Characterization of Classroom Noise and Noise Control Techniques and their Effect on Speech Comprehension while Learning
| Autor: | Line Guerra, Sooch SanSouci, Dick Campbell |
|---|---|
| Přispěvatelé: | Leclere, Quentin, Société Française d'Acoustique - SFA |
| Jazyk: | francouzština |
| Rok vydání: | 2010 |
| Předmět: |
Masking (art)
S/N Speech to noise ratios [SPI.ACOU] Engineering Sciences [physics]/Acoustics [physics.class-ph] Acoustics and Ultrasonics Noise measurement Computer science Acoustics Speech recognition Speech intelligiblity Speech comprehension Monaural Noise Noise in schools Arts and Humanities (miscellaneous) Noise control [PHYS.MECA.ACOU] Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] Binaural recording Classroom acoustics Energy (signal processing) Envelope (motion) |
| Popis: | Classrooms have been shown to be prone to elevated occupied noise levels that reduce speech comprehension and inhibit learning. This presentation discusses a current study that includes three parts: 1) the characterization of masking invoked by noise commonly found in todays classrooms, 2) the formulation of a metric that intends to associate masking risk to noise features and 3) the attempt to quantify any increase in speech comprehension resulting from interior acoustic designs that aspire to reduce noise in occupied classrooms. Calibrated recordings made during classroom activities in 9 schools are post processed to allow noise characteristics to be rated based on attributes related to the noise source or type, duration, rate of recurrence, spectra, level, envelope, peak energy. Binaural and monaural recordings are compared. Speech to noise ratios (S/N) are statistically weighted over various time frames and activities in an attempt to refine reproducibility among different activities. All recordings were made in occupied rooms both before and after the various treatments were integrated. The results suggest that there are misconceptions in the literature in terms of todays classroom design trends and a few novel principles emerged as being highly effective. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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