Re: [Alsa-user] New user with an ICUSBAUDIO7D
No, that didn't actually work either. I picked up some cheap (10/$1.00) electrets on Aliexpress that are a CZN-15e https://www.sunrom.com/p/czn-15e-omnidirectional-electret-condenser-microphone-9x7mm-with-pins-9767-capacitive-sensitivity-58 (just a data source) Expendable microphones that aren't bad. Got one working on prototyping board, too much hum. On pad-per-hole breadboard I set another up with a 1 transistor preamp then another transistor as emitter follower to get the output impedance down to about 1000 ohms. With that I can get signals of about 1 volt peak-peak as checked on an analog oscilloscope. But this is now too much to feed into a microphone input so I want to use a line input. And that brings me to trying to figure out Alsa syntax again. I don't remember what I might have changed in some file somewhere to get it using the microphone input on the USB sound card. It seems probably smarter to specify devices via command lines to arecord since I have multiple microphones, sound cards, computers. This worked: arecord -f S16_LE --channels=2 --device="plughw:2,0,0" --rate=44100 junk.wav But for the micropbhone input, now I want the line input. amixer -c 2 scontrols Simple mixer control 'Speaker',0 Simple mixer control 'PCM',0 Simple mixer control 'PCM Capture Source',0 Simple mixer control 'Line',0 Simple mixer control 'Mic',0 Simple mixer control 'IEC958 In',0 (Why are they all 0?) I think a 1-line script to amixer followed by 1 line to arecord is what I want. I'd be more comfortable with numbers in binary or hex than all this parsing of prose. On 7/20/20, Alan Corey wrote: > OK, > arecord -f S16_LE --channels=2 --device="hw:2,0" --rate=44100 junk.wav > does work. It's not pretty, I have to amplify in Audacity about 40 > db. My coupling capacitor seems to be leaky, I see DC on the waveform > and I get some motorboating. But I did it twice and both times > worked. What I did for a signal was just wet a finger and touch the > center conductor of the soundcard input, which captures hum. I did a > pattern of touching it and not touching it, what I see on the screen > roughly matches what I did. So I need to build more amplification. > > On 7/20/20, chris hermansen wrote: >> Alan and list, >> >> On Mon, Jul 20, 2020 at 9:45 AM Alan Corey wrote: >> >>> When I do >>> arecord -f S16_LE --channels=2 --device="hw:2,0" --rate=44100 >>> junk.wav >>> >>> It doesn't complain but the recording is silence. Something may be >>> turned down or off in the mixer. Or I'm recording the wrong >>> subdevice. hw:2,1 and hw:2,2 don't seem to be found. If I amplify >>> (40 db) in Audacity there's not really anything there. >>> >> >> Alan have you tried running "alsamixer" in a terminal window and >> inspecting >> the settings? >> >>> >>> I'm using a bare electret cartridge with a 3.9 k resistor from 4.2 >>> volts in from a lithium cell, and a 1 MFD coupling cap. I'd expect to >>> see something when I tap on it, but nothing. >>> >> >> Do you have a voltmeter to watch what happens on the output of the >> capacitor and ground when you tap? >> >>> >>> >>> On 7/20/20, Alan Corey wrote: >>> > Hmm, none of these are 1 channel. I do want 2 channels but so far >>> > I've got 1 electret cartridge on prototype board trying to figure out >>> > how much amplification I need. >>> > >>> > USB Sound Device at usb-3f98.usb-1.5, full speed : USB Audio >>> > >>> > Playback: >>> > Status: Stop >>> > Interface 1 >>> > Altset 1 >>> > Format: S16_LE >>> > Channels: 8 >>> > Endpoint: 6 OUT (ADAPTIVE) >>> > Rates: 44100, 48000 >>> > Interface 1 >>> > Altset 2 >>> > Format: S16_LE >>> > Channels: 2 >>> > Endpoint: 6 OUT (ADAPTIVE) >>> > Rates: 44100, 