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| Sonaryhtälö× | Puheen ymmärrettävyys× | |
|---|---|---|
| Tieteenala | Akustiikka | Akustiikka |
| Menetelmäperhe | Process / pipeline | Process / pipeline |
| Syntyvuosi≠ | 1983 | 1980 |
| Kehittäjä≠ | Robert Urick | Herman Steeneken, Tammo Houtgast |
| Tyyppi≠ | Underwater acoustic detection framework | Speech clarity assessment method |
| Alkuperäislähde≠ | Urick, R. J. (1983). Principles of Underwater Sound (3rd ed.). McGraw-Hill. ISBN: 978-0070660816 | 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 ↗ |
| Rinnakkaisnimet | active sonar equation, passive sonar equation, underwater detection, acoustic range equation | intelligibility metrics, STI, Speech Transmission Index, clarity index |
| Liittyvät | 5 | 5 |
| Tiivistelmä≠ | The sonar equation is a fundamental framework for predicting the detection range and performance of active and passive sonar systems in underwater environments. Systematized by Robert Urick in his seminal 1983 work, the sonar equation quantifies the acoustic signal-to-noise ratio (SNR) needed for detection, accounting for source level, propagation loss, noise characteristics, and receiver sensitivity. It is the cornerstone of underwater acoustic system design, naval detection systems, marine research, and subsea communication. | 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. |
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