Enter current and previous pure-tone audiometry thresholds (dB HL). The tool assigns an HSE category (Cat 4 supersedes; Cole's notch = Cat 3), detects per-frequency deterioration, unilateral loss, and NIHL notch.
Gender:
Age:
Current Audiogram (dB HL)
1 kHz
2 kHz
3 kHz
4 kHz
6 kHz
8 kHz
Left
Right
Previous Audiogram (dB HL)
1 kHz
2 kHz
3 kHz
4 kHz
6 kHz
8 kHz
Left
Right
Measure
Left Ear
Right Ear
Current Audiogram
Full sum (1+2+3+4+6 kHz)
Standard sum (1+2+3+4 kHz)
HF sum (3+4+6 kHz)
Previous Audiogram
Full sum (1+2+3+4+6 kHz)
Standard sum (1+2+3+4 kHz)
HF sum (3+4+6 kHz)
Results
HSE Category
≥10 dB drop
Unilateral hearing loss
NIHL notch (Cole)
This tool is derived from information provided in "The Control of Noise at Work Regulations 2005 L108" from the Health and Safety Executive (HSE). Cole's criteria for NIHL: a threshold at 3, 4 and/or 6 kHz ≥ 10 dB HL above the better of 1/2 kHz and above the better of 6/8 kHz (or 8 kHz alone for a 6 kHz notch). For educational use only.
