So I was wandering what is causing this. I had the theory that alsamixer
could check that the signal was clipping and this is why it intervened.
But the same occurs if I start from a low baseline. The sliders have a
governing curve, sometimes more abrupt, sometimes more soft than what my
inputs a
I have the 0-100 range with all sliders set to 66 as zero position. Here
is what happens if I dial in my values.
1) I set the 10 band equalizer to 66 66 68 68 66 65 64 62 64 66
2) I hit save
3) Page reloads after saving, but no reboot yet
4) Slider values changed to 64 64 68 68 63 63 62 63 64
)
WARNING: ALSA can do your head in.
Generally speaking, range settings in ALSA can be all over the place,
and probably not 0% to 100%.
IIRC the alsamixer and pCP web interface are mapping an ALSA range to a
percentage, thus rounding errors occur.
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Is there any way to see something like this:
https://media-cdn.ubuntu-de.org/wiki/attachments/12/28/alsamixer.png
and which command via SSH brings me there? I find it complicated that in
my browser, the set values for 10 band equalizer, after saving (and also
when I hit "test"), change slightly.
I wanted to check whether the weird level jumps are only a matter of the
web interface output, but could not open alsamixer equalizer from ssh
If I type: alsamixer -D equal
I get: cannot open mixer: Operation not permitted
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Hey Paul,
is there more information on what the module is doing, how it behaves
and what happens when we push a button? I have made the experience that
my DAC clips when I enable alsa 10 band equalizer without lowering the
digital volume to 90%.
But when I first made this experience, after some t
Yes, that is the correct page for the caps library.
And it looks like the library is not reporting db back to alsa, so it's
not displayed.I would think it would then be a linear control, but
I'm not 100% sure.
piCorePlayer a small player for the Raspberry Pi in RAM.
Homepage: https://www
Paul - thanks for the reply but that doesn't seem to work for me. I
tried with the following command,
sudo alsamixer -D equal
It displays the equaliser bands but the labels are in the 0-99 range
with the default values showing as 66.
I wonder if I've stumbled across the answer on this page -
h
run alsamixer and select the -equal output device. It should show you
software db values.
It's hard to do a HTML slider in db (Which is why we just do 0-100)
piCorePlayer a small player for the Raspberry Pi in RAM.
Homepage: https://www.picoreplayer.org
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I've enabled the equaliser option and it's working, but can someone
please explain what adjustment units it uses? I want to try out some
headphone equaliser settings that use the common frequency band decibel
gain values, e.g. +3.0 dB or -2.2 dB, but the adjustment values in the
equaliser range f
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