Joint processing of optical and acoustic microphone signals

    公开(公告)号:US12069431B2

    公开(公告)日:2024-08-20

    申请号:US17749068

    申请日:2022-05-19

    申请人: Apple Inc.

    摘要: Aspects of the subject technology provide for joint processing of signals from acoustic microphones and signals from vibration sensors that directly or remotely sense vibrations of the source of the sound itself. The vibration sensors may include remote vibration sensors such as a light-based microphone, which may be implemented as an optical microphone. Joint processing of the signals may include detecting a sound from the source in the signals from the acoustic microphone by selecting a portion of the signals from the acoustic microphone based on the signals from the vibration sensor.

    SOUND CAPTURING METHOD, MICROPHONE, AND ELECTRONIC DEVICE

    公开(公告)号:US20240259735A1

    公开(公告)日:2024-08-01

    申请号:US18630495

    申请日:2024-04-09

    摘要: This disclosure provides methods and apparatuses related to a microphone. In an implementation, a microphone includes a laser self-mixing apparatus and a diaphragm apparatus, the diaphragm apparatus includes a membrane configured to respond to a sound vibration, and the laser self-mixing apparatus and the diaphragm apparatus are separately configured to detect a vibration of the membrane. In an example method performed by the microphone, a first voltage signal is obtained by using the laser self-mixing apparatus, and a second voltage signal is simultaneously obtained by using the diaphragm apparatus. If the first voltage signal is less than or equal to a preset threshold, the first voltage signal is converted into an audio signal; or if the first voltage signal is greater than the preset threshold, the second voltage signal is converted into an audio signal.