Using Playrec for a real-time audio processing

[susnak]

Hi everyone,
I just wanted to announce that I have made an abstraction layer on top or playrec for doing real-time audio processing in Matlab/Octave. The code is available in our toolbox
http://ltfat.sourceforge.net/

It is really simple to use. The following example takes an input from a microphone and routes it trough the loop to the speakers allowing setting gain in a range of -20 to 20 dB.

block('playrec');
p = blockpanel({'GdB','Gain',-20,20,0,21});
while p.flag
gain = blockpanelget(p,'GdB');
f = blockread();
% You can do anything to f here
blockplay(f*10^(gain/20));
end
blockdone(p);

I tried to make it as versatile as possible. For anyone interested, here are some links:
http://ltfat.sourceforge.net/doc/blockproc_central.php
http://ltfat.sourceforge.net/doc/blockproc/block.php

I would appreciate any feedback.
Thanks
Zdenek

[johnbodhi]

Is there any way to perform an FFT on f, extract the phase from one frequency bin, and then display the phase versus time in real-time?