AES E-Library

MA. S.. Ureda, "Apparent Apex Theory," Paper 1403, (1978 November.). doi: MA. S.. Ureda, "Apparent Apex Theory," Paper 1403, (1978 November.). doi:
Abstract: Current methods of measuring polar response curves are not sufficiently defined to yield representative farfield performance. It is shown that the conventionally measured -6 dB angle can be dependent on the point of rotation of the horn and the distance to the measuring microphone. A new methodology determines a point of rotation, the Apparent Apex, such that the measured coverage angle becomes independent of the distance to the microphone, thus allowing observation of farfield polar characteristics at close proximities.

@article{ureda1978apparent,
author={ureda, mark s.},
journal={journal of the audio engineering society},
title={apparent apex theory},
year={1978},
volume={},
number={},
pages={},
doi={},
month={november},} @article{ureda1978apparent,
author={ureda, mark s.},
journal={journal of the audio engineering society},
title={apparent apex theory},
year={1978},
volume={},
number={},
pages={},
doi={},
month={november},
abstract={current methods of measuring polar response curves are not sufficiently defined to yield representative farfield performance. it is shown that the conventionally measured -6 db angle can be dependent on the point of rotation of the horn and the distance to the measuring microphone. a new methodology determines a point of rotation, the apparent apex, such that the measured coverage angle becomes independent of the distance to the microphone, thus allowing observation of farfield polar characteristics at close proximities.},}

TY - paper
TI - Apparent Apex Theory
SP - EP -
AU - Ureda, Mark S.
PY - 1978
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - November 1978 TY - paper
TI - Apparent Apex Theory
SP - EP -
AU - Ureda, Mark S.
PY - 1978
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - November 1978
AB - Current methods of measuring polar response curves are not sufficiently defined to yield representative farfield performance. It is shown that the conventionally measured -6 dB angle can be dependent on the point of rotation of the horn and the distance to the measuring microphone. A new methodology determines a point of rotation, the Apparent Apex, such that the measured coverage angle becomes independent of the distance to the microphone, thus allowing observation of farfield polar characteristics at close proximities.