公告)号：US09232332B2

公开(公告)日：2016-01-05

申请号：US14341998

申请日：2014-07-28

Applicant: Analog Devices, Inc.

Inventor： Juri Ranieri ,  David Wingate ,  Noah Daniel Stein

IPC: H04R29/00

CPC classification number: H04R29/005 ,  H04R2201/003

Abstract: The disclosed apparatus, systems, and methods provide a calibration technique for calibrating a set of microphones. The disclosed calibration technique is configured to calibrate the microphones with respect to a reference microphone and can be used in actual operation rather than a testing environment. The disclosed calibration technique can estimate both the magnitude calibration factor for compensating magnitude sensitivity variations and the relative phase error for compensating phase delay variations. In addition, the disclosed calibration technique can be used even when multiple acoustic sources are present. The disclosed technique is particularly well suited to calibrating a set of microphones that are omnidirectional and sufficiently close to one another.

Abstract translation: 所公开的装置，系统和方法提供了用于校准一组麦克风的校准技术。 所公开的校准技术被配置为相对于参考麦克风校准麦克风，并且可以用于实际操作而不是测试环境。 所公开的校准技术可以估计用于补偿幅度灵敏度变化的幅度校准因子和用于补偿相位延迟变化的相对相位误差。 此外，即使存在多个声源，也可以使用所公开的校准技术。 所公开的技术特别适合于校准一组麦克风，这些麦克风是全向且足够接近的。