Reverberation characteristics of an original sound field and a reproduction
sound field are measured and a difference between the reverberation characteristics
is obtained. A reflected sound pattern added to reproduction sound is calculated
so that the reverberation characteristics of the reproduction sound field approximate
to the reverberation characteristics of the original sound field from the difference
between the reverberation characteristics and is added and reproduced in the reproduction
sound field. A frequency is divided into predetermined bands and a reflected sound
pattern to be added is obtained similarly in the respective bands and is added
to the corresponding frequency band of the reproduction sound and reproduced. Measurement
of the reverberation characteristics is obtained by inputting an impulse signal
to a speaker and collecting a generated sound wave by a microphone provided in
a position corresponding to the head of a listener and analyzing the sound wave
by an analyzer.
