1. 1) S. Iwamiya and S. Ohashi, Improvement of Auditory Sensitivity: Theory and Practice of Technical Listening Training (Ongakunotomohsa, Tokyo, 1996), pp. 58–70.
2. 2) Department of Acoustic Design, Kyushu Institute of Design, Introduction to Acoustic Design Science: Sound, Music, and Technology (Kyushu University Press, Fukuoka, 2000), pp. 175–187.
3. 3) Japan Association of Professional Recording Studios, Introduction to Sound Recording Techniques (Kenrokuka Publishing Corporation, Tokyo, 2001), pp. 65–67.