Distortions in Pi 4 + Amp2 + Equalizer

Hi,

There are audible distortions whenever I increase any frequency band volume using command: alsamixer -D equal

Is it possible to fix that somehow?

I use Raspberry Pi OS Lite Buster. Here is my /home/pi/.asoundrc:

pcm.!default {
type plug
slave.pcm plugequal;
}
ctl.!default {
type hw card 0
}
ctl.equal {
type equal;
}
pcm.plugequal {
type equal;
slave.pcm "plughw:0,0";
}
pcm.equal {
type plug;
slave.pcm plugequal;
}

The output from aplay -l:

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: sndrpihifiberry [snd_rpi_hifiberry_dacplus], device 0: HiFiBerry DAC+ HiFi pcm512x-hifi-0 [HiFiBerry DAC+ HiFi pcm512x-hifi-0]
Subdevices: 0/1
Subdevice #0: subdevice #0

Thank you!

HiFiBerry team May 27, 2022 16:34

We din't get alsaequal working in a good audio quality. Therefore, we stopped using it in HiFIBerryOS.

hifi May 28, 2022 05:23

OK, fair enough. Thank you.

xXfreshXx March 21, 2023 16:15

Any chance to get the equalizer running with AMP2 on Raspbian Lite? Anything else would be very very sad.

Distortions in Pi 4 + Amp2 + Equalizer

3 comments