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| 音声明瞭度× | 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≠ | 1980 | 1961 |
| 提唱者≠ | Herman Steeneken, Tammo Houtgast | Eberhard Zwicker |
| 種類≠ | Speech clarity assessment method | Perceptual model for audio systems |
| 原典≠ | Steeneken, H. J., & Houtgast, T. (1980). A physical method for measuring speech-transmission quality. Journal of the Acoustical Society of America, 67(1), 318–326. DOI ↗ | Zwicker, E., & Scharf, B. (1965). Psychoacoustics: Facts and Models. Springer-Verlag. ISBN: 978-3540631644 |
| 別名 | intelligibility metrics, STI, Speech Transmission Index, clarity index | masking, temporal masking, frequency masking, auditory masking |
| 関連 | 5 | 5 |
| 概要≠ | Speech intelligibility is a quantitative measure of how well listeners understand spoken content in acoustic environments. Formalized by Steeneken and Houtgast in 1980 with the Speech Transmission Index (STI), intelligibility metrics combine room acoustic parameters (RT60, noise, clarity) to predict listener comprehension. Understanding speech intelligibility is essential for designing classrooms, offices, hearing aids, and public address systems where clear communication is critical. | 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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