Altiverb is a sampled acoustics Reverb plugin for that offers realistic one, two and four channel sampled acoustics of real halls, cathedrals, bathrooms and virtually any real acoustic environment. Included are dozens of acoustic samples ranging from the Amsterdam Concertgebouw to bathrooms and closets.
Altiverb also lets you sample acoustic spaces – or hardware reverbs – on your own.
Altiverb is the first reverb plug-in to take full advantage of the power of Apple’s Altivec Velocity Engine which means that it requires a G4 as a minimum specification to even run
where can I find the native Impulse Response Library