公开(公告)号：US09191732B2

公开(公告)日：2015-11-17

申请号：US14215752

申请日：2014-03-17

Applicant: LIGHTSPEED AVIATION, INC.

Inventor： Michael J. Wurtz

IPC: H04R1/10 ,  H04M1/60 ,  H04R5/033

CPC classification number: H04R1/1083 ,  H04M1/6058 ,  H04R5/033 ,  H04R2201/107

Abstract: An active-noise-reduction (ANR) headset includes at least one auxiliary connection to an output of at least one device, such as a personal communications, computing, and/or entertainment device. An exemplary headset also includes a primary connection to a two-way radio or public-address system and circuitry for automatically suppressing or muting the volume of an auxiliary input signal relative to that of a primary input signal. Other exemplary features include a headset power supply, a microphone, a microphone preamplifier, and a device-detection circuit. The device-detection circuit selectively couples the power supply to the microphone preamplifier, enabling it to provide audio signals to the microphone input of the auxiliary device.

Abstract translation: 主动噪声降低（ANR）耳机包括至少一个辅助连接到至少一个设备的输出，诸如个人通信，计算和/或娱乐设备。 示例性耳机还包括到双向无线电或公共地址系统的主要连接以及相对于主要输入信号的辅助输入信号的音量自动抑制或静音的电路。 其它示例性特征包括耳机电源，麦克风，麦克风前置放大器和设备检测电路。 设备检测电路选择性地将电源耦合到麦克风前置放大器，使其能够向辅助设备的麦克风输入提供音频信号。

公开(公告)号：US09837066B2

公开(公告)日：2017-12-05

申请号：US15069271

申请日：2016-03-14

Applicant: Lightspeed Aviation, Inc.

Inventor： Michael J. Wurtz

IPC: H04B15/00 ,  G10K11/178 ,  H04R1/10

CPC classification number: G10K11/178 ,  G10K11/17854 ,  G10K11/17881 ,  G10K2210/1081 ,  G10K2210/3027 ,  G10K2210/3055 ,  H04R1/1083 ,  H04R2460/01

Abstract: A system and method for adaptive active noise reduction measure the acoustic response for each user to adaptively adjust and customize the ANR operation using adaptive filters to correct for any differences between the measured response and a targeted response. The system and method of various embodiments incorporate a closed loop control system with a feedforward input. The acoustic measurement and adaptation procedure is performed to adapt or tune at least one of the closed loop and feedforward control loops to provide adaptive ANR customized for each user and current ambient environment.