48000 >>> > Interface 1 >>> > Altset 3 >>> > Format: S16_LE >>> > Channels: 4 >>> > Endpoint: 6 OUT (ADAPTIVE) >>> > Rates: 44100, 48000 >>> > Interface 1 >>> > Altset 4 >>> > Format: S16_LE >>> > Channels: 6 >>> > Endpoint: 6 OUT (ADAPTIVE) >>> > Rates: 44100, 48000 >>> > Interface 1 >>> > Altset 5 >>> > Format: S16_LE >>> > Channels: 2 >>> > Endpoint: 6 OUT (ADAPTIVE) >>> > Rates: 96000 >>> > >>> > Capture: >>> > Status: Stop >>> > Interface 2 >>> > Altset 1 >>> > Format: S16_LE >>> > Channels: 2 >>> > Endpoint: 5 IN (ASYNC) >>> > Rates: 44100, 48000 >>> > >>> > >>> > >>> > On 7/20/20, Clemens Ladisch via Alsa-user >>> > wrote: >>> >> Alan Corey wrote: >>> >>> arecord -f S16_LE -d 10 -r 16000 --channels=1 --device="hw:2,0" >>> >>> /tmp/test-mic.wav >>> >>> Recording WAVE '/tmp/test-mic.wav' : Signed 16 bit Little Endian, >>> >>> Rate >>> >>> 16000 Hz, Mono >>> >>> arecord: set_params:1345: Channels count non available >>> >> >>> >> I suspect recording always uses channels. >>> >> Please show the contents of /proc/asound/card2/stream0. >>> >> >>> >> >>> >> Regards, >>> >> Clemens >>> >> >>> >> >>> >>
Re: [Alsa-user] New user with an ICUSBAUDIO7D
OK, arecord -f S16_LE --channels=2 --device="hw:2,0" --rate=44100 junk.wav does work. It's not pretty, I have to amplify in Audacity about 40 db. My coupling capacitor seems to be leaky, I see DC on the waveform and I get some motorboating. But I did it twice and both times worked. What I did for a signal was just wet a finger and touch the center conductor of the soundcard input, which captures hum. I did a pattern of touching it and not touching it, what I see on the screen roughly matches what I did. So I need to build more amplification. On 7/20/20, chris hermansen wrote: > Alan and list, > > On Mon, Jul 20, 2020 at 9:45 AM Alan Corey wrote: > >> When I do >> arecord -f S16_LE --channels=2 --device="hw:2,0" --rate=44100 junk.wav >> >> It doesn't complain but the recording is silence. Something may be >> turned down or off in the mixer. Or I'm recording the wrong >> subdevice. hw:2,1 and hw:2,2 don't seem to be found. If I amplify >> (40 db) in Audacity there's not really anything there. >> > > Alan have you tried running "alsamixer" in a terminal window and inspecting > the settings? > >> >> I'm using a bare electret cartridge with a 3.9 k resistor from 4.2 >> volts in from a lithium cell, and a 1 MFD coupling cap. I'd expect to >> see something when I tap on it, but nothing. >> > > Do you have a voltmeter to watch what happens on the output of the > capacitor and ground when you tap? > >> >> >> On 7/20/20, Alan Corey wrote: >> > Hmm, none of these are 1 channel. I do want 2 channels but so far >> > I've got 1 electret cartridge on prototype board trying to figure out >> > how much amplification I need. >> > >> > USB Sound Device at usb-3f98.usb-1.5, full speed : USB Audio >> > >> > Playback: >> > Status: Stop >> > Interface 1 >> > Altset 1 >> > Format: S16_LE >> > Channels: 8 >> > Endpoint: 6 OUT (ADAPTIVE) >> > Rates: 44100, 48000 >> > Interface 1 >> > Altset 2 >> > Format: S16_LE >> > Channels: 2 >> > Endpoint: 6 OUT (ADAPTIVE) >> > Rates: 44100, 48000 >> > Interface 1 >> > Altset 3 >> > Format: S16_LE >> > Channels: 4 >> > Endpoint: 6 OUT (ADAPTIVE) >> > Rates: 44100, 48000 >> > Interface 1 >> > Altset 4 >> > Format: S16_LE >> > Channels: 6 >> > Endpoint: 6 OUT (ADAPTIVE) >> > Rates: 44100, 48000 >> > Interface 1 >> > Altset 5 >> > Format: S16_LE >> > Channels: 2 >> > Endpoint: 6 OUT (ADAPTIVE) >> > Rates: 96000 >> > >> > Capture: >> > Status: Stop >> > Interface 2 >> > Altset 1 >> > Format: S16_LE >> > Channels: 2 >> > Endpoint: 5 IN (ASYNC) >> > Rates: 44100, 48000 >> > >> > >> > >> > On 