From the looks of the srcBuf
it looks like you’re on a (much?) older version of the toolbox, so probably worth nabbing the most recent one:
The general idea though is that the @startframe
is where in your target buffer you want to start and @numframes
is how long for.
So @startframe 44100 @numframes 22050
will analyze 500ms starting 1000ms into the file.
If you’re always wanting to analyze the same size chunk you can just set the attribute to a fixed size (@numframes 11025
) and then do the rest with messages (in a message: startframe 88888, bang
).
As a point of reference, here is a chunk from my performance patch that does more-or-less what you’re describing (though on a much smaller buffer):
----------begin_max5_patcher----------
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-----------end_max5_patcher-----------
edit:
you can ignore the @blocking
stuff, as well as the hyper-specific buffer~
stuff, that’s just for threading purposes in my patch