Resumen de Subjective evaluations on acoustical qualities of Sejong chamber hall by in-situ and laboratory experiments
Jin You, Shin-ichi Sato, Jin Yong Jeon
Acoustical qualities of Sejong Chamber Hall (476 seats) were evaluated in the hall and in the laboratory conditions. In case of in-situ experiments, violin music source recorded in an anechoic chamber was presented using an omnidirectional loudspeaker on the stage and subjects were asked to evaluate acoustical aspects at 8 different seats of the hall. The seats were chosen according to sound pressure level (SPL) and interaural cross-correlation coefficient (IACC) in order to investigate the effects of sound energy and IACC on spatial impressions. The same procedure as the in-situ experiments was applied to the laboratory condition experiments. In order to reproduce the sound fields of the actual hall, stereo dipole system including a cross-talk cancelling was introduced. The results of in-situ experiments were compared with those of the laboratory experiments to validate their results. By the experiments, effects of SPL and IACC on subjective responses of listener envelopment (LEV) were clarified.
