10-11-2017, 10:39 PM
I have gotten sounds working using the instructions over here.
Thread Modes Use Audiojack instead of HDMI audio
The sound quality seems very poor though. I'm using this to replace an RPiA that I just cant deal with anymore.
I'm trying to produce a low frequency sine sweep with the following command:
I can hear it but there appears to be a lot of distortion, or perhaps the incorrect frequency. Anything to check on how this is setup?
Here are my alsamixer settings:
thanks,
Devan
Thread Modes Use Audiojack instead of HDMI audio
The sound quality seems very poor though. I'm using this to replace an RPiA that I just cant deal with anymore.
I'm trying to produce a low frequency sine sweep with the following command:
Code:
play -n synth 10 sine 30:45I can hear it but there appears to be a lot of distortion, or perhaps the incorrect frequency. Anything to check on how this is setup?
Here are my alsamixer settings:
Code:
root@DietPi:~# cat /var/lib/alsa/asound.state
state.sndhdmi {
control.1 {
iface MIXER
name 'hdmi audio format Function'
value pcm
comment {
access 'read write'
type ENUMERATED
count 1
item.0 null
item.1 pcm
item.2 AC3
item.3 MPEG1
item.4 MP3
item.5 MPEG2
item.6 AAC
item.7 DTS
item.8 ATRAC
item.9 ONE_BIT_AUDIO
item.10 DOLBY_DIGITAL_PLUS
item.11 DTS_HD
item.12 MAT
item.13 WMAPRO
}
}
}
state.audiocodec {
control.1 {
iface MIXER
name 'AIF1 ADC timeslot 0 volume'
value.0 166
value.1 166
comment {
access 'read write'
type INTEGER
count 2
range '0 - 255'
dbmin -11925
dbmax 7200
dbvalue.0 525
dbvalue.1 525
}
}
control.2 {
iface MIXER
name 'AIF1 ADC timeslot 1 volume'
value.0 160
value.1 160
comment {
access 'read write'
type INTEGER
count 2
range '0 - 255'
dbmin -11925
dbmax 7200
dbvalue.0 75
dbvalue.1 75
}
}
control.3 {
iface MIXER
name 'AIF1 DAC timeslot 0 volume'
value.0 160
value.1 160
comment {
access 'read write'
type INTEGER
count 2
range '0 - 255'
dbmin -11925
dbmax 7200
dbvalue.0 75
dbvalue.1 75
}
}
control.4 {
iface MIXER
name 'AIF1 DAC timeslot 1 volume'
value.0 160
value.1 160
comment {
access 'read write'
type INTEGER
count 2
range '0 - 255'
dbmin -11925
dbmax 7200
dbvalue.0 75
dbvalue.1 75
}
}
control.5 {
iface MIXER
name 'AIF1 ADC timeslot 0 mixer gain'
value.0 11
value.1 11
comment {
access 'read write'
type INTEGER
count 2
range '0 - 15'
dbmin -600
dbmax 8400
dbvalue.0 6000
dbvalue.1 6000
}
}
control.6 {
iface MIXER
name 'AIF1 ADC timeslot 1 mixer gain'
value.0 2
value.1 2
comment {
access 'read write'
type INTEGER
count 2
range '0 - 3'
dbmin -600
dbmax 1200
dbvalue.0 600
dbvalue.1 600
}
}
control.7 {
iface MIXER
name 'AIF2 ADC volume'
value.0 166
value.1 166
comment {
access 'read write'
type INTEGER
count 2
range '0 - 255'
dbmin -11925
dbmax 7200
dbvalue.0 525
dbvalue.1 525
}
}
control.8 {
iface MIXER
name 'AIF2 DAC volume'
value.0 160
value.1 160
comment {
access 'read write'
type INTEGER
count 2
range '0 - 255'
dbmin -11925
dbmax 7200
dbvalue.0 75
dbvalue.1 75
}
}
control.9 {
iface MIXER
name 'AIF2 ADC mixer gain'
value.0 11
value.1 11
comment {
access 'read write'
type INTEGER
count 2
range '0 - 15'
dbmin -600
dbmax 8400
dbvalue.0 6000
dbvalue.1 6000
}
}
control.10 {
iface MIXER
name 'ADC volume'
value.0 160
value.1 160
comment {
access 'read write'
type INTEGER
count 2
range '0 - 255'
dbmin -11925
dbmax 7200
dbvalue.0 75
dbvalue.1 75
