A single-ended noise reduction system is described, which is specifically intended to reduce background noise levels in automotive audio systems. The system described in this paper uses a combination of variable filtering and downward expansion in conjunction with a unique auto-threshold detector. This yields an effective 25 dB of improvement over FM radio, tape, and CD sources without the need for any manual adjustment.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.