Db spl to db hl conversion chart

1. How to convert from dB SPL to dB HL?
2. What is the relationship between dB HL and dB SPL?
3. How loud is 110 dB SPL?
4. Is dB the same as SPL?

How to convert from dB SPL to dB HL?

To convert SPL readings to HL readings, audiometers are calibrated to add a specific amount to each frequency tested. This amount varies by frequency. For example, at 125 Hz, it adds 45 dB, while at 1,000 Hz it only adds 7 dB. Likewise, at 4,000 Hz it adds in 9.5 dB, while at 8,000 Hz it adds in 13 dB.

What is the relationship between dB HL and dB SPL?

Decibels in hearing level, or dB HL, is com- monly used in audiology because it refers to the decibel level on the audiometer. The reference level for dB HL is “0,” which is related to the average threshold in decibels sound pressure level (dB SPL) for the average, normal-hearing listener.

How loud is 110 dB SPL?

Riveting machine (110 dB); live rock music (108 - 114 dB). Average human pain threshold. 16 times as loud as 70 dB. Jet take-off (at 305 meters), use of outboard motor, power lawn mower, motorcycle, farm tractor, jackhammer, garbage truck.

Is dB the same as SPL?

Sound pressure level, or SPL, is a measurement of sound pressure that uses Pascals (Pa) as its unit of measurement. We convert that into the more popular decibel scale or dB scale.