Open Access
Table 1
Description of the evaluated SNQ’s (see also Fig. 2 for spectrum adaptation terms). The upper five are already in use.
Symbol | Description |
---|---|
R w | Weighted sound reduction index. |
Rw + C50–5000 | Weighted sound reduction index modified by spectrum adaptation term, derived from A-weighted pink noise spectra 50–5000 Hz. |
Rw + C100–3150 | Weighted sound reduction index modified by spectrum adaptation term, derived from A-weighted pink noise spectra 100–3150 Hz. |
Rw + C50–3150 | Weighted sound reduction index modified by spectrum adaptation term, derived from A-weighted pink noise spectra 50–3150 Hz. |
Rw + C100–5000 | Weighted sound reduction index modified by spectrum adaptation term, derived from A-weighted pink noise spectra 100–5000 Hz. |
Rw + I40 | Weighted sound reduction index modified by spectrum adaptation term, derived from pink noise spectra 50–5000 Hz weighted by inverted 40-phon contour. |
Rw + indoorA | Weighted sound reduction index modified by spectrum adaptation term, derived from A-weighted indoor noise spectra 50–5000 Hz. |
Rw + indoor40 | Weighted sound reduction index modified by spectrum adaptation term, derived from indoor noise spectra 50–5000 Hz weighted by inverted 40-phon contour. |
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