Ideal Settings for reSpeaker 2-mic hat

Ive settled on the reSpeaker 2-mic hat as my primary input solution. Below is an image of my ALSA [Capture] settings. This is setup (I believe) for maximum sensitivity, just below levels with serious barge in issues. Im still only able to get the mic to pic up from ~2m. Anyone else use different settings?

I am using the seed studio drivers for now. When I install my next 2-mic hat I may try https://github.com/pguyot/wm8960 for comparison.

The driver really will not make a difference the advantage of the https://github.com/pguyot/wm8960 driver is that it does not lock you to a kernel version which for some is a problem.

If you are going to use the pguyot driver do a amixer contents > contents.txt as you have to do it manually and with the sheer volume of settings it can be extremely hard to work out how to get things going.

This is just optional but a bit of tidy OCD to make the 2mic index 0

sudo nano /etc/modprobe.d/alsa-base.conf

options snd_soc_simple_card index=0
options snd_bcm2835 index=1
options snd slots=snd-soc-simple-card,snd-bcm2835

I just tried that with the seeed drivers and alsamixer and amixer now doesn’t work going to uninstall drivers and use pguyot instead after getting amixer contents.

sudo ./uninstall.sh

If you want contents its here for ref

numid=12,iface=MIXER,name='Headphone Playback ZC Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=11,iface=MIXER,name='Headphone Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=127,step=0
  : values=127,127
  | dBscale-min=-121.00dB,step=1.00dB,mute=1
numid=17,iface=MIXER,name='PCM Playback -6dB Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=57,iface=MIXER,name='Mono Output Mixer Left Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=58,iface=MIXER,name='Mono Output Mixer Right Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=41,iface=MIXER,name='ADC Data Output Select'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'Left Data = Left ADC;  Right Data = Right ADC'
  ; Item #1 'Left Data = Left ADC;  Right Data = Left ADC'
  ; Item #2 'Left Data = Right ADC; Right Data = Right ADC'
  ; Item #3 'Left Data = Right ADC; Right Data = Left ADC'
  : values=0
numid=19,iface=MIXER,name='ADC High Pass Filter Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=36,iface=MIXER,name='ADC PCM Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
  : values=195,195
  | dBscale-min=-97.50dB,step=0.50dB,mute=1
numid=18,iface=MIXER,name='ADC Polarity'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'No Inversion'
  ; Item #1 'Left Inverted'
  ; Item #2 'Right Inverted'
  ; Item #3 'Stereo Inversion'
  : values=0
numid=2,iface=MIXER,name='Capture Volume ZC Switch'
  ; type=INTEGER,access=rw------,values=2,min=0,max=1,step=0
  : values=0,0
numid=3,iface=MIXER,name='Capture Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=1,iface=MIXER,name='Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=63,step=0
  : values=39,39
  | dBscale-min=-17.25dB,step=0.75dB,mute=0
numid=10,iface=MIXER,name='Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
  : values=255,255
  | dBscale-min=-127.50dB,step=0.50dB,mute=1
numid=23,iface=MIXER,name='3D Filter Lower Cut-Off'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Low'
  ; Item #1 'High'
  : values=0
numid=22,iface=MIXER,name='3D Filter Upper Cut-Off'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'High'
  ; Item #1 'Low'
  : values=0
numid=25,iface=MIXER,name='3D Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=24,iface=MIXER,name='3D Volume'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=0
numid=33,iface=MIXER,name='ALC Attack'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=2
numid=32,iface=MIXER,name='ALC Decay'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=3
numid=26,iface=MIXER,name='ALC Function'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'Off'
  ; Item #1 'Right'
  ; Item #2 'Left'
  ; Item #3 'Stereo'
  : values=0
numid=30,iface=MIXER,name='ALC Hold Time'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=0
numid=27,iface=MIXER,name='ALC Max Gain'
  ; type=INTEGER,access=rw------,values=1,min=0,max=7,step=0
  : values=7
numid=29,iface=MIXER,name='ALC Min Gain'
  ; type=INTEGER,access=rw------,values=1,min=0,max=7,step=0
  : values=0
numid=31,iface=MIXER,name='ALC Mode'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'ALC'
  ; Item #1 'Limiter'
  : values=0
numid=28,iface=MIXER,name='ALC Target'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=4
numid=21,iface=MIXER,name='DAC Deemphasis Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=42,iface=MIXER,name='DAC Mono Mix'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Stereo'
  ; Item #1 'Mono'
  : values=0
numid=20,iface=MIXER,name='DAC Polarity'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'No Inversion'
  ; Item #1 'Left Inverted'
  ; Item #2 'Right Inverted'
  ; Item #3 'Stereo Inversion'
  : values=0
numid=45,iface=MIXER,name='Left Boost Mixer LINPUT1 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=43,iface=MIXER,name='Left Boost Mixer LINPUT2 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=44,iface=MIXER,name='Left Boost Mixer LINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=9,iface=MIXER,name='Left Input Boost Mixer LINPUT1 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=3,step=0
  : values=3
  | dBrange-
    rangemin=0,,rangemax=1
      | dBscale-min=0.00dB,step=13.00dB,mute=0
    rangemin=2,,rangemax=3
      | dBscale-min=20.00dB,step=9.00dB,mute=0

