Spatial variation of the acoustic field in auditoria
- Research Area:
- Raum- und Bauakustik
Bachelor Thesis of Reich, Lennart
In room acoustics, several measurements have shown that the acoustic field in large rooms, such as auditoria, varies significantly depending on position. This raises the question of the practical validity of acoustical measurements, especially if single measurements are used to analyze the acoustical character of an extended area in an auditorium. In order to make this argument work it is necessary to know how much the sound changes from one position to the next. To establish this relationship empirically impulse responses are measured in an array of closely spaced microphone positions using a measurement apparatus capable of automatically sampling the sound field over an extended area. These impulse responses can be used to calculate acoustical quantities related to the perceived acoustical character of a room, which are then examined in a statistical analysis.