Point-Source Loudspeaker Reversely-Attached Acoustic Horn: Its Architecture, Acoustic Characteristics, and Application to HRTF Measurements

Miura T, Muraoka T, Ifukube T. Point-Source Loudspeaker Reversely-Attached Acoustic Horn: Its Architecture, Acoustic Characteristics, and Application to HRTF Measurements. In: AES Convention 128. Audio Engineering Society; 2010. Paper 7991. Available from: https://aes.org/publications/elibrary-page/?id=15288

@inproceedings{Miura2010_15288,
  author = {Miura, Takahiro and Muraoka, Teruo and Ifukube, Tohru},
  title = {{Point-Source Loudspeaker Reversely-Attached Acoustic Horn: Its Architecture, Acoustic Characteristics, and Application to HRTF Measurements}},
  booktitle = {AES Convention 128},
  note = {Paper 7991},
  year = {2010},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15288}
}

TY  - CPAPER
TI  - Point-Source Loudspeaker Reversely-Attached Acoustic Horn: Its Architecture, Acoustic Characteristics, and Application to HRTF Measurements
AU  - Miura, Takahiro
AU  - Muraoka, Teruo
AU  - Ifukube, Tohru
T2  - AES Convention 128
M1  - Paper 7991
PY  - 2010
DA  - 2010/05/06
UR  - https://aes.org/publications/elibrary-page/?id=15288
PB  - Audio Engineering Society
LA  - en
AB  - It is ideal to measure acoustic characteristics by point-source sound. In the case when simultaneous recording of single source by multiple microphones located at under 1 m from the source, it is difficult to regard the loudspeaker as a point-source. In this study, we propose a point-source loudspeaker whose radiation diameter is smaller than 2 cm. The loudspeaker is designed to attach the mouse of hyperbolic horn to the diaphragm of loudspeaker unit. Directional patterns of the prototype was measured at a distance of 50 cm from the radiation point in anechoic chamber. As a result, the difference of directional intensity at the frequency range of 20 - 700 Hz were within 3 dB at any combination of azimuth and elevation. At the frequency range over 700 Hz, difference of azimuthal directional intensity were within 10 dB while that of the elevational ones were within 20 dB.
ER  -