LinuxMusicians

I have a MOTU 1248 and have the same issues since the TouchControl firmware update. I wonder if it's related to the addition of the "host offset" buffer setting. I agree that it's probably an ALSA or PulseAudio problem because it also happens in "plain" distros like Ubuntu, Manjaro, and Neon that a...

I posted the problem on the alsa-devel mailing list. I want to get the issue fixed. The Ultralite AVB is such a cool interface.

Thanks. Is there such a thing as an audio interface that performs the equalization instead of the computer's CPU? Is this (or could this be) one of several reasons for a DSP existing in an audio interface? If you need only 2 channels, for example to EQ your active speakers, then I recommend the rea...

Thanks. Is there such a thing as an audio interface that performs the equalization instead of the computer's CPU? Is this (or could this be) one of several reasons for a DSP existing in an audio interface? Yes, I have the MOTU Ultralite AVB. It has a builtin mixer with EQ and other effects. It is c...

root2 wrote: ↑

Mon Jul 27, 2020 11:41 am

Seems to work fine for now, but channel hopping is still a problem

I am not sure if the channelhopping is an ALSA or a jackd problem. Since restarting jackd helps, it may be a jackd problem. Unfortunately I got no helpful response from the jackd mailing list.

retnev wrote: ↑

Sun Jul 26, 2020 4:48 pm

The trouble is ; that the only active code in that config is

### Automatically connect sink and source if JACK server is present
.ifexists module-jackdbus-detect.so
.nofail
load-module module-jackdbus-detect channels=2
.fail
.endif

I'd try to comment out that stuff.

You might like Qtractor's MIDI editor as well.

At least the sound quality is ok while running jackd for more than 10 hours.

You might remove jack-source from /etc/pulse/default.pa

But I guess it's not there but loadeddynamically by some tools that you run.

You could use pavucontrol to mute jack source in Pulseaudio.

No big improvement: When I change the buffer size with jack_bufsize I get a modulo-8 output channel hop.

OK, the patch could be simplified and on my machine I get some sound out of the Ultralite AVB. It's the older one without ESS chips but with the most recent firmware.

The patch is for linux-5.8-rc6.

Test && enjoy.

I am no great programmer but I see that linux-5.8-rc6 has added support for implicit feedback.

I try to adapt drumfix's patches to that kernel to see if there is some improvement, but don't count on me.

PulseEffects runs on your computer and uses your computer's CPU to calculate all of its effects.

Can't you simply connect all of them to your DAW, e.g. with Qjackctl and record/play a single track with that data?

My M-AUDIO CODE61 has several MIDI"channels" that can be connected:

Maybe your Korg has them, too, and you have to connect all of them to your DAW to get the modulation data.