1. Fundamentals of Acoustic Signal Processing;Tohyama,1998
2. Sound and Signals;Tohyama,2011
3. Reciprocal of the mean free path;Batchelder;J. Acoust. Soc. Am.,1964
4. New method of measuring of reverberation time;Schroeder;J. Acoust. Soc. Am.,1965
5. Equivalent sound absorption area in a rectangular reverberant room (Sabine's sound absorption factor);Tohyama;J. Sound Vib.,1986