linuxaudio.org

On Sat, Nov 19, 2011 at 10:15 PM, Iain Duncan  wrote:

quoted text
> Just wondering if I understand this correctly. I making a loop based app for

> step sequencing. When I previously did this in Csound, I clocked it off a

> phasor, so the timing was sample accurate ( but that brought all it's own

> issues to be sure ). I'm wondering whether I should do the same thing in

> jack app, or use the jack transport clock, or some hybrid.

>

> My question, am I correct in understanding that if I use the jack transport

> position to rewind in time, I'll get:

> C) any other clients with running audio looping back to ( may or may not be

> desirable )

> B) a jitter based on the amount of time left between when the loop should

> end and the end of the frame buffer in which the loop length runs out?

> Has anyone solved B? Could it be done by some complex tempo cheating trick?

> Does anyone have any methods they've used for tight timing of looping in a

> jack app?

> Pointers at code appreciated of course. =)

> thank!

> Iain

>

Can you use the same approach you did in csound, using

jack_transport's BBT info to run your phasor?  It would require that

some app set a tempo and time signature, of course.  I use klick, or

gtklick (which has a tap tempo feature), to do this.

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