numid=5,iface=MIXER,name='Left Input Boost Mixer LINPUT2 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=4,iface=MIXER,name='Left Input Boost Mixer LINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=49,iface=MIXER,name='Left Input Mixer Boost Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=53,iface=MIXER,name='Left Output Mixer Boost Bypass Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=37,iface=MIXER,name='Left Output Mixer Boost Bypass Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=52,iface=MIXER,name='Left Output Mixer LINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=38,iface=MIXER,name='Left Output Mixer LINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=51,iface=MIXER,name='Left Output Mixer PCM Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=35,iface=MIXER,name='Noise Gate Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=34,iface=MIXER,name='Noise Gate Threshold'
  ; type=INTEGER,access=rw------,values=1,min=0,max=31,step=0
  : values=0
numid=48,iface=MIXER,name='Right Boost Mixer RINPUT1 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=46,iface=MIXER,name='Right Boost Mixer RINPUT2 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=47,iface=MIXER,name='Right Boost Mixer RINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=8,iface=MIXER,name='Right Input Boost Mixer RINPUT1 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=3,step=0
  : values=3
  | dBrange-
    rangemin=0,,rangemax=1
      | dBscale-min=0.00dB,step=13.00dB,mute=0
    rangemin=2,,rangemax=3
      | dBscale-min=20.00dB,step=9.00dB,mute=0

numid=7,iface=MIXER,name='Right Input Boost Mixer RINPUT2 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=6,iface=MIXER,name='Right Input Boost Mixer RINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=50,iface=MIXER,name='Right Input Mixer Boost Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=56,iface=MIXER,name='Right Output Mixer Boost Bypass Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=39,iface=MIXER,name='Right Output Mixer Boost Bypass Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=5
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=54,iface=MIXER,name='Right Output Mixer PCM Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=55,iface=MIXER,name='Right Output Mixer RINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=40,iface=MIXER,name='Right Output Mixer RINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=2
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=16,iface=MIXER,name='Speaker AC Volume'
  ; type=INTEGER,access=rw------,values=1,min=0,max=5,step=0
  : values=5
numid=15,iface=MIXER,name='Speaker DC Volume'
  ; type=INTEGER,access=rw------,values=1,min=0,max=5,step=0
  : values=4
numid=13,iface=MIXER,name='Speaker Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=127,step=0
  : values=127,127
  | dBscale-min=-121.00dB,step=1.00dB,mute=1
numid=14,iface=MIXER,name='Speaker Playback ZC Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off

Haven’t done that before but my ocd doesn’t work with either driver unless you specify the index alsamixer -c1

But yeah turn on ALC

ALC is off there

1 Like

Did you actually turn on alc or the noisegate?
It can be easily done from the commandline too with amixer and cset.
I use a little bash script to set my baseline settings on a new install with the 2mics pi hat that work good for me:

#!/bin/bash

amixer -c "seeed2micvoicec" cset numid=1 34,34
amixer -c "seeed2micvoicec" cset numid=26 3
amixer -c "seeed2micvoicec" cset numid=27 4
amixer -c "seeed2micvoicec" cset numid=30 5
amixer -c "seeed2micvoicec" cset numid=32 5
amixer -c "seeed2micvoicec" cset numid=33 5
amixer -c "seeed2micvoicec" cset numid=34 25
amixer -c "seeed2micvoicec" cset numid=35 on
alsactl store

Just save it to the machine/pi with the hat for example as mic_settings.sh and than run it with sudo bash mic_settings.sh from the directory where you saved it. This will turn on both alc and the noise gate and change some of the settings like the max alc gain and capture volume.
You can than tune your alsa mixer settings from that baseline.
You can see all the settings by running:

sudo amixer -c "seeed2micvoicec" contents

Thanks to @rolyan_trauts who helped me figure this out initially.

1 Like

With pguyot this should set the same

amixer -c "wm8960" cset numid=1 34,34
amixer -c "wm8960" cset numid=26 3
amixer -c "wm8960" cset numid=27 4
amixer -c "wm8960" cset numid=30 5
amixer -c "wm8960" cset numid=32 5
amixer -c "wm8960" cset numid=33 5
amixer -c "wm8960" cset numid=34 25
amixer -c "wm8960" cset numid=35 on
amixer -c "wm8960" cset numid=9 3
amixer -c "wm8960" cset numid=8 3
amixer -c "wm8960" cset numid=49 on
amixer -c "wm8960" cset numid=51 on
amixer -c "wm8960" cset numid=37 0
amixer -c "wm8960" cset numid=38 0
amixer -c "wm8960" cset numid=39 5
amixer -c "wm8960" cset numid=48 on
amixer -c "wm8960" cset numid=50 on
amixer -c "wm8960" cset numid=54 on
amixer -c "wm8960" cset numid=16 5
amixer -c "wm8960" cset numid=15 4
alsactl store

Always bugged me that so much there means so little to me but https://statics.cirrus.com/pubs/proDatasheet/WM8960_v4.4.pdf if I can be bothered one day I might try to work it out :slight_smile:

Also you might want to try the compander with ffmpeg as there is similar in sox but for some reason with sox can use the input but neber figured out how to output anything but a file.
ffmpeg -ac 1 -f alsa -i plughw:2 -filter_complex "compand=attacks=0:points=-30/-900|-20/-20|0/0|20/20" -f alsa plughw:2

https://ffmpeg.org/ffmpeg-filters.html for a whole rake of filters but with the above I output to a loopback sink and then it becomes available as a standard source on the other side of plughw:2

sudo nano /etc/modules-load.d/modules.conf

append snd-aloop to that file input from the wm8960 and output to the loopback and use the loopback as your main card.

Ones of interest


Dunno why my OCD misses the chip mixer name I will maybe sort that one time, doesn’t do the same with usb sound cards.

Also if you are playing locally and swamping the mic with what you are playing.

The speexdsp here Nabaztag as a Rhasspy satellite can be at first confusing but actually works really well to anything else.

@JGKK do you fancy seeing if I got all the wm8960 settings for the pguyot driver and maybe why with that driver we miss the mixer chip name if we reorder the indexes?

Apparently, I have not turned on ALC or the noisegate! Ill give that a try. I did feel like those settings didnt do too much…I guess because they are off. Which lines in the script turn those on?

I read through the spec sheet seems like alot of the “inputs” go un-used in the 2-mic hat case.

However, ALC and noise gate seem like they could be usefull.

In an ideal world, I would have a board that outputs 300khz/32bit audio, down-samples and runs AEC, but seems like ill have to wait on that.