7/20/20, Clemens Ladisch via Alsa-user >> > wrote: >> >> Alan Corey wrote: >> >>> arecord -f S16_LE -d 10 -r 16000 --channels=1 --device="hw:2,0" >> >>> /tmp/test-mic.wav >> >>> Recording WAVE '/tmp/test-mic.wav' : Signed 16 bit Little Endian, >> >>> Rate >> >>> 16000 Hz, Mono >> >>> arecord: set_params:1345: Channels count non available >> >> >> >> I suspect recording always uses channels. >> >> Please show the contents of /proc/asound/card2/stream0. >> >> >> >> >> >> Regards, >> >> Clemens >> >> >> >> >> >> ___ >> >> Alsa-user mailing list >> >> Alsa-user@lists.sourceforge.net >> >> https://lists.sourceforge.net/lists/listinfo/alsa-user >> >> >> > >> > >> > -- >> > - >> > No, I won't call it "climate change", do you have a "reality problem"? >> > - >> > AB1JX >> > Cities are cages built to contain excess people and keep them from >> > cluttering up nature. >> > Impeach Impeach Impeach Impeach Impeach Impeach Impeach Impeach >> > >> >> >> -- >> - >> No, I won't call it "climate change", do you have a "reality problem"? - >> AB1JX >> Cities are cages built to contain excess people and keep them from >> cluttering up nature. >> Impeach Impeach Impeach Impeach Impeach Impeach Impeach Impeach >> >> >> ___ >> Alsa-user mailing list >> Alsa-user@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/alsa-user >> > > > -- > Chris Hermansen · clhermansen "at" gmail "dot" com > > C'est ma façon de parler. > -- - No, I won't call it "climate change", do you have a "reality problem"? - AB1JX Cities are cages built to contain excess people and keep them from cluttering up nature. Impeach Impeach Impeach Impeach Impeach Impeach Impeach Impeach ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] New user with an ICUSBAUDIO7D
Alan and list, On Mon, Jul 20, 2020 at 9:45 AM Alan Corey wrote: > When I do > arecord -f S16_LE --channels=2 --device="hw:2,0" --rate=44100 junk.wav > > It doesn't complain but the recording is silence. Something may be > turned down or off in the mixer. Or I'm recording the wrong > subdevice. hw:2,1 and hw:2,2 don't seem to be found. If I amplify > (40 db) in Audacity there's not really anything there. > Alan have you tried running "alsamixer" in a terminal window and inspecting the settings? > > I'm using a bare electret cartridge with a 3.9 k resistor from 4.2 > volts in from a lithium cell, and a 1 MFD coupling cap. I'd expect to > see something when I tap on it, but nothing. > Do you have a voltmeter to watch what happens on the output of the capacitor and ground when you tap? > > > On 7/20/20, Alan Corey wrote: > > Hmm, none of these are 1 channel. I do want 2 channels but so far > > I've got 1 electret cartridge on prototype board trying to figure out > > how much amplification I need. > > > > USB Sound Device at usb-3f98.usb-1.5, full speed : USB Audio > > > > Playback: > > Status: Stop > > Interface 1 > > Altset 1 > > Format: S16_LE > > Channels: 8 > > Endpoint: 6 OUT (ADAPTIVE) > > Rates: 44100, 48000 > > Interface 1 > > Altset 2 > > Format: S16_LE > > Channels: 2 > > Endpoint: 6 OUT (ADAPTIVE) > > Rates: 44100, 48000 > > Interface 1 > > Altset 3 > > Format: S16_LE > > Channels: 4 > > Endpoint: 6 OUT (ADAPTIVE) > > Rates: 44100, 48000 > > Interface 1 > > Altset 4 > > Format: S16_LE > > Channels: 6 > > Endpoint: 6 OUT (ADAPTIVE) > > Rates: 44100, 48000 > > Interface 1 > > Altset 5 > > Format: S16_LE > > Channels: 2 > > Endpoint: 6 OUT (ADAPTIVE) > > Rates: 96000 > > > > Capture: > > Status: Stop > > Interface 2 > > Altset 1 > > Format: S16_LE > > Channels: 2 > > Endpoint: 5 IN (ASYNC) > > Rates: 44100, 48000 > > > > > > > > On 7/20/20, Clemens Ladisch via Alsa-user > > wrote: > >> Alan Corey wrote: > >>> arecord -f S16_LE -d 10 -r 16000 --channels=1 --device="hw:2,0" > >>> /tmp/test-mic.wav > >>> Recording WAVE '/tmp/test-mic.wav' : Signed 16 bit Little Endian, Rate > >>> 16000 Hz, Mono > >>> arecord: set_params:1345: Channels count non available > >> > >> I suspect recording always uses channels. > >> Please show the contents of /proc/asound/card2/stream0. > >> > >> > >> Regards, > >> Clemens > >> > >> > >> ___ > >> Alsa-user mailing list > >> Alsa-user@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/alsa-user > >> > > > > > > -- > > - > > No, I won't call it "climate change", do you have a "reality problem"? - > > AB1JX > > Cities are cages built to contain excess people and keep them from > > cluttering up nature. > > Impeach Impeach Impeach Impeach Impeach Impeach Impeach Impeach > > > > > -- > - > No, I won't call it "climate change", do you have a "reality problem"? - > AB1JX > Cities are cages built to contain excess people and keep them from > cluttering up nature. > Impeach Impeach Impeach Impeach Impeach Impeach Impeach Impeach > > > ___ > Alsa-user mailing list > Alsa-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/alsa-user > -- Chris Hermansen · clhermansen "at" gmail "dot" com C'est ma façon de parler. ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] New user with an ICUSBAUDIO7D
When I do arecord -f S16_LE --channels=2 --device="hw:2,0" --rate=44100 junk.wav It doesn't complain but the recording is silence. Something may be turned down or off in the mixer. Or I'm recording the wrong subdevice. hw:2,1 and hw:2,2 don't seem to be found. If I amplify (40 db) in Audacity there's not really anything there. I'm using a bare electret cartridge with a 3.9 k resistor from 4.2 volts in from a lithium cell, and a 1 MFD coupling cap. I'd expect to see something when I tap on it, but nothing. On 7/20/20, Alan Corey wrote: > Hmm, none of these are 1 channel. I do want 2 channels but so far > I've got 1 electret cartridge on prototype board trying to figure out > how much amplification I need. > > USB Sound Device at usb-3f98.usb-1.5, full speed : USB Audio > > Playback: > Status: Stop > Interface 1 > Altset 1 > Format: S16_LE > Channels: 8 > Endpoint: 6 OUT (ADAPTIVE) > Rates: 44100, 48000 > Interface 1 > Altset 2 > Format: S16_LE > Channels: 2 > Endpoint: 6 OUT (ADAPTIVE) > Rates: 44100, 48000 > Interface 1 > Altset 3 > Format: S16_LE > Channels: 4 > Endpoint: 6 OUT (ADAPTIVE) > Rates: 44100, 48000 > Interface 1 > Altset 4 > Format: S16_LE > Channels: 6 > Endpoint: 6 OUT (ADAPTIVE) > Rates: 44100, 48000 > Interface 1 > Altset 5 > Format: S16_LE > Channels: 2 > Endpoint: 6 OUT (ADAPTIVE) > Rates: 96000 > > Capture: > Status: Stop > Interface 2 > Altset 1 > Format: S16_LE > Channels: 2 > Endpoint: 5 IN (ASYNC) > Rates: 44100, 48000 > > > > On 7/20/20, Clemens Ladisch via Alsa-user > wrote: >> Alan Corey wrote: >>> arecord -f S16_LE -d 10 -r 16000 --channels=1 --device="hw:2,0" >>> /tmp/test-mic.wav >>> Recording WAVE '/tmp/test-mic.wav' : Signed 16 bit Little Endian, Rate >>> 16000 Hz, Mono >>> arecord: set_params:1345: Channels count non available >> >> I suspect recording always uses channels. >> Please show the contents of /proc/asound/card2/stream0. >> >> >> Regards, >> Clemens >> >> >> ___ >> Alsa-user mailing list >> Alsa-user@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/alsa-user >> > > > -- > - > No, I won't call it "climate change", do you have a "reality problem"? - > AB1JX > Cities are cages built to contain excess people and keep them from > cluttering up nature. > Impeach Impeach Impeach Impeach Impeach Impeach Impeach Impeach > -- - No, I won't call it "climate change", do you have a "reality problem"? - AB1JX Cities are cages built to contain excess people and keep them from cluttering up nature. Impeach Impeach Impeach Impeach Impeach Impeach Impeach Impeach ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] New user with an ICUSBAUDIO7D
