LinuxMusicians

Posted: **Tue Feb 03, 2015 9:49 pm**

Hello, I discovered accidentially solution for this problem

QJackctl -> Setup -> Settings tab -> Chennels I/O set input channels to 2, it worked for me.

If this is applied then /proc/asound/card0/pcm0c/sub0/hw_params looks like

Code: Select all

access: MMAP_INTERLEAVED
format: S24_3LE
subformat: STD
channels: 2
rate: 96000 (96000/1)
period_size: 256
buffer_size: 512

But without fix it looks like

Code: Select all

ccess: MMAP_INTERLEAVED
format: S24_3LE
subformat: STD
channels: 4
rate: 96000 (96000/1)
period_size: 256
buffer_size: 512

I don't know why default value for channels is 4.

Anyway E-MU is dead.

Posted: **Thu Mar 15, 2018 1:31 pm**

goodvibrations1984 wrote: I´m running a ubuntu 10.04 minimal system. In other words, I installed Ubuntu mini CD (only about 14mb) with command line and add my stuff. I´m using E17 windows manager only. I´m not using pulse audio, gnome and all the stuff witch comes with ubuntu or ubuntu studio.
I follow this article:

http://tapanisysimetsa.blogspot.com/201 ... on_10.html

I didn´t install everything. Gnome, lubuntu and other audio apps I don´t use, I left away.

My CPU it´s an Intel Core 2 Duo, 2 gb ram, 2 hds, 160gb and 500gb. Intel motherboard.

The system is working with RT kernel and some tweaks I found in the article.

The performance of my EMU 0404 USB is BETTER THAN WINDOWS - just 64 samples with 2 buffers in jack with a ultra low latency of 2.4ms. Xruns only when graphical interface do something, but audio is ok. Better than windwos 7 too.

I tried this last night (btw E17 is very impressive) and could not get Jack to use the EMU 0404 USB with 44.1khz and 128 samples with 2 buffers without Runs every couple of seconds. The best latency I can achieve is just over 10ms which is too much for me. I'm trying to have an all in one karaoke setup using Ardour monitoring mic input 1 and adding reverb and openkj running at the same time. Even after a cold reboot with nothing else running I can't get 44.1khz / 128 or less samples to run without runs.

Could it be the spec of the machine? It's a Dell 1535 laptop, 2GHz processor, 4GB of RAM

LinuxMusicians

Emu 0404 USB at 96khz

Re: Emu 0404 USB at 96khz

Re: Emu 0404 USB at 96khz