[LAD] Tests directly routing pc's midi-in to midi-out (was: Re: ALSA MIDI latency test results are far away from reality)

You're posting a lot of information, but I'm going to ask some stupid questions
anyway - just trying not to jump to conclusions before getting a crystal-clear
picture of your setup.

On Wed, Jul 14, 2010 at 03:23:03PM +0200, Ralf Mardorf wrote:
> 1.
>
> I disconnected all audio connections for JACK and connected hw MIDI in
> to hw MIDI out. connected the DX7 MIDI out directly to the D4 MIDI in and
> then I reconnected to the PCI card.
>
> The difference is alarming :(.
>
> Yamaha DX7 --> Alesis D4 results in a 100% musical groove.
> Yamaha DX7 --> PC --> Alesis D4 results in extreme latency

So here you're directly routing the MIDI IN to the MIDI OUT, and experiencing
latency. Are you using JACK here, or directly ALSA? In other words, are you
connecting 'in' to 'out' in the qjackctl 'MIDI' tab or in the 'ALSA' tab?

Regards,

Arnout
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Received on Fri Jul 16 20:15:06 2010