Handset mic record audio to play buzzing


#1

I tinyplay wav is buzzing noise when I record audio,
tinymix ‘MultiMedia1 Mixer TERT_MI2S_TX’ 1
tinymix ‘DEC1 MUX’ 'ADC1’
tinymix ‘IIR1 INP1 MUX’ 'DEC1’
tinycap /data/audio/capture_hs.wav -D 0 -d 0 -c 1 -r 48000 -b 16 &
kill -2 <PID>
tinyplay /data/audio/capture_hs.wav ===>buzzing noise
How to config handset(speaker)mic to record wav file? or need I to enable CDC_MIC_BIAS1?