1, the sound trouble largely inside the speaker from the circumstance of no sound supply has noise, sounds or existing audio.Microphone can effectively reduce environmental noise (reduce auditory digital noise reduction)
two, the whistling difficulty primarily from the microphone obtain can not be raised or quantity is not really high, will happen in the acoustic suggestions and crank out whistling.
The first move
Initially exclude external things prompted through the recent seem or sound troubles, external will cause are none besides, you will find only three, external audio machines,
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