AES E-Library

Directional Audio Coding: Virtual Microphone-Based Synthesis and Subjective Evaluation

Directional Audio Coding (DirAC) is a perceptual method for reproducing spatial audio using existing microphones and surround sound configurations. In the analysis phase, the direction and diffuseness are continuously estimated in frequency bands. This information, together with input signals remapped into a set of virtual microphones corresponding to the reproduction configuration, is used to recreate the spatial audio experience in the listening setup. Subjective listening tests in both an anechoic chamber and in a standard listening room showed that the mean opinion scores were almost always good to excellent, which is higher quality than traditional techniques.

Authors: Vilkamo, Juha; Lokki, Tapio; Pulkki, Ville
Affiliations: Department of Signal Processing and Acoustics, Helsinki University of Technology, Finland; Department of Media Technology, Helsinki University of Technology, Finland(See document for exact affiliation information.)
JAES Volume 57 Issue 9 pp. 709-724; September 2009 Import into BibTeX

Click to purchase paper or login as an AES member. If your company or school subscribes to the AES Journal then you can look for this paper in the institutional version of the Online Journal. 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 JAES57)   /jaes57/9/pg709.pdf

Start a discussion about this paper!