Hmm, none of these are 1 channel. I do want 2 channels but so far I've got 1 electret cartridge on prototype board trying to figure out how much amplification I need. USB Sound Device at usb-3f98.usb-1.5, full speed : USB Audio Playback: Status: Stop Interface 1 Altset 1 Format: S16_LE Channels: 8 Endpoint: 6 OUT (ADAPTIVE) Rates: 44100, 48000 Interface 1 Altset 2 Format: S16_LE Channels: 2 Endpoint: 6 OUT (ADAPTIVE) Rates: 44100, 48000 Interface 1 Altset 3 Format: S16_LE Channels: 4 Endpoint: 6 OUT (ADAPTIVE) Rates: 44100, 48000 Interface 1 Altset 4 Format: S16_LE Channels: 6 Endpoint: 6 OUT (ADAPTIVE) Rates: 44100, 48000 Interface 1 Altset 5 Format: S16_LE Channels: 2 Endpoint: 6 OUT (ADAPTIVE) Rates: 96000 Capture: Status: Stop Interface 2 Altset 1 Format: S16_LE Channels: 2 Endpoint: 5 IN (ASYNC) Rates: 44100, 48000 On 7/20/20, Clemens Ladisch via Alsa-user wrote: > Alan Corey wrote: >> arecord -f S16_LE -d 10 -r 16000 --channels=1 --device="hw:2,0" >> /tmp/test-mic.wav >> Recording WAVE '/tmp/test-mic.wav' : Signed 16 bit Little Endian, Rate >> 16000 Hz, Mono >> arecord: set_params:1345: Channels count non available > > I suspect recording always uses channels. > Please show the contents of /proc/asound/card2/stream0. > > > Regards, > Clemens > > > ___ > Alsa-user mailing list > Alsa-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/alsa-user > -- - No, I won't call it "climate change", do you have a "reality problem"? - AB1JX Cities are cages built to contain excess people and keep them from cluttering up nature. Impeach Impeach Impeach Impeach Impeach Impeach Impeach Impeach ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] New user with an ICUSBAUDIO7D
Alan Corey wrote: > arecord -f S16_LE -d 10 -r 16000 --channels=1 --device="hw:2,0" > /tmp/test-mic.wav > Recording WAVE '/tmp/test-mic.wav' : Signed 16 bit Little Endian, Rate 16000 > Hz, Mono > arecord: set_params:1345: Channels count non available I suspect recording always uses channels. Please show the contents of /proc/asound/card2/stream0. Regards, Clemens ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] New user with an ICUSBAUDIO7D
Nope. hadn't seen it. The last thing I tried was arecord -f S16_LE -d 10 -r 16000 --channels=1 --device="hw:2,0" /tmp/test-mic.wav Recording WAVE '/tmp/test-mic.wav' : Signed 16 bit Little Endian, Rate 16000 Hz, Mono arecord: set_params:1345: Channels count non available yet hw:2,1 (or ,2 or ,3) gives audio open error: No such file or directory So to adust a mixer I'd use amixer then alsactl store? amixer -c 2 contents gives: numid=17,iface=CARD,name='Keep Interface' ; type=BOOLEAN,access=rw--,values=1 : values=off numid=16,iface=MIXER,name='PCM Capture Source' ; type=ENUMERATED,access=rw--,values=1,items=4 ; Item #0 'Mic' ; Item #1 'Line' ; Item #2 'IEC958 In' ; Item #3 'Mixer' : values=0 numid=14,iface=MIXER,name='PCM Capture Switch' ; type=BOOLEAN,access=rw--,values=1 : values=on numid=15,iface=MIXER,name='PCM Capture Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=6928,step=0 : values=4096,4096 | dBminmax-min=-16.00dB,max=11.06dB numid=5,iface=MIXER,name='Line Playback Switch' ; type=BOOLEAN,access=rw--,values=1 : values=off numid=6,iface=MIXER,name='Line Playback Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=8065,step=0 : values=6144,6144 | dBminmax-min=-24.00dB,max=7.50dB numid=11,iface=MIXER,name='Line Capture Switch' ; type=BOOLEAN,access=rw--,values=1 : values=on numid=12,iface=MIXER,name='Line