Altiverb 6 is a convolution reverb plug-in for Mac OS X and Windows XP. It uses top quality samples of real spaces to create reverb, ranging from Sydney Opera House to the cockpit of a Jumbo Jet. Altiverb 6 offers the most extensive set of parameters, it supports all professional plug-in formats including protools TDM on the Mac, parameter automation and surround. Altiverb 6 gives you a choice between iLok SmartKey or Challenge/response copy protection, it lets you sample your own spaces (currently Mac only), and Altiverb is efficient on your cpu.
Measurements of real acoustic spaces and sampled gear are called Impulse Responses (IR's), and they are intended for use in the Altiverb™ Sampled Acoustics Processor. Altiverb™ can apply these impulse responses to your audio, making it sound as if you are playing back your sound in real halls, churches, rooms, cars, etc.