…Subsonic filterA filter that cuts out inaudible ultra-low frequency noise below 20Hz, and is used to protect speakers, etc. Reverberation timeA quantity that indicates the length of time it takes for the sound pressure level of a steady state sound to decay by 60dB after the sound is stopped. Reverberation time is proportional to the volume of the room and inversely proportional to the surface area and the sound absorption capacity of the interior materials. … *Some of the terminology that mentions "reverberation time" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… サブソニックフィルターsubsonic filter耳に聞こえない20Hz以下の超低音の雑音をカットするフィルターで,スピーカーの保護などのために使われる。 残響時間reverberation time部屋の響きの長短を表す量であり,定常状態にある音の音圧レベルが,音をとめてから60dB減衰するのに要する時間をいう。残響時間は部屋の容積に比例し,表面積や内装材の吸音力に反比例する。… ※「reverberation time」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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