Re: what is still missing?

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Since you have a problem with 'arecord', it's an ALSA issue - isn't it ? Ask the ALSA users list first.


On 11/02/2023 11:40, Matti Riikari wrote:
I've ended up in dead end. Recording from default input produces just white noise. Everything is seemengly correct, but what is still missing?

I have a Deltaco UAC-03 USB sound card.

set-default-source alsa_input.usb-GeneralPlus_USB_Audio_Device-00.mono-fallback

pacmd list-sources | grep -e 'index:' -e device.string -e 'name:'

* index: 5
    name: <alsa_input.usb-GeneralPlus_USB_Audio_Device-00.mono-fallback>
        device.string = "hw:2"

parecord --record test.wav

When recording, pacmd list-sources shows the correct  source is activated:
Source #5
    State: RUNNING
    Name: alsa_input.usb-GeneralPlus_USB_Audio_Device-00.mono-fallback
    Description: USB Audio Device Mono

But the sound file is an empty recording. Checked with alsamixer mic is not muted.

Empty recording also by
parecord --record --device="alsa_input.usb-GeneralPlus_USB_Audio_Device-00.mono-fallback" test.wav

parecord --record --device="alsa_input.usb-GeneralPlus_USB_Audio_Device-00.mono-fallback" --volume=40000 --channels=1 test.wav

Same for
arecord test.wav

arecord --device="hw:2" test.wav

vumeter switch shows the truth, nothing is coming in. What am I missing?
arecord --vumeter=mono test.wav
Recording WAVE 'out.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Mono
#+                                                 | 00%

Thanks for any help to solve this.

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