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A. Marques, and D. Freitas, "On the Necessary Delay for the Design of Causal and Stable Recursive Inverse Filters for Loudspeaker Equalization," Paper 7537, (2008 October.). doi: A. Marques, and D. Freitas, "On the Necessary Delay for the Design of Causal and Stable Recursive Inverse Filters for Loudspeaker Equalization," Paper 7537, (2008 October.). doi:
Abstract: The authors have developed and applied a novel approach to the equalization of non-minimum phase loudspeaker systems, based on the design of Infinite Impulse Response (recursive) inverse filters. In this paper the results and improvements attained on this novel IIR filter design method are presented. A special attention has been given to the delay of the equalized system. The boundaries to be posed on the search space of the delay for a causal and stable inverse filter, to be used in the nonlinear least squares minimization routine, are studied, identified and related with the phase response of a test system (to be equalized) and with the order of the inverse filter; finally, these observations and relations are extended and applied to multi-way loudspeaker systems, demonstrating the connection of the lower and upper bounds of the delay with the loudspeaker’s crossover filters phase response and inverse filter order.

@article{marques2008on,
author={marques, avelino and freitas, diamantino},
journal={journal of the audio engineering society},
title={on the necessary delay for the design of causal and stable recursive inverse filters for loudspeaker equalization},
year={2008},
volume={},
number={},
pages={},
doi={},
month={october},} @article{marques2008on,
author={marques, avelino and freitas, diamantino},
journal={journal of the audio engineering society},
title={on the necessary delay for the design of causal and stable recursive inverse filters for loudspeaker equalization},
year={2008},
volume={},
number={},
pages={},
doi={},
month={october},
abstract={the authors have developed and applied a novel approach to the equalization of non-minimum phase loudspeaker systems, based on the design of infinite impulse response (recursive) inverse filters. in this paper the results and improvements attained on this novel iir filter design method are presented. a special attention has been given to the delay of the equalized system. the boundaries to be posed on the search space of the delay for a causal and stable inverse filter, to be used in the nonlinear least squares minimization routine, are studied, identified and related with the phase response of a test system (to be equalized) and with the order of the inverse filter; finally, these observations and relations are extended and applied to multi-way loudspeaker systems, demonstrating the connection of the lower and upper bounds of the delay with the loudspeaker’s crossover filters phase response and inverse filter order.},}

TY - paper
TI - On the Necessary Delay for the Design of Causal and Stable Recursive Inverse Filters for Loudspeaker Equalization
SP - EP -
AU - Marques, Avelino
AU - Freitas, Diamantino
PY - 2008
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2008 TY - paper
TI - On the Necessary Delay for the Design of Causal and Stable Recursive Inverse Filters for Loudspeaker Equalization
SP - EP -
AU - Marques, Avelino
AU - Freitas, Diamantino
PY - 2008
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2008
AB - The authors have developed and applied a novel approach to the equalization of non-minimum phase loudspeaker systems, based on the design of Infinite Impulse Response (recursive) inverse filters. In this paper the results and improvements attained on this novel IIR filter design method are presented. A special attention has been given to the delay of the equalized system. The boundaries to be posed on the search space of the delay for a causal and stable inverse filter, to be used in the nonlinear least squares minimization routine, are studied, identified and related with the phase response of a test system (to be equalized) and with the order of the inverse filter; finally, these observations and relations are extended and applied to multi-way loudspeaker systems, demonstrating the connection of the lower and upper bounds of the delay with the loudspeaker’s crossover filters phase response and inverse filter order.