Apparent Apex

Ureda MS. Apparent Apex. In: AES Convention 102. Audio Engineering Society; 1997. Paper 4467. Available from: https://aes.org/publications/elibrary-page/?id=7312

@inproceedings{Ureda1997_7312,
  author = {Ureda, Mark S.},
  title = {{Apparent Apex}},
  booktitle = {AES Convention 102},
  note = {Paper 4467},
  year = {1997},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=7312}
}

TY  - CPAPER
TI  - Apparent Apex
AU  - Ureda, Mark S.
T2  - AES Convention 102
M1  - Paper 4467
PY  - 1997
DA  - 1997/03/06
UR  - https://aes.org/publications/elibrary-page/?id=7312
PB  - Audio Engineering Society
LA  - en
AB  - This paper presents the apparent apex of a horn and how it relates to directivity response measurement. Several mathematical models are used to relate horn size, coverage angles, frequency, microphone distance, and measurement error. These show that directivity error is directly related to the length of a horn and inversely related to measurement distance. An empirically derived error-distance equation estimates the error. In general, far-field performance for many horns can be obtained at a measurement distance of approximately eight times the length of the horn.
ER  -