Room reverberation measurement by conventional methods and by the MLSSA measurement system
Mendel Kleiner, Peter U. Svensson · The Journal of the Acoustical Society of America · 1991
Experiments have been made to compare the measured T60 values measured by conventional analysis equipment to those measured by equipment using the maximum length sequence (MLS) correlation technique such as the commercial MLSSA system. Experiments have also been done using MLSSA impulse response results in conjunction with signal postprocessing in MatLab. Results show that the MLSSA system yielded values which differed by up to 10% from those obtained by conventional techniques. The reasons for this are not entirely clear. MatLab postprocessing also allows signal postprocessing to improve the dynamic range of measurement and the implementation of routines for more specialized room acoustic measures. [Work supported by the Swedish National Council for Building Research.]