linuxaudio.org

On Wed, Jul 14, 2010 at 11:54:35PM +0200, Ralf Mardorf wrote:

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> On Wed, 2010-07-14 at 23:43 +0200, fons@kokkinizita.net wrote:

> > On Wed, Jul 14, 2010 at 11:28:54PM +0200, Ralf Mardorf wrote:

> > > Or it was at 4 ms = +- 2ms or something like that. This is a delay that

> > > isn't audible for day-today-day audio events, but it can brake a groove

> > > easily.

That would mean my hardware synth (the yamaha vl70-m), connected *directly*

(no PC involved), causes a huge latency (20-26ms) making it utterly unusable

for making a groove - and not just slightly, but by a large margin.
That *could* be (as it's not a drum synth), but it'd be kind of surprising. 
> > You keep repeating this, but so far I haven't seen a shred

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> > of verifyable evidence to support this claim.

>

> I could record audio for kick, snare, hi hat and bass one after the

> other and mix it to one rhythm group and additionally I could record all

> instruments at the same time and send the recordings to you and you

> could do the same by yourself. It's also hard to say, if there isn't

> more jitter, but 4 ms. At what point starts the attack of a signal

> within the ambient noise level?

Perhaps you could make a stereo recording, the left channel recording the

mic'ed 'tick' of hitting the trigger, the right channel recording the audio

coming from the speakers? You'd say e.g. a loud hi-hat should be recognisable

enough.
> At least I could record FluidSynth DSSI in unison played to the Alesis

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> D4 by using different -p values. I'm sure everybody would be able to

> here the problem.

Let's keep this thread restricted to the situation with only ALSA MIDI in

routed directly to ALSA MIDI OUT - it's getting hard to keep track of what's

going on :).
Arnout

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