If a tone or signal were presented at 40dBSL to a listener with a threshold of 40dBHL what is the sound level of the signal?

Answer 1

diffrense betwen dbsl and dbhl and db

Answer 2

The sound level of the signal would be 40 dBHL. The dBHL unit is used to specify sound levels relative to an individual's hearing threshold, while the dBHL unit is used to specify sound levels relative to a standard reference sound pressure level. When the sound level in dBHL is equal to the sound pressure level in dBSL, the sound level of the signal is the same as the signal level presented.