AES E-Library

Adaptive Audio Equalization of Rooms Based on a Technique of Transparent Insertion of Acoustic Probe Signals

This paper presents an enhanced method performing real time adaptive equalization of room acoustics in the frequency domain. The method obtains the frequency response of the room by means of transparent insertion of a certain number of acoustic probe signals into the main audio spectrum. The opportunities for the insertion of tones are identified by means of a spectral analysis of the audio signal based on a psychoacoustic model of frequency masking. This enhanced version of the adaptive equalizer will be explained as well as its real time implementation on a TMS320C6713 DSP based platform. Results of the acoustic tests will be discussed and conclusions about global performance will be presented.

Authors: Ferreira, Aníbal J. S.; Leite, António; Pinto, Francisco; Rocha, Ariel F.
Affiliations: FEUP/INESC; INESC Porto(See document for exact affiliation information.)
AES Convention:120 (May 2006) Paper Number:6738 Import into BibTeX
Subject:Room and Architectural Acoustics

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 120Papers)   /120/6738.pdf

Start a discussion about this paper!