I ran JGKKs script (as im using seed drivers right now). It populated the right output boost bypass and right output mixer: inputR3. Is there a reason for these to be on? I hope not bc ive subsiquently turned them off…

Dunno I posted vanilla seed amixer contents in that post so I will let you scroll through and check :slight_smile:

Its 48000Hz max and think all I2s is 24bit.

https://www.hifiberry.com/shop/boards/hifiberry-dac-adc/ think 192Khz might be your max though
prob one of the iqaudio cards does the same.

Mmh shouldn’t touch those. Can you post the content of your sudo amixer -c "seeed2micvoicec" contents command.
For me at least those are not in those ids in the script.
When you run it you should also see the settings it changed.
They are set by default to those values but if you look in the settings they are actually switched off. So I would just let them be.

Unfortunately do to work and no spare 2mic right now I won’t be able to play with it till the weekend

We will let you get the nose to the grind stone :slight_smile: apols.

1 Like

Ps:

Those settings will probably give you problems too. You will need increase the noise gate with that much max alc gain and you will need to increase either the alc hold or the alc attack as otherwise you will get strange artifacts in your audio.
You should really record test audio and listen to it for clipping artifacts or problems due to alc ramping.

Running the mic_settings script again doesnt seem to change those “out settings”, not sure what happened the first time.

Ive done some testing and settled on these settings.

#!/bin/bash

amixer -c “seeed2micvoicec” cset numid=1 34,34
amixer -c “seeed2micvoicec” cset numid=26 3
amixer -c “seeed2micvoicec” cset numid=27 7
amixer -c “seeed2micvoicec” cset numid=29 0
amixer -c “seeed2micvoicec” cset numid=30 5
amixer -c “seeed2micvoicec” cset numid=32 10
amixer -c “seeed2micvoicec” cset numid=33 15
amixer -c “seeed2micvoicec” cset numid=34 30
amixer -c “seeed2micvoicec” cset numid=35 on
alsactl store

Doh I noticed what I did with my OCD index change and copy&paste error and had the snd_usb in there still so the indexes where screwy.

sudo nano /etc/modprobe.d/alsa-base.conf

options snd_soc_simple_card index=0
options snd_bcm2835 index=1
options snd slots=snd-soc-simple-card,snd-bcm2835

I edited above so no one else as dumb as me will do that again, I thought that was weird.

I don’t like the kernel freeze of the seeed2micvoicec driver especially as wm8960 shows that it is pointless so I am running on the https://github.com/pguyot/wm8960 driver but its the same essentially.

The complete current contents are.

