[PD] Debian, Pd and Midi

Nicola Pandini nicola.pandini at gmail.com
Mon Feb 13 09:16:46 CET 2012


Il 13/02/2012 09:07, Lorenzo Sutton ha scritto:
> On 13/02/12 01:07, Martin Peach wrote:
>> On 2012-02-12 17:32, Nicola Pandini wrote:
>>> Hi, I'd like to use Pd for midi processing, and I'm trying to find the
>>> flags to have the best "Pd for midi" possible.
>>> For me midi latency is an extremely important factor, so all my efforts
>>> were in the way to optimize it.
>>> I did some experiments, playing with flags and seeing what happens (I
>>> use Pd 0.43.1 on Debian Wheezy, with jack 44.100 - 128 frames):
>>>
>>> With
>>> -rt -jack -audiobuf 1 -alsamidi
>>> I get 2.9 ms of midi latency
>>>
>>> Adding
>>> -noaudio
>>> I get two possible values: 1.45 or 2.9 ms
>>>
>>> Adding
>>> -r 192000
>>> I get 1.33 ms
>
> Interesting. But how are you actutually measuring this?
> And is this using external hardware for midi IN/OUT?

Hi Lorenzo!
I attached the patch.
I use an internal midi keyboard (i.e. vmpk).


-- 
Nicola

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