响度
4.a unit of perceived loudness equal to the loudness of a 1000-hertz tone at 40 dB above threshold.
6.Using AP - Ni or ABR wave I latency to detect loudness recruitment is possible and the incidence is more high than that of acoustic reflex threshold .
8.The act or an instance of gradually diminishing in brightness, loudness, or strength until actual disappearance occurs.
9.3 that consideration should be given to revising this Recommendation when practical methods of metering become available that objectively measure and indicate true peak levels and perceived loudness.
10.I tried to be open--minded about the rock concert, but the music was at best loud and at worst toneless.
