[PD] readsf~ problem with 28-channel 256hz file
kristof lauwers
pd at kristoflauwers.domainepublic.net
Tue Aug 7 16:23:23 CEST 2012
At 14:07 2012-08-07, i go bananas wrote:
>If you only want to playback the data, then the easiest way might be
>just to change pd's sample rate to 256hz.
>
>If that doesn't work, maybe have a look at readsf~ help to see how
>to manually set playback parameters
well, i want to use the EEG data as control data for an audio signal,
so lowering the samplerate is no option..
the help from readsf~ doesn't say anything about changing the
samplerate.. (but shouldn't it just read the right samplerate from
the file? it's a normal .wav file..)
At 15:17 2012-08-07, Johanna Nowak wrote:
>
> have a look at the help-file for the block~ object, which can do
> up/downsampling in a subpatch.
i tried running it from a subpatch with a lower samplerate, but that
didn't change anything..
> If you have enough ram, you could also load all soundfile data into 28
> tables, and read from those using tabread4~ or even a message-based
> tabread followed by a line~.
i will give that a try. thanks for the suggestion!
greetings,
Kristof
>On Tuesday, August 7, 2012, kristof lauwers wrote:
>Hi,
>
>I'm trying to play back a rather uncommon file with readsf~. It's 3
>hours of EEG data, on 28 channels, with a samplerate of only 256 hz.
>At first sight, readsf~ deals well with the 28 channels, but it
>seems to play it back way too fast.. Is there a way to make rit play
>back the file at the right speed?
>I'm using Pd version 0.40.3-extended on windows xp..
>
>thanks!
>
>Kristof
>
>
>
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