HML is a method used to estimate the level of protection offered by hearing protection devices across different noise frequency ranges. The abbreviation stands for:
H = High
M = Medium
L = Low
These refer to the amount of sound attenuation (noise reduction) the hearing protector provides at various frequency levels:
H (High): Attenuation at high frequencies (e.g., above 2000 Hz)
M (Medium): Attenuation at mid-range frequencies (e.g., 1000–2000 Hz)
L (Low): Attenuation at low frequencies (e.g., below 1000 Hz)
Manufacturers test and provide these values to help users understand how well a hearing protector performs across different types of noise environments. By knowing the HML values, safety professionals can select the most suitable hearing protection for specific workplace noise conditions.
Key points:
- HML is a method for evaluating hearing protector performance.
- It gives separate attenuation values for high, medium, and low frequency noises.
- H = High frequencies, M = Medium frequencies, L = Low frequencies.
- It helps determine which hearing protection is most suitable for different noise environments.
- Values are typically supplied by the manufacturer after testing.
If you need further support, please contact our Technical Support Team using the email: technical@jspsafety.com or contact us via our WhatsApp.