// analysis
adc => FFT fft =^ IFFT ifft => dac;

// set the fft size
1024 => fft.size;
// set the hop size
512 => float hopSize;

// go
while( true )
{
    // compute at ifft (and upstream UAnae)
    ifft.upchuck();
    // hop
    (hopSize + Std.rand2(-10,10))::samp => now;
}