}
}
control.11 {
iface MIXER
name 'DAC volume'
value.0 0
value.1 0
comment {
access 'read write'
type INTEGER
count 2
range '0 - 255'
dbmin -11925
dbmax 7200
dbvalue.0 -11925
dbvalue.1 -11925
}
}
control.12 {
iface MIXER
name 'DAC mixer gain'
value.0 11
value.1 11
comment {
access 'read write'
type INTEGER
count 2
range '0 - 15'
dbmin -600
dbmax 8400
dbvalue.0 6000
dbvalue.1 6000
}
}
control.13 {
iface MIXER
name 'digital volume'
value 0
comment {
access 'read write'
type INTEGER
count 1
range '0 - 63'
dbmin -7308
dbmax 0
dbvalue.0 -7308
}
}
control.14 {
iface MIXER
name 'earpiece volume'
value 25
comment {
access 'read write'
type INTEGER
count 1
range '0 - 31'
dbmin -4350
dbmax 300
dbvalue.0 -600
}
}
control.15 {
iface MIXER
name 'speaker volume'
value 26
comment {
access 'read write'
type INTEGER
count 1
range '0 - 31'
dbmin -4800
dbmax -150
dbvalue.0 -900
}
}
control.16 {
iface MIXER
name 'headphone volume'
value 51
comment {
access 'read write'
type INTEGER
count 1
range '0 - 63'
dbmin -6300
dbmax 0
dbvalue.0 -1200
}
}
control.17 {
iface MIXER
name 'MIC1_G boost stage output mixer control'
value 3
comment {
access 'read write'
type INTEGER
count 1
range '0 - 7'
dbmin -450
dbmax 600
dbvalue.0 0
}
}
control.18 {
iface MIXER
name 'MIC1 boost AMP gain control'
value 4
comment {
access 'read write'
type INTEGER
count 1
range '0 - 7'
dbmin 0
dbmax 1400
dbvalue.0 800
}
}
control.19 {
iface MIXER
name 'MIC2 BST stage to L_R outp mixer gain'
value 3
comment {
access 'read write'
type INTEGER
count 1
range '0 - 7'
dbmin -450
dbmax 600
dbvalue.0 0
}
}
control.20 {
iface MIXER
name 'MIC2 boost AMP gain control'
value 4
comment {
access 'read write'
type INTEGER
count 1
range '0 - 7'
dbmin 0
dbmax 1400
dbvalue.0 800
}
}
control.21 {
iface MIXER
name 'LINEINL/R to L_R output mixer gain'
value 5
comment {
access 'read write'
type INTEGER
count 1
range '0 - 7'
dbmin -450
dbmax 600
dbvalue.0 300
}
}
control.22 {
iface MIXER
name 'ADC input gain control'
value 3
comment {
access 'read write'
type INTEGER
count 1
range '0 - 7'
dbmin -450
dbmax 600
dbvalue.0 0
}
}
control.23 {
iface MIXER
name 'Phoneout gain control'
value 5
comment {
access 'read write'
type INTEGER
count 1
range '0 - 7'
dbmin -450
dbmax 600
dbvalue.0 300
}
}
control.24 {
iface MIXER
name 'SRC FUCTION'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.25 {
iface MIXER
name 'I2S HUB FUNC'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.26 {
iface MIXER
name 'Phoneout Mixer MIC1 boost Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.27 {
iface MIXER
name 'Phoneout Mixer MIC2 boost Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.28 {
iface MIXER
name 'Phoneout Mixer Rout_Mixer_Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.29 {
iface MIXER
name 'Phoneout Mixer Lout_Mixer_Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.30 {
iface MIXER
name 'ADCR Mux'
value DMIC
comment {
access 'read write'
type ENUMERATED
count 1
item.0 ADC
item.1 DMIC
}
}
control.31 {
iface MIXER
name 'ADCL Mux'
value DMIC
comment {
access 'read write'
type ENUMERATED
count 1
item.0 ADC
item.1 DMIC
}
}
control.32 {
iface MIXER
name 'MIC2 SRC'
value MIC2
comment {
access 'read write'
type ENUMERATED
count 1
item.0 MIC3
item.1 MIC2
}
}
control.33 {
iface MIXER
name 'RADC input Mixer MIC1 boost Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.34 {
