V3s的ALSA录音录不到音,录的都是燥音,是不是没设置好
# ./amixer contents
numid=13,iface=MIXER,name='Headphone Source Playback Route'
; type=ENUMERATED,access=rw------,values=2,items=2
; Item #0 'DAC'
; Item #1 'Mixer'
: values=0,0
numid=3,iface=MIXER,name='Headphone Playback Switch'
; type=BOOLEAN,access=rw------,values=2
: values=on,on
numid=2,iface=MIXER,name='Headphone Playback Volume'
; type=INTEGER,access=rw---R--,values=1,min=0,max=63,step=0
: values=63
| dBscale-min=-63.00dB,step=1.00dB,mute=1
numid=5,iface=MIXER,name='Mic1 Boost Volume'
; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
: values=4
| dBrange-
rangemin=0,,rangemax=0
| dBscale-min=0.00dB,step=0.00dB,mute=0
rangemin=1,,rangemax=7
| dBscale-min=24.00dB,step=3.00dB,mute=0
numid=12,iface=MIXER,name='Mic1 Capture Switch'
; type=BOOLEAN,access=rw------,values=2
: values=on,on
numid=9,iface=MIXER,name='Mic1 Playback Switch'
; type=BOOLEAN,access=rw------,values=2
: values=off,off
numid=4,iface=MIXER,name='Mic1 Playback Volume'
; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
: values=3
| dBscale-min=-4.50dB,step=1.50dB,mute=0
numid=6,iface=MIXER,name='ADC Gain Capture Volume'
; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
: values=3
| dBscale-min=-4.50dB,step=1.50dB,mute=0
numid=7,iface=MIXER,name='DAC Playback Switch'
; type=BOOLEAN,access=rw------,values=2
: values=off,off
numid=1,iface=MIXER,name='DAC Playback Volume'
; type=INTEGER,access=rw---R--,values=1,min=0,max=63,step=0
: values=63
| dBscale-min=-73.08dB,step=1.16dB,mute=0
numid=8,iface=MIXER,name='DAC Reversed Playback Switch'
; type=BOOLEAN,access=rw------,values=2
: values=off,off
numid=10,iface=MIXER,name='Mixer Capture Switch'
; type=BOOLEAN,access=rw------,values=2
: values=off,off
numid=11,iface=MIXER,name='Mixer Reversed Capture Switch'
; type=BOOLEAN,access=rw------,values=2
: values=off,off
# ./amixer -c 0 cset numid=12 2
numid=12,iface=MIXER,name='Mic1 Capture Switch'
; type=BOOLEAN,access=rw------,values=2
: values=on,on
# ./amixer -c 0 sset 'Headphone',0 100% unmute
Simple mixer control 'Headphone',0
Capabilities: pvolume pvolume-joined pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 63
Mono:
Front Left: Playback 63 [100%] [0.00dB] [on]
Front Right: Playback 63 [100%] [0.00dB] [on]
# ./arecord -D hw:0,0 -d 3 -f S16_LE -r 16000 ttmp.wav
Recording WAVE 'ttmp.wav' : Signed 16 bit Little Endian, Rate 16000 Hz, Mono
# ./amixer -c 0 sset 'Headphone',0 100% unmute
Simple mixer control 'Headphone',0
Capabilities: pvolume pvolume-joined pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 63
Mono:
Front Left: Playback 63 [100%] [0.00dB] [on]
Front Right: Playback 63 [100%] [0.00dB] [on]
# ./aplay ttmp.wav
Playing WAVE 'ttmp.wav' : Signed 16 bit Little Endian, Rate 16000 Hz, Mono
#
离线