Title :
Multirate adaptive filtering for immersive audio
Author :
Lim, Jong-Soong ; Kyriakakis, Chris
Author_Institution :
Immersive Audio Lab., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
This paper describes a method for implementing immersive audio rendering filters for single or multiple listeners and loudspeakers. In particular, the paper is focused on the case of single or two listeners with different loudspeaker arrays to determine the weighting vectors for the necessary FIR and IIR filters using the LMS (least-mean-squares) adaptive inverse algorithm. It describes transform-domain LMS adaptive inverse algorithm that is designed for crosstalk cancellation necessary in loudspeaker-based immersive audio rendering. Specifically, each weighting vector of the inverse filter is generated based on psychoacoustic critical band filters and uses the LMS adaptive inverse algorithm to improve performance in the sensitive frequency bands. We also investigate the sensitivity of the listening position under different number of listeners and loudspeakers with various loudspeaker geometries. Performance is measured based on the ipsilateral signal to contralateral signal (crosstalk) ratio that results from the different filter types with and without psychoacoustic critical band filtering
Keywords :
FIR filters; IIR filters; adaptive filters; adaptive signal processing; audio signal processing; crosstalk; filtering theory; inverse problems; least mean squares methods; loudspeakers; FIR filters; IIR filters; crosstalk cancellation; frequency bands; immersive audio rendering filters; inverse filter; ipsilateral signal to contralateral signal ratio; least-mean-squares; listening position sensitivity; loudspeaker arrays; loudspeaker geometries; multirate adaptive filtering; psychoacoustic critical band filtering; psychoacoustic critical band filters; transform-domain LMS adaptive inverse algorithm; weighting vector; weighting vectors; Adaptive arrays; Adaptive filters; Algorithm design and analysis; Crosstalk; Finite impulse response filter; Frequency; IIR filters; Least squares approximation; Loudspeakers; Psychology;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on
Conference_Location :
Salt Lake City, UT
Print_ISBN :
0-7803-7041-4
DOI :
10.1109/ICASSP.2001.940378