Nonlinear filtered-X second-order adaptive volterra filters for listening-room compensation. Fuster, L., de Diego , M., Ferrer, M., Gonzalez, A., & Pinero, G. In 2015 23rd European Signal Processing Conference (EUSIPCO), pages 669-673, Aug, 2015. Paper doi abstract bibtex The presence of nonlinearities as well as reverberation effects severely degrades the audio quality in sound reproduction systems. In this context, many adaptive strategies have been developed to compensate for room effects. However, when nonlinear distortion becomes significant, room equalization requires the introduction of suitable solutions to tackle this problem. Linearization of loudspeakers has been deeply investigated but its combination with room equalization systems may not be so straightforward, mainly when the nonlinearities present memory. In this paper, the nonlinear system has been modeled as a Volterra filter that represents the loudspeaker tandemly connected to a linear filter that corresponds to the electroacoustic path including the enclosure and the microphone setup. Based on this structure, we introduce a nonlinear filtered-x second-order adaptive Volterra filter that uses the virtual path concept to preprocess the audio signals. Simulation results validate the performance of the new approach.
@InProceedings{7362467,
author = {L. Fuster and M. {de Diego} and M. Ferrer and A. Gonzalez and G. Pinero},
booktitle = {2015 23rd European Signal Processing Conference (EUSIPCO)},
title = {Nonlinear filtered-X second-order adaptive volterra filters for listening-room compensation},
year = {2015},
pages = {669-673},
abstract = {The presence of nonlinearities as well as reverberation effects severely degrades the audio quality in sound reproduction systems. In this context, many adaptive strategies have been developed to compensate for room effects. However, when nonlinear distortion becomes significant, room equalization requires the introduction of suitable solutions to tackle this problem. Linearization of loudspeakers has been deeply investigated but its combination with room equalization systems may not be so straightforward, mainly when the nonlinearities present memory. In this paper, the nonlinear system has been modeled as a Volterra filter that represents the loudspeaker tandemly connected to a linear filter that corresponds to the electroacoustic path including the enclosure and the microphone setup. Based on this structure, we introduce a nonlinear filtered-x second-order adaptive Volterra filter that uses the virtual path concept to preprocess the audio signals. Simulation results validate the performance of the new approach.},
keywords = {adaptive filters;audio signal processing;loudspeakers;nonlinear distortion;nonlinear filters;nonlinear filtered-X second-order adaptive Volterra filters;listening-room compensation;reverberation effects;audio quality;sound reproduction systems;adaptive strategy;nonlinear distortion;room equalization;loudspeaker linearization;room equalization systems;linear filter;electroacoustic path;microphone setup;virtual path concept;audio signal preprocessing;Signal processing algorithms;Nonlinear distortion;Loudspeakers;Kernel;Europe;Adaptive systems;Nonlinear systems;Adaptive equalization;Volterra filters;nonlinear distortions;Virtual channel},
doi = {10.1109/EUSIPCO.2015.7362467},
issn = {2076-1465},
month = {Aug},
url = {https://www.eurasip.org/proceedings/eusipco/eusipco2015/papers/1570104917.pdf},
}
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