Equaliser and Bluetooth

[varun21]

Is the equaliser supposed to work over bluetooth? If not, is there any other package that can be used to provide this functionally?

[Tim Curtis]

From the help in the Equalizers section of Audio Config.

Code:

The Equalizers are supported by MPD and the Airplay and Spotify renderers.
NOTE: The Equalizers, Crossfeed, and Polarity inversion are mutually exclusive. Enabling one will disable the SET button on the others.

You could try manipulating the ALSA EQ directly via SSH.

Code:

sudo alsamixer -D alsaequal

[varun21]

Hi Tim,

Thanks. The Equalize works fine when playing audio files. However the eq doesn't have any effect when my phone is connected to moode via bluetooth. I must mention that I have a a DAC HAT connected to moode if that matters.

[Tim Curtis]

Try editing /etc/bluealsaaplay.conf

Replace: plughw:0,0
With: alsaequal

[varun21]

Hi Tim,

It doesn't say plughw:0,0 anywhere. Here's the file:

➜ ~ cat /etc/bluealsaaplay.conf
# bluealsaaplay.conf
AUDIODEV=hw:0,0
BUFFERTIME=20000

===========

➜ ~ cat /boot/config.txt
disable_splash=1
disable_overscan=1
hdmi_drive=2
hdmi_blanking=1
hdmi_force_edid_audio=1
hdmi_force_hotplug=1
hdmi_group=0
dtparam=i2c_arm=on
dtparam=i2s=on
dtparam=audio=off
dtoverlay=allo-boss-dac-pcm512x-audio
#dtoverlay=disable-wifi
#dtoverlay=disable-bt

[Tim Curtis]

Change hw:0,0 to alsaequal

[varun21]

Change hw:0,0 to alsaequal

Hi Tim,

Worked like a charm. Thanks so much.

Is the file supposed to revert back after a reboot? I rebooted and it reverted.

And is everyone expected to make this change manually?

[Tim Curtis]

Yes it will revert during moOde startup where the MPD and ALSA configuration are established.

IIRC in the past there were issues with allowing the the EQ's to be applied to Bluetooth. I'lll have to look through my notes.

[varun21]

Hi Tim,

Awesome work. I do appreciate it else my diy system wouldn't have been used much.

I'll create a boot script meanwhile to automatically patch this on startup

[Tim Curtis]

Your script should check for moOde startup complete.

Code:

# wrkready = 0 means startup not complete yet
# wrkready = 1 means startup has completed
pi@moode:~ $ moodeutl -q "select value from cfg_system where param='wrkready'"
1