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MA. SI. Gálvez, D. Menzies, and FI. MA. Fazi, "Dynamic Audio Reproduction with Linear Loudspeaker Arrays," J. Audio Eng. Soc., vol. 67, no. 4, pp. 190-200, (2019 April.). doi: https://doi.org/10.17743/jaes.2019.0007 MA. SI. Gálvez, D. Menzies, and FI. MA. Fazi, "Dynamic Audio Reproduction with Linear Loudspeaker Arrays," J. Audio Eng. Soc., vol. 67 Issue 4 pp. 190-200, (2019 April.). doi: https://doi.org/10.17743/jaes.2019.0007
Abstract: This report describes a dynamic, listener-adaptive, audio reproduction filtering system that allows a listener to move freely in front of a loudspeaker array without degrading perception. The proposed filters allow the delivery of two independent personalized signals to a pair of listeners or a binaural signal to a single listener. The filters are modified in real time according to the listener position. This is obtained by expressing the impulse response of each filter as a network of variable gain-delay elements that are modified so that the filters adapt the reproduction to the listener position, assuming that each loudspeaker behaves as a point-source free-field monopole. The paper introduces the filter formulation together with the signal processing scheme for a real-time implementation and measured performance for a listener-adaptive 28-loudspeaker linear array using an optical head-tracking system. The filter that controls the equalization of the acoustic pressure at the listener’s ears is an FIR filter that can be adjusted in real time. The measured personal audio performance shows that it is possible to obtain about 30 dB of crosstalk cancellation for two listeners between 300 Hz and 3 kHz. For binaural audio reproduction, the crosstalk cancellation between both of the listener’s ears is above 10 dB at 1 kHz and grows to 20 dB at 8 kHz.

@article{gálvez2019dynamic,
author={gálvez, marcos f. simón and menzies, dylan and fazi, filippo maria},
journal={journal of the audio engineering society},
title={dynamic audio reproduction with linear loudspeaker arrays},
year={2019},
volume={67},
number={4},
pages={190-200},
doi={https://doi.org/10.17743/jaes.2019.0007},
month={april},} @article{gálvez2019dynamic,
author={gálvez, marcos f. simón and menzies, dylan and fazi, filippo maria},
journal={journal of the audio engineering society},
title={dynamic audio reproduction with linear loudspeaker arrays},
year={2019},
volume={67},
number={4},
pages={190-200},
doi={https://doi.org/10.17743/jaes.2019.0007},
month={april},
abstract={this report describes a dynamic, listener-adaptive, audio reproduction filtering system that allows a listener to move freely in front of a loudspeaker array without degrading perception. the proposed filters allow the delivery of two independent personalized signals to a pair of listeners or a binaural signal to a single listener. the filters are modified in real time according to the listener position. this is obtained by expressing the impulse response of each filter as a network of variable gain-delay elements that are modified so that the filters adapt the reproduction to the listener position, assuming that each loudspeaker behaves as a point-source free-field monopole. the paper introduces the filter formulation together with the signal processing scheme for a real-time implementation and measured performance for a listener-adaptive 28-loudspeaker linear array using an optical head-tracking system. the filter that controls the equalization of the acoustic pressure at the listener’s ears is an fir filter that can be adjusted in real time. the measured personal audio performance shows that it is possible to obtain about 30 db of crosstalk cancellation for two listeners between 300 hz and 3 khz. for binaural audio reproduction, the crosstalk cancellation between both of the listener’s ears is above 10 db at 1 khz and grows to 20 db at 8 khz.},}

TY - paper
TI - Dynamic Audio Reproduction with Linear Loudspeaker Arrays
SP - 190 EP - 200
AU - Gálvez, Marcos F. Simón
AU - Menzies, Dylan
AU - Fazi, Filippo Maria
PY - 2019
JO - Journal of the Audio Engineering Society
IS - 4
VO - 67
VL - 67
Y1 - April 2019 TY - paper
TI - Dynamic Audio Reproduction with Linear Loudspeaker Arrays
SP - 190 EP - 200
AU - Gálvez, Marcos F. Simón
AU - Menzies, Dylan
AU - Fazi, Filippo Maria
PY - 2019
JO - Journal of the Audio Engineering Society
IS - 4
VO - 67
VL - 67
Y1 - April 2019
AB - This report describes a dynamic, listener-adaptive, audio reproduction filtering system that allows a listener to move freely in front of a loudspeaker array without degrading perception. The proposed filters allow the delivery of two independent personalized signals to a pair of listeners or a binaural signal to a single listener. The filters are modified in real time according to the listener position. This is obtained by expressing the impulse response of each filter as a network of variable gain-delay elements that are modified so that the filters adapt the reproduction to the listener position, assuming that each loudspeaker behaves as a point-source free-field monopole. The paper introduces the filter formulation together with the signal processing scheme for a real-time implementation and measured performance for a listener-adaptive 28-loudspeaker linear array using an optical head-tracking system. The filter that controls the equalization of the acoustic pressure at the listener’s ears is an FIR filter that can be adjusted in real time. The measured personal audio performance shows that it is possible to obtain about 30 dB of crosstalk cancellation for two listeners between 300 Hz and 3 kHz. For binaural audio reproduction, the crosstalk cancellation between both of the listener’s ears is above 10 dB at 1 kHz and grows to 20 dB at 8 kHz.