New approach of the model experiment in room acoustics—advantage of 1/16 scale model

In the construction of the auditoria, the examination by the acoustic model experiment has been often performed. This paper describes the outline of the result of investigating various features of the method of the experiment by 1/16 scale models compared with models of 1/10 and 1/20 scales that have been generally adopted up to now. That is, the following advantages are found in the case study of the 1/16 scale model experiment, and the new approach to the model experiment method is proposed here. (1) full cover of the band to 4 kHz enables the quantification of a practical physical acoustic parameters. (2) The parameter as the air absorption coefficient in the supersonic wave band by 1/10 scale models can be used. (3) Cheap digital sound recording system can be used considering the microphone characteristics. (4) The model construction cost can be largely saved compared with 1/10 models.