Decibel Study Questions

A listener who barely detected a 1,000 Hz tone at 55 dBSPL would therefore have a hearing loss of 55-7=48 dB; that is, the hearing sensitivity of this listener would be 48 dB worse than normal. The reference for dBHL is the audibility threshold, so this listener would have a 55 dB hearing loss at 125 Hz. There is no need to consult the table. ................
................