Friday, July 24, 16:00 — 17:20
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In designing a fine multichannel monitoring environment, `low frequency control' and `wide listening area with natural playback sounds' are the important keys. In this paper, three practical design strategies are introduced to realize these keys. The first strategy is a calculation technique of modal analysis using `modal summation method.' It can predict low frequency properties of a rectangular room with less modeling/computing load. The second strategy is an active reflection control. It is a technique to improve low frequency responses by adding reflection sounds. The third strategy is a DFR (Decorrelated First Reflections). It is a design method of time response using early reflections actively. These strategies are introduced through a real design project, multichannel mixing room of NHK's CP604 Studio. Both calculated and measured data for the project shows good responses to demonstrate usefulness of the design methods proposed here.
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