Hi,

>> the delay, and pre-analyze the impulse-response file, but the manual has
>> the formula for the delay and the pre-analysis is very fast. 

I played with convolve a bit.  I first constructed an audio file made by
clapping my hands in our bath room.  Then I recorded the sound of me
tapping on the side of my acoustic bass.  I mixed the two together and
pitch shifted it down an octave or so until I got it sound how I wanted it
to.  It made a pretty good reverb.

The only problem I encountered was the long delay before the reverb starts.
 The only way I could think of to deal with this was to start the reverb
instrument the required amount of time before I started reading the audio.
This amounts to a section of nothing at the beginning of the sound file.
Is there a way to generate the convolution and "discard" the first part so
that the original audio and the reverb occur at the correct time and there
is no gap at the beginning of the resulting audio file?

Sorry I came into this thread late.

Regards,
Hans Mikelson