Detection and modeling of fast attack transients

Attack transients or simply attacks, are zones of short duration and fast variation of the sound signal short-time spectrum such as at the attack of percussion instruments. There are many motivations for attack detection and modeling; improving general analysis techniques is one of them. A method and a program have been developed for detection, modeling and reconstruction of attacks. It is based on the detection of energy peaks appearing simultaneously in several frequency bands of a timefrequency representation. This program has been tuned and tested on a data base of percussive sounds and mixtures.