Re: [LAU] : Cracking sounds

From: Pieter Palmers <pieterp@email-addr-hidden>
Date: Wed Sep 24 2008 - 12:31:32 EEST

Mysth-R wrote:
>
>
> 2008/9/23 Pieter Palmers <pieterp@email-addr-hidden <mailto:pieterp@email-addr-hidden>>
>
> Mysth-R wrote:
>
> Hi,
>
> I've got a strange behaviour with my midi controller and/or
> freebob/ffado.
> I made a pure data patch, with a midi learn function. So I can
> control everything with my midi controller.
> When I use jack with Freebob or ffado (I tested both) and a
> Presonus Firebox, I got cracking sounds every time I move
> faders, pots from my Midi Controler.
> When I use jack with alsa and a poor usb berhinger UCA202 it
> works perfectly : no cracking sounds
>
>
> Is your midi controller attached to the Presonus box or is it a USB
> midi controller?
>
>
> I tried with USB and directly attached to the Presonus. My controller is
> a Korg microKontrol, but I tried with another controller too (an EMU I
> think)
> I also tried with Jackd and Jackdmp , cause I am on Gentoo 64bits.

Strange...

>
>
>
> What settings do you use for jackd?
>
>
> My settings are :
>
> /usr/bin/jackd -R -dfirewire -r48000 -p256 -n3
>
does it happen with higher buffer sizes too?

try increasing the priority of jackd to 65:
/usr/bin/jackd -R -P65 -dfirewire -r48000 -p256 -n3

I suspect that it has something to do with the kernel layer since it's
present in both freebob and ffado.

Greets,

Pieter
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@email-addr-hidden
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
Received on Wed Sep 24 16:15:02 2008

This archive was generated by hypermail 2.1.8 : Wed Sep 24 2008 - 16:15:02 EEST