[PLUG] Microphones for audio recording

[Rich Shepard]

On Fri, 12 Feb 2021, Rich Shepard wrote:

> What might be the reason for this? My understanding is that the Yamaha has
> a condenser mic as does the AudioTechnica.

Enough futzing; I need to record some videos for my business so I'll save
the headsets for virtual meetings (jitsi and zoom) and use the AudioTechica
through the Focusrite for the audio track.

Just set up the AT again. Configured pavucontrol so it sees the webcam and
the AT mic as inputs; the audio device is seen as Scarlett Solo USB (rather
than AudioTechnica AT2500USB) and the Input Devices tab shows that same
device name with the vu meter responding to microphone input. A test using
arecord shows the audio stream:
$ ffprobe -hide_banner test-mic.wav 
Input #0, wav, from 'test-mic.wav':
   Duration: 00:00:16.00, bitrate: 64 kb/s
     Stream #0:0: Audio: pcm_u8 ([1][0][0][0] / 0x0001), 8000 Hz, 1 channels, u8, 64 kb/s

The Output Devices tab has only one device: HD Audio Generic Analog Stereo
with the Port Line Out (Plugged In). The external speakers are turned on and
I hear clicks when I adjust the volume on pavucontrol, but no sound when I
play 'test-mic.wav' with aplay.

I've looked at pavucontrol tabs and don't see why I'm not hearing that audio
stream.

What have I missed? Wrong arecord parameters?

Rich