Motorola Corporation

Motorola Solutions, Inc.

David M Yeager

Jorge L Garcia

Deborah A Gruenhagen

Karl F Mueller

Peter M Pavlov

Sivakumar Muthuswamy

Peter B Gilmore

Patrick S Claeys

Peter J Bartels

Javier Alfaro

Andrew P Miehl

Charles E Kline

Jason Darrell McIntosh

Kurt S Fienberg

Andrew A Efanov

Anthony J Suppelsa

Vitaliy Gurevich

Nikola Kaludjerski

Jianfeng Shi

Systems and methods for beamforming audio signals received from a microphone array. One method includes receiving, with an electronic processor communicatively coupled to the microphone array, a plurality of audio signals from the microphone array. The method includes generating a plurality of beams based on the plurality of audio signals. The method includes detecting that an electronic device is in a body-worn position. The method includes, in response to the device being in the body-worn position, determining at least one restricted direction based on the body-worn position. The method includes generating, for each of the plurality of beams, a likelihood statistic. The method includes, for each of the beams, assigning a weight to the likelihood statistic based on the at least one restricted direction to generate a weighted likelihood statistic. The method includes generating an output audio stream from the plurality of beams based on the weighted likelihood statistic.

Beam selection for body worn devices

A method and apparatus for scheduling short uplink transmissions on a mobile communication device. Embodiments of the invention include a method of scheduling an uplink transmission on a mobile communication device. In one exemplary embodiment, the method includes establishing a predetermined uplink delay time, and generating an uplink message. The method further includes determining that an audio event is occurring on the mobile communication device, and monitoring an audio amplitude of the audio event. The method further includes transmitting the uplink message when the first of either a pause in the audio event is detected or when the predetermined uplink delay time has elapsed.

Method of scheduling short uplink transmissions

A microphone porting and venting assembly () is formed of a remote support substrate () providing a () acoustically resistive element with dedicated venting cavities () along with an external baffle () providing acoustic channels () which further provide water drainage and external sound sampling points (). The microphone porting and venting assembly () is well suited waterproof, noise cancelling microphone systems.

Multi-microphone porting and venting structure for a communication device

A portable radio () having a control knob () can further enable additional radio control functions through a rapid back and forth bi-directional rotation () of the knob (). No additional buttons or menu features are required.

Control interface for a communication device

A dual-sided radio () for enhancing a user's experience is provided. The radio includes a primary transducer () on an audio-side of the radio that projects a primary sound, a secondary transducer () on a data-side of the radio that projects a mid-high frequency sound, a processor () that equalizes () audio to the primary transducer and the secondary transducer, and a communication module () that receives and transmits communication signals containing the audio. The secondary transducer supplements the primary sound with a mid-high frequency sound () to compensate for mid-high frequency loss of the primary sound due to diffraction ().

Radio with dual sided audio

A user interface for a communication device includes a light emitting diode (LED) () providing both a transmit-carrier indicator and transmit-audio feedback to the user. By varying the intensity () and/or color spectrum () of the LED (). relative to changes in transmitted audio, the user is provided with transmit-audio feedback. If LED () is a bi-color LED, then receive-audio feedback can also be indicated to the user by varying the second color's intensity and/or spectrum.

Radio audio indicator

A communication device () is provided with a technique () for self-diagnosing an air leak. The leak is determined without having to open the communication device by applying a temporary excitation signal to the speaker terminals () to produce a damped response () and then monitoring the damped response () of the speaker.

Air leak self-diagnosis for a communication device

A microphone system () includes a MEMS microphone () and at least one audio port () accessing the rear volume portion () of the MEMS microphone providing directional functionality, preferably through a MEMS switch ().

Microphone system for a communication device

A speaker () having a diagnostic capability, as well as a circuit () and related methods () for performing speaker diagnostics based upon a driving-point impedance are provided. The speaker includes a flexible cone () and a voice coil () connected to the flexible cone for driving the flexible cone so as to convert electrical signals into sound. The speaker also includes a signal source () connected to the voice coil for supplying a test signal to the voice coil. The speaker further includes a signal sensor () electrically connected to the voice coil for sensing a response signal occurring in response to the test signal. Additionally, the speaker includes a condition determining module () for determining a driving-point impedance based upon the response signal and for comparing the driving-point impedance to a predetermined impedance to thereby determine a condition of the speaker.

Speaker diagnostics based upon driving-point impedance

A communications receiver earpiece, for example in a cellular handset, including a sound-generating device () located on an inner portion of a housing, a sound port () extending through the housing from the inner portion thereof and emerging from an outer portion of the housing. A sound-port cover () is disposed over the sound port () on the outer portion of the housing. A portionof the sound-port cover extending outwardly of the sound port where the sound port emerges from the out portion of the housing.

Growing community of inventors

Boca Raton, FL, United States of America

David M Yeager