Introduction to Acoustics

have mainly been concerned with temporal criteria, represented
primarily by the reverberation time, from the
time of Sabine [10.2] onward. No comprehensive theory
of design including the spatial criterion as represented
by the IACC existed before 1977, so that discussions
between acousticians and architects were rarely on the
same subject. As a matter of fact, both temporal and
b)
c)
0 10 20 (m)
Fig. 10.21 (b) Plan of balcony level; (c) Plan of audience level
Concert Hall Acoustics Based on Subjective Preference Theory 10.2 Design Studies 367
spatial factors are deeply interrelated with both acoustic
design and architectural design [10.65, 66].
As an initial design sketch of the Kirishima International
Concert Hall, a plan shape like a leaf (Fig. 10.20a)
was presented at the first meeting for discussion with the
architect Fumihiko Maki and associates with the explanation
of the temporal and spatial factors of sound field. Part C 10.2
Stage
Listening room
testing individual preference
Entrance