In perceptual processing of spatial audio, a typical assumption is that the spatial aspect of a loudspeaker-reproduced sound is determined especially by the energies and the time-aligned dependencies of the audio channels, which are expressed by the real part of the signal covariance matrix, in perceptual frequency bands. In this paper, we propose a generally applicable method to robustly process spatial sound in this domain. This includes an adaptive mixing solution to reach the given target covariance matrix by best usage of the independent components in the input channels, and means to inject the necessary amount of decorrelated sound energy when the target is not achieved otherwise. The method was implemented as a part of a perceptually motivated spatial microphone technique, and numerous further use cases have been identied.

Authors: Vilkamo, Juha; Bäckström, Tom; Kuntz, Achim
Affiliation: Fraunhofer IIS, Erlangen, Germany
AES Conference: 45th International Conference: Applications of Time-Frequency Processing in Audio (March 2012)
Paper Number: 2-6
Publication Date: March 1, 2012
Subject: Representation of Audio

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.