iface MIXER
name 'RADC input Mixer MIC2 boost Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.35 {
iface MIXER
name 'RADC input Mixer LINEINR Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.36 {
iface MIXER
name 'RADC input Mixer r_output mixer Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.37 {
iface MIXER
name 'RADC input Mixer l_output mixer Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.38 {
iface MIXER
name 'RADC input Mixer PHONINN Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.39 {
iface MIXER
name 'RADC input Mixer PHONINN-PHONINP Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.40 {
iface MIXER
name 'LADC input Mixer MIC1 boost Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.41 {
iface MIXER
name 'LADC input Mixer MIC2 boost Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.42 {
iface MIXER
name 'LADC input Mixer LINEINL Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.43 {
iface MIXER
name 'LADC input Mixer l_output mixer Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.44 {
iface MIXER
name 'LADC input Mixer r_output mixer Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.45 {
iface MIXER
name 'LADC input Mixer PHONINP Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.46 {
iface MIXER
name 'LADC input Mixer PHONINP-PHONINN Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.47 {
iface MIXER
name 'AIF3OUT Mux'
value 'AIF2 ADC left channel'
comment {
access 'read write'
type ENUMERATED
count 1
item.0 'AIF2 ADC left channel'
item.1 'AIF2 ADC right channel'
}
}
control.48 {
iface MIXER
name 'AIF2 ADR Mixer AIF1 DA0R Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.49 {
iface MIXER
name 'AIF2 ADR Mixer AIF1 DA1R Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.50 {
iface MIXER
name 'AIF2 ADR Mixer AIF2 DACL Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.51 {
iface MIXER
name 'AIF2 ADR Mixer ADCR Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.52 {
iface MIXER
name 'AIF2 ADL Mixer AIF1 DA0L Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.53 {
iface MIXER
name 'AIF2 ADL Mixer AIF1 DA1L Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.54 {
iface MIXER
name 'AIF2 ADL Mixer AIF2 DACR Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.55 {
iface MIXER
name 'AIF2 ADL Mixer ADCL Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.56 {
iface MIXER
name 'AIF2INR Mux'
value AIF2_DACR
comment {
access 'read write'
type ENUMERATED
count 1
item.0 AIF2_DACR
item.1 AIF2_DACL
item.2 SUM_AIF2DACL_AIF2DACR
item.3 AVE_AIF2DACL_AIF2DACR
}
}
control.57 {
iface MIXER
name 'AIF2INL Mux'
value AIF2_DACL
comment {
access 'read write'
type ENUMERATED
count 1
item.0 AIF2_DACL
item.1 AIF2_DACR
item.2 SUM_AIF2DACL_AIF2DACR
item.3 AVE_AIF2DACL_AIF2DACR
}
}
control.58 {
iface MIXER
name 'AIF2OUTR Mux'
value AIF2_ADCR
comment {
access 'read write'
type ENUMERATED
count 1
item.0 AIF2_ADCR
item.1 AIF2_ADCL
item.2 SUM_AIF2_ADCL_AIF2_ADCR
item.3 AVE_AIF2_ADCL_AIF2_ADCR
}
}
control.59 {
iface MIXER
name 'AIF2OUTL Mux'
value AIF2_ADCL
comment {
access 'read write'
type ENUMERATED
count 1
item.0 AIF2_ADCL
item.1 AIF2_ADCR
item.2 SUM_AIF2_ADCL_AIF2_ADCR
item.3 AVE_AIF2_ADCL_AIF2_ADCR
}
}
control.60 {
iface MIXER
name 'EAR Mux'
value DACR
comment {
access 'read write'
type ENUMERATED
count 1
item.0 DACR
