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| RT60 残響時間× | 聴覚心理学的マスキング× | |
|---|---|---|
| 分野 | 音響学 | 音響学 |
| 系統 | Process / pipeline | Process / pipeline |
| 提唱年≠ | 1900 | 1961 |
| 提唱者≠ | Wallace Clement Sabine | Eberhard Zwicker |
| 種類≠ | Room acoustic descriptor | Perceptual model for audio systems |
| 原典≠ | Sabine, W. C. (1900). Collected Papers on Acoustics. Dover Publications. link ↗ | Zwicker, E., & Scharf, B. (1965). Psychoacoustics: Facts and Models. Springer-Verlag. ISBN: 978-3540631644 |
| 別名≠ | RT60, reverberation time, decay time | masking, temporal masking, frequency masking, auditory masking |
| 関連 | 5 | 5 |
| 概要≠ | RT60 (reverberation time) is the duration required for sound energy in a room to decay by 60 decibels after the source stops. Pioneered by Wallace Clement Sabine in 1900, RT60 is the most widely used single-number descriptor of room acoustic properties. It reflects how much sound is absorbed versus reflected by room surfaces and directly affects speech intelligibility, music clarity, and acoustic comfort. | Psychoacoustic masking describes how the human auditory system suppresses the perception of weak sounds in the presence of stronger sounds. Formalized by Eberhard Zwicker in the 1960s, masking is a fundamental phenomenon in hearing and the basis for perceptual audio coding (MP3, AAC, OPUS). Masking occurs both in frequency (spectral masking) and time (temporal masking), and understanding these effects enables efficient audio compression and realistic sound design. |
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