numid=12,iface=MIXER,name='Headphone Playback ZC Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=11,iface=MIXER,name='Headphone Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=127,step=0
  : values=101,101
  | dBscale-min=-121.00dB,step=1.00dB,mute=1
numid=17,iface=MIXER,name='PCM Playback -6dB Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=57,iface=MIXER,name='Mono Output Mixer Left Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=58,iface=MIXER,name='Mono Output Mixer Right Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=41,iface=MIXER,name='ADC Data Output Select'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'Left Data = Left ADC;  Right Data = Right ADC'
  ; Item #1 'Left Data = Left ADC;  Right Data = Left ADC'
  ; Item #2 'Left Data = Right ADC; Right Data = Right ADC'
  ; Item #3 'Left Data = Right ADC; Right Data = Left ADC'
  : values=0
numid=19,iface=MIXER,name='ADC High Pass Filter Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=36,iface=MIXER,name='ADC PCM Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
  : values=195,195
  | dBscale-min=-97.50dB,step=0.50dB,mute=1
numid=18,iface=MIXER,name='ADC Polarity'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'No Inversion'
  ; Item #1 'Left Inverted'
  ; Item #2 'Right Inverted'
  ; Item #3 'Stereo Inversion'
  : values=0
numid=2,iface=MIXER,name='Capture Volume ZC Switch'
  ; type=INTEGER,access=rw------,values=2,min=0,max=1,step=0
  : values=0,0
numid=3,iface=MIXER,name='Capture Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=1,iface=MIXER,name='Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=63,step=0
  : values=34,34
  | dBscale-min=-17.25dB,step=0.75dB,mute=0
numid=10,iface=MIXER,name='Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
  : values=215,215
  | dBscale-min=-127.50dB,step=0.50dB,mute=1
numid=23,iface=MIXER,name='3D Filter Lower Cut-Off'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Low'
  ; Item #1 'High'
  : values=0
numid=22,iface=MIXER,name='3D Filter Upper Cut-Off'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'High'
  ; Item #1 'Low'
  : values=0
numid=25,iface=MIXER,name='3D Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=24,iface=MIXER,name='3D Volume'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=0
numid=33,iface=MIXER,name='ALC Attack'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=5
numid=32,iface=MIXER,name='ALC Decay'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=5
numid=26,iface=MIXER,name='ALC Function'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'Off'
  ; Item #1 'Right'
  ; Item #2 'Left'
  ; Item #3 'Stereo'
  : values=3
numid=30,iface=MIXER,name='ALC Hold Time'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=5
numid=27,iface=MIXER,name='ALC Max Gain'
  ; type=INTEGER,access=rw------,values=1,min=0,max=7,step=0
  : values=4
numid=29,iface=MIXER,name='ALC Min Gain'
  ; type=INTEGER,access=rw------,values=1,min=0,max=7,step=0
  : values=0
numid=31,iface=MIXER,name='ALC Mode'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'ALC'
  ; Item #1 'Limiter'
  : values=0
numid=28,iface=MIXER,name='ALC Target'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=4
numid=21,iface=MIXER,name='DAC Deemphasis Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=42,iface=MIXER,name='DAC Mono Mix'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Stereo'
  ; Item #1 'Mono'
  : values=0
numid=20,iface=MIXER,name='DAC Polarity'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'No Inversion'
  ; Item #1 'Left Inverted'
  ; Item #2 'Right Inverted'
  ; Item #3 'Stereo Inversion'
  : values=0
numid=45,iface=MIXER,name='Left Boost Mixer LINPUT1 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=43,iface=MIXER,name='Left Boost Mixer LINPUT2 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=44,iface=MIXER,name='Left Boost Mixer LINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=9,iface=MIXER,name='Left Input Boost Mixer LINPUT1 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=3,step=0
  : values=3
  | dBrange-
    rangemin=0,,rangemax=1
      | dBscale-min=0.00dB,step=13.00dB,mute=0
    rangemin=2,,rangemax=3
      | dBscale-min=20.00dB,step=9.00dB,mute=0

numid=5,iface=MIXER,name='Left Input Boost Mixer LINPUT2 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=4,iface=MIXER,name='Left Input Boost Mixer LINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=49,iface=MIXER,name='Left Input Mixer Boost Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=53,iface=MIXER,name='Left Output Mixer Boost Bypass Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=37,iface=MIXER,name='Left Output Mixer Boost Bypass Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=52,iface=MIXER,name='Left Output Mixer LINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=38,iface=MIXER,name='Left Output Mixer LINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=51,iface=MIXER,name='Left Output Mixer PCM Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=35,iface=MIXER,name='Noise Gate Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=34,iface=MIXER,name='Noise Gate Threshold'
  ; type=INTEGER,access=rw------,values=1,min=0,max=31,step=0
  : values=25
numid=48,iface=MIXER,name='Right Boost Mixer RINPUT1 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=46,iface=MIXER,name='Right Boost Mixer RINPUT2 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=47,iface=MIXER,name='Right Boost Mixer RINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=8,iface=MIXER,name='Right Input Boost Mixer RINPUT1 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=3,step=0
  : values=3
  | dBrange-
    rangemin=0,,rangemax=1
      | dBscale-min=0.00dB,step=13.00dB,mute=0
    rangemin=2,,rangemax=3
      | dBscale-min=20.00dB,step=9.00dB,mute=0

