公开(公告)号：US20210021927A1

公开(公告)日：2021-01-21

申请号：US16511737

申请日：2019-07-15

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Charles B. Harmke ,  Kurt S. Fienberg ,  Daniel Grobe Sachs

IPC: H04R1/32 ,  H04R3/00 ,  H04R3/04 ,  G10L21/0216

Abstract: Systems and methods for beamforming audio signals received from a microphone array. One example embodiment provides an electronic device. The electronic device includes a microphone array and an electronic processor communicatively coupled to the microphone array. The electronic processor is configured to estimate an ambient noise level. The electronic processor is configured to compare the ambient noise level to a first threshold and a second threshold, the second threshold being lower than the first threshold. The electronic processor is configured to determine a beam pattern for the microphone array based on the comparison of the ambient noise level to the first threshold and the second threshold. The electronic processor is configured to apply the beam pattern to an audio signal received by the microphone array.

公开(公告)号：US20190361827A1

公开(公告)日：2019-11-28

申请号：US16536038

申请日：2019-08-08

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Daniel Grobe Sachs ,  Ellis A. Pinder ,  Charles B. Harmke

IPC: G06F13/38 ,  G06F13/40 ,  G06F13/42

Abstract: Methods and devices for connecting an accessory device to a connector port of a mobile communication device and automatically detecting an operational mode of the connector port are provided. The method includes implementing a USB Type-C device detection at an electronic processor of the mobile communication device and monitoring a first and second pin of the connector port for pull-up and pull-down signals from a connected accessory. The method also includes interrupting the USB Type-C device detection when a pull-down signal is detected and determining whether an accessory signal is detected at a third pin of the connector port. The method also includes implementing a LMR accessory detection when the accessory signal is detected and completing the USB Type-C device detection when the accessory signal is not detected.

公开(公告)号：US09998577B1

公开(公告)日：2018-06-12

申请号：US15626984

申请日：2017-06-19

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Charles B. Harmke ,  Daniel Grobe Sachs

IPC: H04B15/00 ,  H04M1/60 ,  H04R3/00 ,  G06F3/16 ,  G10H1/46 ,  H04W4/10 ,  H04B1/44

CPC classification number: H04M1/605 ,  G06F3/16 ,  G06F3/165 ,  G10H1/46 ,  H04B1/44 ,  H04B15/00 ,  H04M1/60 ,  H04R3/005 ,  H04R2201/403 ,  H04R2410/01 ,  H04R2410/05 ,  H04W4/10

Abstract: System and method for controlling incoming acoustic signals at a portable accessory communication system provides improved management of noise levels. A plurality of acoustic microphone arrays (120), formed of pairs of acoustic microphones, and a single vibration microphone (130) are enabled by pressing a push-to-talk (PTT) button (108). An audio signal is input to the acoustic microphone arrays and a vibration signal is input to the single vibration microphone. The audio signal is detected and compared to the vibration signal to determine a high noise environment. The single vibration microphone (130) controls beam formation of the acoustic microphone arrays in high noise environments based on predetermined noise thresholds being exceeded and selecting an optimum acoustic microphone pair from the arrays to direct a null targeted at the noise source.

公开(公告)号：US09807498B1

公开(公告)日：2017-10-31

申请号：US15254822

申请日：2016-09-01

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Charles B. Harmke ,  Kurt S. Fienberg

IPC: H04R1/40 ,  H04R3/04 ,  H04R1/08

CPC classification number: H04R3/005 ,  H04R2460/13

Abstract: System and method for beamforming audio signals received from a microphone array. The method includes receiving at least one audio signal from the microphone array. The method includes determining a plurality of beams based on the at least one audio signal. The method includes receiving from a vibration microphone at least one vibration signal, and filtering the at least one vibration signal to generate at least one filtered vibration signal. The method includes filtering the plurality of beams to generate a plurality of filtered beams. The method includes determining a plurality of correlation values, each of the plurality of correlation values based on one of the plurality of filtered beams and the at least one filtered vibration signal. The method includes determining a peak correlation value based on the plurality of correlation values, and selecting one of the plurality of beams based on the peak correlation value.

公开(公告)号：US09678909B1

公开(公告)日：2017-06-13

申请号：US15159528

申请日：2016-05-19

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Daniel Grobe Sachs ,  Charles B. Harmke

IPC: G06F13/10 ,  G06F13/38 ,  G06F13/40 ,  G06F13/24 ,  G06F1/32 ,  G06F11/30 ,  H04W4/10

CPC classification number: G06F13/385 ,  G06F1/3287 ,  G06F1/3296 ,  G06F11/3051 ,  G06F13/24 ,  G06F13/4022 ,  H04B1/44 ,  H04M1/72527

Abstract: A method of exchanging data between an electronic device and an external accessory. In one example, the method includes receiving, at an interface of the electronic device, a connector of the external accessory. The method also includes transmitting, via a first pin of the interface, data between the external accessory and the electronic device, and interrupting, with an electronic processor of the electronic device, data transmission between the external accessory and the electronic device via the first pin of the interface. The method further includes while data transmission is interrupted, detecting, via the first pin of the interface, an activation of a talk actuator, and activating, via the electronic processor, a transmitter in response to detecting the activation of the talk actuator.