| 释义 |
audiometric zero audiometric zero A value arbitrarily assigned to 0 dB (deciBel) hearing level, the average hearing acuity for a normal population, which corresponds to 24.5 dB sound pressure level (SPL) at 250 Hertz.audiometric zero Audiology A value arbitrarily assigned to 0 dB–deciBel hearing level, the average hearing acuity for a normal population, which corresponds to 24.5 dB SPL–sound pressure level at 250 Hertz |