>I've obviously downloaded LAP 6.3.1. and I think SD is a great >module to achieve >great reverbs, which I think overperforms many hardware digital >units. In fact, if you >have an Impule Response from a sampled, let's say, TC6000, >theoretically it can >sound like it. I am wrong? I think that most digital reverb algorhythms use random, so I suspect the answer to your question is "yes"... But... if I have an Impulse Response from the room I use for a recording session, sampled through the microphone(s) I'll be using for that session, will I be able to _suppress_ the room's reverberation by applying the right amount of phase inverted Sound Designer to that track ? Unfortunately I suppose the answer is "no"... Minute variables such as air pressure, temperature, etc will compound with each rebound of the sound and give a slightly different result every time... throwing a ping pong ball two times in the same room with exactly the same velocity and direction doesn't guarantee it will follow exactly the same path, either. Am I wrong ?

--- In logic-users@yahoogroups.com, Vincent Kenis <vincent.k@c...> wrote: > But... if I have an Impulse Response from the room I use for a > recording session, sampled through the microphone(s) I'll be using > for that session, will I be able to _suppress_ the room's > reverberation by applying the right amount of phase inverted Sound > Designer to that track ? Yes, you are correct.....the answer is no. Not just variables in the air pressure/temp of the room, but remember that the space designer still works off an algorithm that approximates the sound of the room. It is a very good approximation, but there is no way to exactly mimic the sound of a room, unless you had a way of calculating the velocities and positions of every molecule in the room. You really don't need to though, because as SD makes apparent, your ear can't really tell the difference. To really be able to phase out an audio signal, you need an out of phase signal that is almost exactly the same as the original, otherwise you will add to the sound just as much as you take away from it. You would be much better off using a second mic to pick up the reverb of the room while you record the original and then using a phase reverse and a small delay to cancel the reverb from the source. -z