Midi -> External Synth -> Pulsar Input -> ASIO Latency!!

[FLOW]

Hi There I haven't been here for a while. But when it comes to pulsar (scope) probs, in my opinion this is the place to be.

My question,

From Ableton Live i send a midi signal thru an Emagic MT4 to my Access Virus A (This is all in sync) Then the Access Virus output is routed to my Creamware Pulsar 1 (scope home) inputs. In my pulsarproject, I routed the inputs to ASIO inputs. Then the signal is used in Ableton.
The Signal is there, but it has a big delay (latency). My Ulli settings are on latency 13ms on 44.1Khz. In my opinion this isn't noticeable for the human ear. When I send a negative midi delay, the signal is almost in sync. But i don't think this is the solution. I think it is a ASIO Prob because when i route the Pulsar Inputs to the Analog Pulsar Outputs, there is no latency. should I use ASIO2?

I hope someone can tell me what i'm doing wrong here.
I'm using a P4 2.0 Ghz with ASUS motherboard. 512 MB Ram.

Greetz FLOW

[garyb]

it sounds like you are monitoring off live. try puting both live and the virus thru a mixer and monitor THAT(the mixer).

[FLOW]

Hi there garyb, thanx for your reaction.
But i thought that live monitoring/recording was the power of ASIO, (direct feedback). I don't own a mixer and have no hardware effects. I would like to use Ableton as a mixer and effect engine.
Am i doing here something totally un-reachable ? And if i am, are there cards on the market that can do this type of monitoring.

Thanx.

Greetz FLOW

[garyb]

your scope card will do it.
the mixer is in scope(i prefer the stm2448, but they'll all work). the scope midi driver is probably faster than the usb one as well.



<font size=-1>[ This Message was edited by: garyb on 2005-01-23 06:32 ]</font>

[FLOW]

Garyb,

yeah that's what i'm doing now, i use the scope-mixer to combine all signals. En recording is always in sync. but i wan't to use my vst-effects with external synths. and i want a real-time in sync feedback so i can tweak the effects. I think i'm just asking to much from the SCOPE or the ASIO Protocol.

Thanx

Greetz FLOW

[astroman]

On 2005-01-23 07:02, FLOW wrote:
... but i wan't to use my vst-effects with external synths. ... I think i'm just asking to much from the SCOPE or the ASIO Protocol.

maybe you just havent't 'visualized' the concept behind this yet, thus calling it 'asking too much'
The 'cables' between the various stages are represented by data buffers and filling and reading those buffers obviously takes time - it has to.

So if you send something down the asio bus it needs one unit of asio latency, say from sfp to your vsti. Returning the processed data from the vsti adds another unit, in your case 2x13 ms=26. Midi isn't latency free, too.

Depending on complexity latency may even more increse, but imho it's still usable as a 'live' condition setup.
When you perform 6m away from a real world amp the signal is 18 ms late (3ms/m)
Imho one simply gets used to it by practice.

cheers, Tom

[garyb]

the second generation cards go down to 3ms latency. they will do what you want. you could still keep the pulsar1 and use it at the same time.

[FLOW]

Ok, i'm already looking for something like a echo I/O or a MAudio Firewire solo for my laptop. Thanx for your helpful reactions.

Greetz FLOW

[borg]

are you sure you have tuned ableton live regarding latency? there's a real easy walkthrough for this procedure in the manual of Live.

however, as far as i know, only ASIO2 handles direct monitoring.

[FLOW]

He Borg,

I never lookt at it that way. About the live manual, do you mean under 5.2.3 Adjusting The Overall Latency. I will try that solution tomorrow.

Thanx for the tip