numid=7,iface=MIXER,name='Right Input Boost Mixer RINPUT2 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=6,iface=MIXER,name='Right Input Boost Mixer RINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=50,iface=MIXER,name='Right Input Mixer Boost Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=56,iface=MIXER,name='Right Output Mixer Boost Bypass Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=39,iface=MIXER,name='Right Output Mixer Boost Bypass Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=5
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=54,iface=MIXER,name='Right Output Mixer PCM Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=55,iface=MIXER,name='Right Output Mixer RINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=40,iface=MIXER,name='Right Output Mixer RINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=2
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=16,iface=MIXER,name='Speaker AC Volume'
  ; type=INTEGER,access=rw------,values=1,min=0,max=5,step=0
  : values=5
numid=15,iface=MIXER,name='Speaker DC Volume'
  ; type=INTEGER,access=rw------,values=1,min=0,max=5,step=0
  : values=4
numid=13,iface=MIXER,name='Speaker Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=127,step=0
  : values=101,101
  | dBscale-min=-121.00dB,step=1.00dB,mute=1
numid=14,iface=MIXER,name='Speaker Playback ZC Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off

With the above @3m (what Amazon says is the start of far field) sort of normal TV volume aprrox 60db
https://drive.google.com/open?id=1JR5FjA5_bp97qHbcbTpyyOxyJQRrwjhe

with a /etc/asound.conf

pcm.array {
 type hw
 card wm8960
}

pcm.cap {
 type plug
 slave {
   pcm "array"
   channels 2
   }
 route_policy sum
}

arecord -Dcap -r16000 -fS16_LE -c1 2mic.wav

I noticed from the image attached the volumes where different & ALC so changed.

numid=12,iface=MIXER,name='Headphone Playback ZC Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=11,iface=MIXER,name='Headphone Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=127,step=0
  : values=101,101
  | dBscale-min=-121.00dB,step=1.00dB,mute=1
numid=17,iface=MIXER,name='PCM Playback -6dB Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=57,iface=MIXER,name='Mono Output Mixer Left Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=58,iface=MIXER,name='Mono Output Mixer Right Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=41,iface=MIXER,name='ADC Data Output Select'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'Left Data = Left ADC;  Right Data = Right ADC'
  ; Item #1 'Left Data = Left ADC;  Right Data = Left ADC'
  ; Item #2 'Left Data = Right ADC; Right Data = Right ADC'
  ; Item #3 'Left Data = Right ADC; Right Data = Left ADC'
  : values=0
numid=19,iface=MIXER,name='ADC High Pass Filter Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=36,iface=MIXER,name='ADC PCM Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
  : values=195,195
  | dBscale-min=-97.50dB,step=0.50dB,mute=1
numid=18,iface=MIXER,name='ADC Polarity'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'No Inversion'
  ; Item #1 'Left Inverted'
  ; Item #2 'Right Inverted'
  ; Item #3 'Stereo Inversion'
  : values=0
numid=2,iface=MIXER,name='Capture Volume ZC Switch'
  ; type=INTEGER,access=rw------,values=2,min=0,max=1,step=0
  : values=0,0
numid=3,iface=MIXER,name='Capture Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=1,iface=MIXER,name='Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=63,step=0
  : values=35,35
  | dBscale-min=-17.25dB,step=0.75dB,mute=0
numid=10,iface=MIXER,name='Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
  : values=215,215
  | dBscale-min=-127.50dB,step=0.50dB,mute=1
numid=23,iface=MIXER,name='3D Filter Lower Cut-Off'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Low'
  ; Item #1 'High'
  : values=0
numid=22,iface=MIXER,name='3D Filter Upper Cut-Off'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'High'
  ; Item #1 'Low'
  : values=0
numid=25,iface=MIXER,name='3D Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=24,iface=MIXER,name='3D Volume'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=0
numid=33,iface=MIXER,name='ALC Attack'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=15
numid=32,iface=MIXER,name='ALC Decay'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=10
numid=26,iface=MIXER,name='ALC Function'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'Off'
  ; Item #1 'Right'
  ; Item #2 'Left'
  ; Item #3 'Stereo'
  : values=3
numid=30,iface=MIXER,name='ALC Hold Time'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=6
numid=27,iface=MIXER,name='ALC Max Gain'
  ; type=INTEGER,access=rw------,values=1,min=0,max=7,step=0
  : values=7
numid=29,iface=MIXER,name='ALC Min Gain'
  ; type=INTEGER,access=rw------,values=1,min=0,max=7,step=0
  : values=0
numid=31,iface=MIXER,name='ALC Mode'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'ALC'
  ; Item #1 'Limiter'
  : values=0
numid=28,iface=MIXER,name='ALC Target'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=12
numid=21,iface=MIXER,name='DAC Deemphasis Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=42,iface=MIXER,name='DAC Mono Mix'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Stereo'
  ; Item #1 'Mono'
  : values=0
numid=20,iface=MIXER,name='DAC Polarity'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'No Inversion'
  ; Item #1 'Left Inverted'
  ; Item #2 'Right Inverted'
  ; Item #3 'Stereo Inversion'
  : values=0
numid=45,iface=MIXER,name='Left Boost Mixer LINPUT1 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=43,iface=MIXER,name='Left Boost Mixer LINPUT2 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=44,iface=MIXER,name='Left Boost Mixer LINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=9,iface=MIXER,name='Left Input Boost Mixer LINPUT1 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=3,step=0
  : values=3
  | dBrange-
    rangemin=0,,rangemax=1
      | dBscale-min=0.00dB,step=13.00dB,mute=0
    rangemin=2,,rangemax=3
      | dBscale-min=20.00dB,step=9.00dB,mute=0

