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| 遮音等級× | 部屋のインパルス応答× | |
|---|---|---|
| 分野 | 音響学 | 音響学 |
| 系統 | Process / pipeline | Process / pipeline |
| 提唱年≠ | 1961 | 1965 |
| 提唱者≠ | ASTM International | Manfred Schroeder |
| 種類≠ | Building partition acoustic rating | Measurement pipeline for room acoustics |
| 原典≠ | ASTM E413-16 (2016). Classification for Rating Sound Insulation. American Society for Testing and Materials. link ↗ | Schroeder, M. R. (1965). New method of measuring reverberation time. Journal of the Acoustical Society of America, 37(6), 409–412. DOI ↗ |
| 別名≠ | STC, sound transmission loss, acoustic isolation | RIR, impulse response measurement |
| 関連 | 5 | 5 |
| 概要≠ | Sound Transmission Class (STC) is a single-number rating used to describe how well building elements (walls, doors, windows) reduce sound transmission between adjacent spaces. Standardized by ASTM International and ISO, STC is calculated from sound transmission loss (STL) measurements across the speech frequency range (125 Hz–4 kHz). It is the primary metric used in building codes, product specifications, and acoustic design to ensure privacy, noise control, and occupant comfort. | The Room Impulse Response (RIR) is a measure of how a physical space (room) affects acoustic signals propagating through it. First formalized by Manfred Schroeder in 1965, RIR captures the complete acoustic character of a space by measuring the system response to an impulsive sound source. It is fundamental to characterizing room acoustics, designing audio systems, and modeling spatial audio effects. |
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