Signal switching method for internal and external microphone
A microphone signal, internal and external technology, applied in the direction of speaker distribution signal, etc., can solve the problem of not being able to distinguish whether the microphone is in place alone
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[0027] Below according to accompanying drawing and embodiment the present invention will be described in further detail:
[0028] Such as figure 2 As shown, the present invention provides a method for switching between internal and external microphones in a device (such as a mobile phone) in which the microphone signal and the earphone signal share an audio socket, and adopts a separate presence detection circuit to externally place the sound playback device (speaker or earphone) respectively. ) and whether the microphone is in place to detect, and then notify the respective electronic switches to perform corresponding actions. According to the detection result of the external sound playback device, choose to output the audio signal to the built-in or external sound playback device. When the external sound playback device is in place, output the audio signal to the external sound playback device; according to the external microphone For the in-position detection result, sele...
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