Open Access
Table B.2.
Octave band sound pressure levels for speech on-axis at 1 m from the mouth when normalised to 60 dBA.
| Sound pressure level (dB re 2 × 10−5 Pa) | |||
|---|---|---|---|
| Octave band (Hz) | Average of six male talkers | Average of six female talkers | Average of six male and six female talkers |
| 63 | 45.1 | – | – |
| 125 | 58.2 | 53.1 | 56.4 |
| 250 | 58.2 | 58.5 | 58.4 |
| 500 | 58.6 | 57.9 | 58.3 |
| 1k | 54.2 | 55.3 | 54.8 |
| 2k | 49.8 | 50.3 | 50.1 |
| 4k | 48.8 | 46.8 | 47.9 |
| 8k | 48.1 | 49.8 | 49.0 |
| 16k | 38.6 | 41.3 | 40.2 |
| A-weighted (63 Hz–16 kHz) | 60.0 | – | – |
| A-weighted (125 Hz–8 kHz) | 60.0 | 60.1 | 60.0 |
| A-weighted (125 Hz–16 kHz) | 60.0 | 60.1 | 60.0 |
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