Capture Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=6928,step=0 : values=4096,4096 | dBminmax-min=-16.00dB,max=11.06dB numid=3,iface=MIXER,name='Mic Playback Switch' ; type=BOOLEAN,access=rw--,values=1 : values=off numid=4,iface=MIXER,name='Mic Playback Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=8065,step=0 : values=6144,6144 | dBminmax-min=-24.00dB,max=7.50dB numid=9,iface=MIXER,name='Mic Capture Switch' ; type=BOOLEAN,access=rw--,values=1 : values=on numid=10,iface=MIXER,name='Mic Capture Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=6928,step=0 : values=4096,4096 | dBminmax-min=-16.00dB,max=11.06dB numid=13,iface=MIXER,name='IEC958 In Capture Switch' ; type=BOOLEAN,access=rw--,values=1 : values=on numid=7,iface=MIXER,name='Speaker Playback Switch' ; type=BOOLEAN,access=rw--,values=1 : values=on numid=8,iface=MIXER,name='Speaker Playback Volume' ; type=INTEGER,access=rw---R--,values=8,min=0,max=197,step=0 : values=90,90,90,90,90,90,90,90 | dBminmax-min=-36.93dB,max=0.00dB numid=2,iface=PCM,name='Capture Channel Map' ; type=INTEGER,access=rR--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR numid=1,iface=PCM,name='Playback Channel Map' ; type=INTEGER,access=rR--,values=8,min=0,max=36,step=0 : values=0,0,0,0,0,0,0,0 | container | chmap-fixed=FL,FR,FC,LFE,SL,SR,SL,SR | chmap-fixed=FL,FR | chmap-fixed=FL,FR,FC,LFE | chmap-fixed=FL,FR,FC,LFE,SL,SR But how do I access that stuff? arecord doesn't have access to the mixers, right? On 7/19/20, chris hermansen wrote: > Alan and list > > On Sun, Jul 19, 2020, 10:26 Alan Corey wrote: > >> I have a StarTech ICUSBAUDIO7D >> >> https://www.startech.com/Cards-Adapters/Sound/USB-Audio/USB-7-Channel-Audio-Adapter-with-SPDIF~ICUSBAUDIO7D >> which I want to use the mic input on. Mostly I'm vague on the Alsa >> syntax for specifying devices and especially subdevices. >> > > Have you reviewed this? > > https://learn.adafruit.com/usb-audio-cards-with-a-raspberry-pi/recording-audio > -- - No, I won't call it "climate change", do you have a "reality problem"? - AB1JX Cities are cages built to contain excess people and keep them from cluttering up nature. Impeach Impeach Impeach Impeach Impeach Impeach Impeach Impeach ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] New user with an ICUSBAUDIO7D
Alan and list On Sun, Jul 19, 2020, 10:26 Alan Corey wrote: > I have a StarTech ICUSBAUDIO7D > > https://www.startech.com/Cards-Adapters/Sound/USB-Audio/USB-7-Channel-Audio-Adapter-with-SPDIF~ICUSBAUDIO7D > which I want to use the mic input on. Mostly I'm vague on the Alsa > syntax for specifying devices and especially subdevices. > Have you reviewed this? https://learn.adafruit.com/usb-audio-cards-with-a-raspberry-pi/recording-audio ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
[Alsa-user] New user with an ICUSBAUDIO7D
I have a StarTech ICUSBAUDIO7D https://www.startech.com/Cards-Adapters/Sound/USB-Audio/USB-7-Channel-Audio-Adapter-with-SPDIF~ICUSBAUDIO7D which I want to use the mic input on. Mostly I'm vague on the Alsa syntax for specifying devices and especially subdevices. My alsa-info output is at http://alsa-project.org/db/?f=d225395a5fefc44d18a4b055d35d630450113660 I bought this USB audio card originally to use with a Raspberry Pi and a guitar, now I'd like to record some nature sounds with electret mikes. I've never gotten recording with it to work at all, playback does work well. Using Alsa 1.0.27+1 under Raspbian Buster. -- - No, I won't call it "climate change", do you have a "reality problem"? - AB1JX Cities are cages built to contain excess people and keep them from cluttering up nature. Impeach Impeach Impeach Impeach Impeach Impeach Impeach Impeach ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
