AES Store

Journal Forum

Reflecting on Reflections - June 2014
1 comment

Quiet Thoughts on a Deafening Problem - May 2014
1 comment

Perceptual Effects of Dynamic Range Compression in Popular Music Recordings - January 2014
5 comments

Access Journal Forum

AES E-Library

Efficient Rendering of Directional Sound Sources in Wave Field Synthesis

Wave Field synthesis (WFS) is a spatial audio reproduction technique that uses arrays of loudspeakers for the physical creation of the sound field of a virtual source. Besides basic source types such as monopoles, the reproduction of virtual sources with angle- and frequency-dependent directivity characteristics attracts increasing interest. While several synthesis approaches for directional sources have been proposed in recent years, the corresponding audio signal processing has not been considered so far. However, since directional sources typically require a nontrivial filtering operation for each combination of a virtual source and a loudspeaker, straightforward implementation creates major complexity and scalability problems. This paper proposes an efficient processing structure for rendering directional sources using time-frequency signal processing. Integrating the building blocks of a fast convolution method into the WFS rendering algorithm enables the reuse of transform operations, resulting in significant complexity reductions. In this way, this paper demonstrates the advantages of time-frequency processing for a given rendering application by exploiting the performance characteristics of signal processing operations in the two domains.

Authors:
Affiliation:
AES Conference:
Paper Number:
Publication Date:
Subject:

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:

Start a discussion about this paper!


 
Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society