Method for avoiding damage to hearing protection device and

摘要

Method for avoiding damage to a person who is exposed to sound signal transmitted by headphones with the following steps:– it is determined the sound pressure of the sound signal;– it is over a predetermined time interval determines the surface integral of the sound pressure;– it is the ratio of the surface integral of the sound pressure to a predetermined maximum assessment level determined and output and / or displayed;characterized in that the output signal of the headset headphone amplifier upstream as a function of the head earphone characteristic data characteristic sound pressure level and nominal impedance is calibrated in such a manner that for any one of the head earphone model, a defined maximum sound pressure level is generated.