Gate?

Using Zynthian
1

When using Pianoteq on my Rbpi4 Zynthian, i noticed that the sound quality is not so good as i can hear some noise when i play a note and this noise stops when the note ends.

So i have two questions :

1 - Is there any config to improve sound quality, as i’m using the Pi4 ?

2 - It seems there is a sound gate running all the time, because the sound won’t play all the tail, the gate will cut the note as soon as it reach a minimum level… Where can i find this gate settings ?

Thanks !

2

Are the CPU or Power Icon light up during your playing? (Triangle or Flash)

3

No, my Zynthian is upgraded with RbPi4, no cpu issues.

4

What is your soundcard?

5

The HifiBerry has one, but you can disabled from the (ALSA) Mixer. As this control is not shown by default in the Zynthian UI, you should navigate to:

webconf->Hardware->Audio->Mixer Controls->[+]

and tweak the “auto-mute” settings.

Please confirm if this works for you …

Thanks!

1 Like
6

Hi Fi Berry

7

Will try that tonight, thanks ! And what about the sound quality ? Is there some config i could try to tweak to improve Pianoteq audio ?

8

You can try to change the Pianoteq’s internal frequency, but you probably get XRuns. Try tweaking this file:

/zynthian/zynthian-ui/zyngine/zynthian_engine_pianoteq.py

at:

Try to increase this value:

PIANOTEQ_CONFIG_INTERNAL_SR=22050

but remember that this will be smashed when you update your zynthian, unless you setup your own repository for zynthian-ui.

Regards,

9

I just added a feature request to disable auto mute by default. I just bought a new amplifier (because my old had died) and whilst testing I heard horrible crackling at the end of each note from the Zynthian. I suspected a fault with the new amp but tracked it to the auto mute (gate) performing terribly on Hifiberry DAC+ADC Pro which is really noise at the end of each note.

I am not able to disable auto mute from ALSA mixer and changes made from webconf (which do work) do not persist a reboot.