Patent ID: 9264828
Filing Date: 2016-02-16
CPC Classification: H03G,H04R

Claim Text:
1. A method of operating an audio device in a vehicle cabin comprising the steps of: directing an acoustic signal to at least one vehicle cabin receiver (VCR) of the audio device; measuring sound pressure levels (SPL calculating, by one or more processors, a sound pressure level (SPL) dose (SPL_Dose combining, by the one or more processors, the SPL dose (SPL_Dose performing, by the one or more processors, an action to modify operation of the audio device when the total SPL dose is greater than a predetermined threshold, the action including at least one of sending a notification signal, setting a time after which the audio device shuts down or adjusting a system transmission loss (STL) of the audio device; and modifying the acoustic signal directed to the at least one VCR by at least reducing an amplitude of one frequency or less than all the frequencies in a spectral signature of the acoustic signal.