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Y. Huang, SI. C.. Busbridge, and PE. A.. Fryer, "Interactions in a Multiple-Voice-Coil Digital Loudspeaker," J. Audio Eng. Soc., vol. 48, no. 6, pp. 545-552, (2000 June.). doi: Y. Huang, SI. C.. Busbridge, and PE. A.. Fryer, "Interactions in a Multiple-Voice-Coil Digital Loudspeaker," J. Audio Eng. Soc., vol. 48 Issue 6 pp. 545-552, (2000 June.). doi:
Abstract: A 7-bit digital multiple-voice-coil loudspeaker and a constant current driver have been constructed and evaluated. Two's complement coding offers the best compromise between complexity, excessive power consumption, and distortion due to baseline drift. The effect of motion impedance and mutual coupling in a multiple-coil system is found to magnify the effective impedance of an individual coil by its weighting in the binary representation. This effect places an unreasonable demand on the output impedance of the driver unless damping is controlled, which can be achieved most effectively by a short-circuited voice coil. Optimum damping occurs when the damping resistance is equal to the negative resistance of an individual coil.

@article{huang2000interactions,
author={huang, yaxiong and busbridge, simon c. and fryer, peter a.},
journal={journal of the audio engineering society},
title={interactions in a multiple-voice-coil digital loudspeaker},
year={2000},
volume={48},
number={6},
pages={545-552},
doi={},
month={june},} @article{huang2000interactions,
author={huang, yaxiong and busbridge, simon c. and fryer, peter a.},
journal={journal of the audio engineering society},
title={interactions in a multiple-voice-coil digital loudspeaker},
year={2000},
volume={48},
number={6},
pages={545-552},
doi={},
month={june},
abstract={a 7-bit digital multiple-voice-coil loudspeaker and a constant current driver have been constructed and evaluated. two's complement coding offers the best compromise between complexity, excessive power consumption, and distortion due to baseline drift. the effect of motion impedance and mutual coupling in a multiple-coil system is found to magnify the effective impedance of an individual coil by its weighting in the binary representation. this effect places an unreasonable demand on the output impedance of the driver unless damping is controlled, which can be achieved most effectively by a short-circuited voice coil. optimum damping occurs when the damping resistance is equal to the negative resistance of an individual coil.},}

TY - paper
TI - Interactions in a Multiple-Voice-Coil Digital Loudspeaker
SP - 545 EP - 552
AU - Huang, Yaxiong
AU - Busbridge, Simon C.
AU - Fryer, Peter A.
PY - 2000
JO - Journal of the Audio Engineering Society
IS - 6
VO - 48
VL - 48
Y1 - June 2000 TY - paper
TI - Interactions in a Multiple-Voice-Coil Digital Loudspeaker
SP - 545 EP - 552
AU - Huang, Yaxiong
AU - Busbridge, Simon C.
AU - Fryer, Peter A.
PY - 2000
JO - Journal of the Audio Engineering Society
IS - 6
VO - 48
VL - 48
Y1 - June 2000
AB - A 7-bit digital multiple-voice-coil loudspeaker and a constant current driver have been constructed and evaluated. Two's complement coding offers the best compromise between complexity, excessive power consumption, and distortion due to baseline drift. The effect of motion impedance and mutual coupling in a multiple-coil system is found to magnify the effective impedance of an individual coil by its weighting in the binary representation. This effect places an unreasonable demand on the output impedance of the driver unless damping is controlled, which can be achieved most effectively by a short-circuited voice coil. Optimum damping occurs when the damping resistance is equal to the negative resistance of an individual coil.