[PD] pd~ fifo latency
msp at ucsd.edu
Mon Jan 27 19:12:41 CET 2014
I just tried this (on Linux) -- I get a delay of 64 samples with -fifo 1
(as I was hoping for), but Pd hangs if I start a pd~ subprocess with -fifo 0.
(I think it's reasonable to enforce a minimum fifo of 1 block since 0 block
delay woud make pd~ less efficient than simply putting everything in one
Anyhow, what OS are you on? It seems that, on your OS, the fifo is magically
being decreased by 1, so that you're getting 4 by default (should be 5).
If you speify 2 under these conditions you should get the minimum possible:
64-sample (1 block) delay.
On Mon, Jan 27, 2014 at 07:51:00PM -0500, puredata at 11h11.com wrote:
> hi all,
> in [pd~] documentation:
> -fifo <n> sets round-trip delay in blocks
> when trying to use -fifo 0 or -fifo 1 (i want the lowest delay
> possible) = pd hangs. when not specifying -fifo i get 256 samples of
> delay (adding 5ms to my 13ms round-trip latency).
> how to have just 1 sample delay with [pd~]?
> i short video showing -fifo 20 delay:
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