AES E-Library

A Novel Multi-Stage Loudness Control Algorithm for Audio Processing

Modern audio broadcast processors strive to produce audio with consistent loudness and a specified dynamic range. In general a tight control on the output audio level is provided by an Automatic Gain Control (AGC) mechanism. As most of the other processing modules are tuned for a pre-defined signal level the attempt to maintain loudness at a desired level is not always successful or comes at the cost of excessive reduction in signal dynamic range. In this paper we present the components of a new multi stage Audio Loudness Control (ALC) algorithm, with each stage optimized to achieve a different objective, that is able to achieve tight control over loudness level while producing a more open and clean sounding audio.

Authors: Vodapally, Balaji; Tiwari, Brijesh Singh; Sinha, Deepen
Affiliations: ATC Labs, Noida India; ATC Labs, NJ, US(See document for exact affiliation information.)
AES Convention:131 (October 2011) Paper Number:8490 Import into BibTeX
Subject:Loudness Measurement and Perception

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 131Papers)   /131/8490.pdf

Start a discussion about this paper!