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<DIV><FONT face=Arial size=2>Hi,<BR>I've been studying DSP theory, FFT-based
techniques in particular.<BR>I've found the FFT tutorials in PureData to be a
great place to see those techniques applied to sound.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>However, one little implementation detail still has
me confused: <BR>In the engine of the phase vocoder patch (the FFT-ANALYSIS
subpatch), there is a Float object which is used to calculate the next read
location in milliseconds. This value is then converted to a sample
position & passed through a Line~ to specify the start location of the first
Tabread4~.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>What I don't understand is why the conversion of
the Float from milliseconds to samples doesn't take into account the overlap of
the subpatch-in other words, why isn't the local sample rate used, instead
of the sample rate of the parent window?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks in advance for any insight anyone
might have to share.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Chris Campbell<BR><A
href="mailto:cb@inner-ear.net">cb@inner-ear.net</A></FONT></DIV></BODY></HTML>