Normal Hearing
No hearing loss applied. Audio passes through without any processing. Use this as a reference point to compare what something sounds like before and after a hearing loss profile is applied.
Summary
- Severity
- Normal0 dB HL
- Most loss at
- 250 Hz · 0 dB
Degree of the worse ear, averaged over all eight frequencies, on the scale used by U.S. audiologists (ASHA)
Pure-tone average (PTA)
- Left ear
- 0dB
- Normal
- Right ear
- 0dB
- Normal
What’s a pure-tone average?
Pure-tone average is the quietest tone each ear can just hear, averaged across three pitches central to speech (500 Hz, 1 kHz, and 2 kHz). It’s the single number U.S. audiologists use to sum up an audiogram. 15 dB or lower is normal hearing, and every 10 dB higher means sounds need to be about twice as loud to be heard. Internationally, the World Health Organization averages four pitches, adding 4 kHz, so where high pitches have more loss its number comes out higher.
Thresholds by frequency
| Hz | L | R |
|---|---|---|
| 250 | 0 | 0 |
| 500 | 0 | 0 |
| 1k | 0 | 0 |
| 2k | 0 | 0 |
| 3k | 0 | 0 |
| 4k | 0 | 0 |
| 6k | 0 | 0 |
| 8k | 0 | 0 |