Variable acoustics in small rooms for music

Abstract

Small rooms for music are frequently discussed to consider variable acoustics with different program in practice room, rehearsal room as well as audio listening room. In practice room major criteria in acoustics is usually discussed how to determine reverberation with less than 1.0 s. RT for different use such as practice for different musical instrument. And on audio listening room, acoustical effect on sound reproduced by speakers is important especially for reproducibility of 3D audio representation and usually surface material behind stereophonic speakers gave significant effect on the accuracy of sound localization with the sound played by speakers. Rehearsal room acoustics is always discussed compared to the stage acoustics in primary concert hall and some electro-acoustic technique is discussed how to simulate stage acoustics. This paper presents examples of acoustical design for different practice rooms, rehearsal room and audio listening room. A different RT setting for each room with different program is discussed as well as different configuration of surface material especially in audio listening room. Finally rehearsal room with electro-acoustics system to reproduce stage acoustics of specific concert hall is discussed and measurement result is presented.