numid=5,iface=MIXER,name='Left Input Boost Mixer LINPUT2 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=4,iface=MIXER,name='Left Input Boost Mixer LINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=49,iface=MIXER,name='Left Input Mixer Boost Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=53,iface=MIXER,name='Left Output Mixer Boost Bypass Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=37,iface=MIXER,name='Left Output Mixer Boost Bypass Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=52,iface=MIXER,name='Left Output Mixer LINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=38,iface=MIXER,name='Left Output Mixer LINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=51,iface=MIXER,name='Left Output Mixer PCM Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=35,iface=MIXER,name='Noise Gate Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=34,iface=MIXER,name='Noise Gate Threshold'
  ; type=INTEGER,access=rw------,values=1,min=0,max=31,step=0
  : values=25
numid=48,iface=MIXER,name='Right Boost Mixer RINPUT1 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=46,iface=MIXER,name='Right Boost Mixer RINPUT2 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=47,iface=MIXER,name='Right Boost Mixer RINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=8,iface=MIXER,name='Right Input Boost Mixer RINPUT1 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=3,step=0
  : values=3
  | dBrange-
    rangemin=0,,rangemax=1
      | dBscale-min=0.00dB,step=13.00dB,mute=0
    rangemin=2,,rangemax=3
      | dBscale-min=20.00dB,step=9.00dB,mute=0

numid=7,iface=MIXER,name='Right Input Boost Mixer RINPUT2 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=6,iface=MIXER,name='Right Input Boost Mixer RINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=50,iface=MIXER,name='Right Input Mixer Boost Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=56,iface=MIXER,name='Right Output Mixer Boost Bypass Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=39,iface=MIXER,name='Right Output Mixer Boost Bypass Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=5
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=54,iface=MIXER,name='Right Output Mixer PCM Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=55,iface=MIXER,name='Right Output Mixer RINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=40,iface=MIXER,name='Right Output Mixer RINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=2
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=16,iface=MIXER,name='Speaker AC Volume'
  ; type=INTEGER,access=rw------,values=1,min=0,max=5,step=0
  : values=5
numid=15,iface=MIXER,name='Speaker DC Volume'
  ; type=INTEGER,access=rw------,values=1,min=0,max=5,step=0
  : values=4
numid=13,iface=MIXER,name='Speaker Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=127,step=0
  : values=101,101
  | dBscale-min=-121.00dB,step=1.00dB,mute=1
numid=14,iface=MIXER,name='Speaker Playback ZC Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off

https://drive.google.com/open?id=1kBzhdSJKS4YlaRUbMoy5jiHDdQn4jUD8

1 Like