Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Sound pressure level.
| Group | Habitual | Clear | Loud | Slow |
|---|---|---|---|---|
| Control | 73 (2.7) | 77 (4.5) | 83 (4.0) | 73 (4.0) |
| 68–81 | 70–90 | 75–94 | 66–81 | |
| MS | 72 (3.0) | 75 (4.4) | 80 (3.6) | 72 (4.7) |
| 66–80 | 68–87 | 73–87 | 64–85 | |
| PD | 72 (3.2) | 75 (4.0) | 79 (4.0) | 72 (4.6) |
| 66–79 | 69–82 | 70–85 | 62–78 |
Note. Mean sound pressure level (in dB) and standard deviations (SDs) are reported in the first row for each speaker group. The corresponding range is reported in the row directly below means and SDs.
