Patent ID: 9564146
Date: 2017-02-07
CPC Classifications: B63C,G10L,H03G

Claim:
1. A system for processing of an audio signal relating to a diver in a deep diving environment, said system comprising: an input device structured to receive the audio signal, a pitch changing module configured to change the pitch of the received signal, a first low shelf filter module configured to filter the pitch changed signal, a first high shelf filter module configured to filter the signal received from the first low shelf filter module, thereby creating a first filtered signal, an automatic gain control module configured to adjust a gain of the first filtered signal, a second low shelf filter module configured to filter the gain adjusted signal, and a second high shelf filter module configured to filter the signal received from said second low shelf filter module, thereby creating a second filtered signal said first low shelf filter module and said first high shelf filter module collectively including a first center frequency and a first filter gain value, said second low shelf filter module and said second high shelf filter module collectively including a second center frequency and a second filter gain value, said first center frequency being equal to said second center frequency, and said first filter gain value being the inverse of said second filter gain value.