item.1 DACL
item.2 'Right Analog Mixer'
item.3 'Left Analog Mixer'
}
}
control.61 {
iface MIXER
name 'SPK_L Mux'
value 'MIXEL Switch'
comment {
access 'read write'
type ENUMERATED
count 1
item.0 'MIXEL Switch'
item.1 'MIXL MIXR Switch'
}
}
control.62 {
iface MIXER
name 'SPK_R Mux'
value 'MIXER Switch'
comment {
access 'read write'
type ENUMERATED
count 1
item.0 'MIXER Switch'
item.1 'MIXR MIXL Switch'
}
}
control.63 {
iface MIXER
name 'HP_L Mux'
value 'DACL HPL Switch'
comment {
access 'read write'
type ENUMERATED
count 1
item.0 'DACL HPL Switch'
item.1 'Left Analog Mixer HPL Switch'
}
}
control.64 {
iface MIXER
name 'HP_R Mux'
value 'DACR HPR Switch'
comment {
access 'read write'
type ENUMERATED
count 1
item.0 'DACR HPR Switch'
item.1 'Right Analog Mixer HPR Switch'
}
}
control.65 {
iface MIXER
name 'Right Output Mixer DACL Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.66 {
iface MIXER
name 'Right Output Mixer DACR Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.67 {
iface MIXER
name 'Right Output Mixer LINEINR Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.68 {
iface MIXER
name 'Right Output Mixer MIC2Booststage Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.69 {
iface MIXER
name 'Right Output Mixer MIC1Booststage Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.70 {
iface MIXER
name 'Right Output Mixer PHONEINN Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.71 {
iface MIXER
name 'Right Output Mixer PHONEINN-PHONEINP Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.72 {
iface MIXER
name 'Left Output Mixer DACR Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.73 {
iface MIXER
name 'Left Output Mixer DACL Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.74 {
iface MIXER
name 'Left Output Mixer LINEINL Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.75 {
iface MIXER
name 'Left Output Mixer MIC2Booststage Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.76 {
iface MIXER
name 'Left Output Mixer MIC1Booststage Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.77 {
iface MIXER
name 'Left Output Mixer PHONEINP Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.78 {
iface MIXER
name 'Left Output Mixer PHONEINP-PHONEINN Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.79 {
iface MIXER
name 'DACR Mixer ADCR Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.80 {
iface MIXER
name 'DACR Mixer AIF2DACR Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.81 {
iface MIXER
name 'DACR Mixer AIF1DA1R Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.82 {
iface MIXER
name 'DACR Mixer AIF1DA0R Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.83 {
iface MIXER
name 'DACL Mixer ADCL Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.84 {
iface MIXER
name 'DACL Mixer AIF2DACL Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.85 {
iface MIXER
name 'DACL Mixer AIF1DA1L Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.86 {
iface MIXER
name 'DACL Mixer AIF1DA0L Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.87 {
iface MIXER
name 'AIF1 AD1R Mixer AIF2 DACR Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.88 {
iface MIXER
name 'AIF1 AD1R Mixer ADCR Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.89 {
iface MIXER
name 'AIF1 AD1L Mixer AIF2 DACL Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.90 {
