build_embed_linux_system

音频输出和采样模块

driver

app

# 播放音乐
amixer sset Headphone 100,100
amixer sset Speaker 120,120
amixer sset 'Right Output Mixer PCM' on
amixer sset 'Left Output Mixer PCM' on

aplay test1.wav

#!/bin/sh
#设置捕获的音量
amixer cset name='Capture Volume' 100,100
amixer cset name='Capture Switch' on

amixer sset 'PCM Playback -6dB' on
amixer sset 'Playback' 256
amixer sset 'Right Output Mixer PCM' on
amixer sset 'Left Output Mixer PCM' on

#ADC PCM
amixer sset 'ADC PCM' 200

#耳机/喇叭（扬声器）设置播放音量，直流/交流
amixer sset 'Headphone Playback ZC' on
amixer sset Headphone 125,125
amixer sset 'Speaker Playback ZC' on
amixer sset Speaker 125,125
amixer sset 'Speaker AC' 4
amixer sset 'Speaker DC' 4
amixer sset 'Left Input Mixer Boost' off
amixer sset 'Left Boost Mixer LINPUT1' off
amixer sset 'Left Input Boost Mixer LINPUT1' 0
amixer sset 'Left Boost Mixer LINPUT2' off
amixer sset 'Left Input Boost Mixer LINPUT2' 0
amixer sset 'Left Boost Mixer LINPUT3' off
amixer sset 'Left Input Boost Mixer LINPUT3' 0

#音频输入，右声道管理，全部关闭
amixer sset 'Right Input Mixer Boost' on
amixer sset 'Right Boost Mixer RINPUT1' off
amixer sset 'Right Input Boost Mixer RINPUT2' 0
amixer sset 'Right Boost Mixer RINPUT2' on
amixer sset 'Right Input Boost Mixer RINPUT2' 127
amixer sset 'Right Boost Mixer RINPUT3' off
amixer sset 'Right Input Boost Mixer RINPUT3' 0

# 录音10s
arecord -f cd -d 10 record.wav

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