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Re: SV: SV: Ableton LIVE's ability to loop in real time
> > it would be really nice if the program could
> > "play" a test pulse which could be routed out
> > of the soundcard , and then back in again and recorded.
> > The value obtained could then be used to make everything line up.
> >
> > andy butler
>
>
> I doubt that would be needed. We're talking software here and the
> computer must "know" the latency value,
Usually the user has to enter a figure into the application.
Sometimes the audio drivers will have a figure available,
and also allow you to adjust for minimum delay without breakup.
...but for someone using a generic PC soundcard the accepted method
seems to be to overdub onto a recording then compare the timing.
The help files for Cool Edit Pro recommend a "loopback" connection
to re-record a pulse waveform .
>. I've been working a lot with Logic and
> SX and these programs does compensate automatically and it must be
> possible to do that even in looping software.
Well , I'd guess they just use a default value until you
enter an exact figure in the "options".
I don't think there's any way the application would "know"
the specs of the soundcard.
> But a computer can never
> "know" what you (the "analog" musician) is going to play into the
> recording input in the next second.
huh, me neither sometimes ;-)
> for live looping since the machine needs only a couple of milliseconds
> to calculate latency compensation and line up the recording with the
> spinning loop. I don't know much about software developing but I guess
> it's called a "look-a-head function".
>
someone on the list (was it the "AmbiLoop guy",Christopher MacDonald)
did post about how he solved the problem for looping software.
best wishes
andy butler