Re: max deviation is never above 50%

[Denis Shulyaka <shulyaka@xxxxxxxxx>]

Maybe the ALSA layer between PA and the recording applications makes the difference. Could you please also provide the amixer output.

пт, 2 окт. 2020 г. в 14:31, Mike Fisher <mike@xxxxxxxxxxx>:

Fresh reboot.

I ran these 4 commands simultaneously:

arecord -f cd ALSAoutput.wav

parecord PAoutput.wav

gnome-sound-recorder

audacity

All volumes to 100%

Started them all recording at the same time, and here are my results.

arecord -f cd ALSAoutput.wav Full deflection

parecord PAoutput.wav Full deflection

gnome-sound-recorder 50% deflection

audacity Full deflection

I did not use  pasuspender for any test.

It used to be the case that if I had pulse running it would grab ALSA, and no other applications could use ALSA directly. They had to use pulse which allows more than one application to use sound at the same time. I would open Audacity using the pulse host. Then I would only get 50% max deviation.

I don't know what changed, but this is actually the first time I have ever gotten audacity to get full deviation without having to

auto spawn=no; pulseaudio -k

Then launch Audacity to grab ALSA which causes other apps to be blocked.

So this is a good start. Audacity now only sees ALSA as host, and pulse is no longer available as a host. This is confusing me as this never happened before while pulse was still running. I know pulse is running because pavucontrol still shows all its controls.

So I reboot and repeat the test to find out that I get the same result a/s above. Audacity has full deviation with pulse running (Audacity only sees ALSA, but works nonetheless). So what am I bitching about, it seems to be working. I should be happy and just go away without understanding WHY this is working. except for 1 item.

gnome-sound-recorder only gets 50% max deviation AT THE SAME TIME as 3 other applications are getting 100% ma deviation. WHAT????

So I have 4 sound clips recorded by 4 different apps all using pulse audio 3 of them get 100% max deviation and one does not. 

Here is a fresh system config from right after the above test.

https://termbin.com/1hd1

Man I hope someone can help me finger this all out.

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--

Best regards,

Denis Shulyaka

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