AES E-Library

An Audio Noise Reduction System

A noise reduction system which is suitable for use with high quality audio recording or transmission channels is described. A special signal component, derived from four band splitting filters and low level compressors, is combined with the incoming signal during recording or sending. During reproduction, the additional component is removed in a complementary way; any noises acquired in the channel are attenuated in the process. Practical features of the system include: 10 dB (unweighted) noise reduction; imperceptibility of signal modulated noise effects; level frequency response (overall); accuracy of reproduced signal dynamics; low distortion; low internal noise level; stability of characteristics.

Author: Dolby, Ray
Affiliation: Dolby Laboratories, London, England
AES Convention:33 (October 1967) Paper Number:543 Import into BibTeX

Click to purchase paper 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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD aes7)   /pp5768/pp6710/0511.pdf

Start a discussion about this paper!