SPECTRUM CORRECTION SYSTEM INTENDED IN PARTICULAR FOR AN AUDITORIUM

摘要

This electroacoustic system when it is applied in particular to an auditorium (17) comprises a plurality of cells (19, 20, 21). In these cells are provided: an equalization device (26), an emitter (24), a receiver (22), an amplification circuit (23, 25) for amplifying the signals arising from the receiver to said emitter and a calculation facility (15) which will act, among other things, on the equalization device (26). It is proposed to measure the emitter, auditorium response observed at the level of the receiver by using, in particular, a measurement signal provided by a noise generator (28) or any other method of measurement making it possible to obtain the response of the system in open loop. The equalization device will operate in such a way that said response is as close as possible to a desired response. Application: modification of the acoustic properties of auditoria.