iface MIXER
name 'AIF1 AD1L Mixer ADCL Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.91 {
iface MIXER
name 'AIF1 AD0R Mixer AIF1 DA0R Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.92 {
iface MIXER
name 'AIF1 AD0R Mixer AIF2 DACR Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.93 {
iface MIXER
name 'AIF1 AD0R Mixer ADCR Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.94 {
iface MIXER
name 'AIF1 AD0R Mixer AIF2 DACL Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.95 {
iface MIXER
name 'AIF1 AD0L Mixer AIF1 DA0L Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.96 {
iface MIXER
name 'AIF1 AD0L Mixer AIF2 DACL Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.97 {
iface MIXER
name 'AIF1 AD0L Mixer ADCL Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.98 {
iface MIXER
name 'AIF1 AD0L Mixer AIF2 DACR Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.99 {
iface MIXER
name 'AIF1IN1R Mux'
value AIF1_DA1R
comment {
access 'read write'
type ENUMERATED
count 1
item.0 AIF1_DA1R
item.1 AIF1_DA1L
item.2 SUM_AIF1DA1L_AIF1DA1R
item.3 AVE_AIF1DA1L_AIF1DA1R
}
}
control.100 {
iface MIXER
name 'AIF1IN1L Mux'
value AIF1_DA1L
comment {
access 'read write'
type ENUMERATED
count 1
item.0 AIF1_DA1L
item.1 AIF1_DA1R
item.2 SUM_AIF1DA1L_AIF1DA1R
item.3 AVE_AIF1DA1L_AIF1DA1R
}
}
control.101 {
iface MIXER
name 'AIF1IN0R Mux'
value AIF1_DA0R
comment {
access 'read write'
type ENUMERATED
count 1
item.0 AIF1_DA0R
item.1 AIF1_DA0L
item.2 SUM_AIF1DA0L_AIF1DA0R
item.3 AVE_AIF1DA0L_AIF1DA0R
}
}
control.102 {
iface MIXER
name 'AIF1IN0L Mux'
value AIF1_DA0L
comment {
access 'read write'
type ENUMERATED
count 1
item.0 AIF1_DA0L
item.1 AIF1_DA0R
item.2 SUM_AIF1DA0L_AIF1DA0R
item.3 AVE_AIF1DA0L_AIF1DA0R
}
}
control.103 {
iface MIXER
name 'AIF1OUT1R Mux'
value AIF1_AD1R
comment {
access 'read write'
type ENUMERATED
count 1
item.0 AIF1_AD1R
item.1 AIF1_AD1L
item.2 SUM_AIF1ADC1L_AIF1ADC1R
item.3 AVE_AIF1ADC1L_AIF1ADC1R
}
}
control.104 {
iface MIXER
name 'AIF1OUT1L Mux'
value AIF1_AD1L
comment {
access 'read write'
type ENUMERATED
count 1
item.0 AIF1_AD1L
item.1 AIF1_AD1R
item.2 SUM_AIF1ADC1L_AIF1ADC1R
item.3 AVE_AIF1ADC1L_AIF1ADC1R
}
}
control.105 {
iface MIXER
name 'AIF1OUT0R Mux'
value AIF1_AD0R
comment {
access 'read write'
type ENUMERATED
count 1
item.0 AIF1_AD0R
item.1 AIF1_AD0L
item.2 SUM_AIF1AD0L_AIF1AD0R
item.3 AVE_AIF1AD0L_AIF1AD0R
}
}
control.106 {
iface MIXER
name 'AIF1OUT0L Mux'
value AIF1_AD0L
comment {
access 'read write'
type ENUMERATED
count 1
item.0 AIF1_AD0L
item.1 AIF1_AD0R
item.2 SUM_AIF1AD0L_AIF1AD0R
item.3 AVE_AIF1AD0L_AIF1AD0R
}
}
control.107 {
iface MIXER
name 'AIF2INR Mux VIR switch aif2inr aif3'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.108 {
iface MIXER
name 'AIF2INL Mux VIR switch aif2inl aif3'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.109 {
iface MIXER
name 'AIF2INR Mux switch aif2inr aif2'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.110 {
iface MIXER
name 'AIF2INL Mux switch aif2inl aif2'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.111 {
iface MIXER
name 'External Speaker Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.112 {
iface MIXER
name 'Headphone Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.113 {
iface MIXER
name 'Earpiece Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
}thanks,
Devan
