AES E-Library

AES E-Library

A Noise-Reduction System: Dynamic Spectral Filtering

Document Thumbnail

A new method of audio noise reduction based on the -spectral derivative- instead of the usual -energy in a band- is proposed. The algorithm has been realized in a system utilizing dynamic filters to sense the upper corner of the audio spectrum and adjust the system to pass frequencies up to the corner. With the proper dynamics, the filter can pass the full bandwidth of the signal, suppress wide-band noise, and reduce the apparent noise with little perceived effect.

JAES Volume 20 Issue 7 pp. 558-561; September 1972
Publication Date:

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.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

AES - Audio Engineering Society