Comparative Analysis of Room Acoustic and Psychoacoustic using HEAD Acoustics SQobold

A reliable model for noise level prediction in a room is important to determine the human acoustic comfort level. This paper attempts to evaluate different sound pressure level (SPL) models and reverberation time models of an office room. A total of fourteen SPL models and reverberation time models are compared with data measured by HEAD Acoustics SQobold. The comparison shows that Thompson SPL model gives a better result than Hodgson and Kuttruff SPL model. For the reverberation time models, the results are quite consistent except for the model by Heerama. As human comfort is important in room acoustic, the psychoacoustics index such as loudness and sharpness are included in SPL model. From the statistical analysis by two-way Analysis of Variance (ANOVA), a significant effect of loudness and sharpness on SPL are found. The regression equations are established for SPL and the psychoacoustic parameters for ease of meansurements in the future.