Measurement of Loudspeakers without Using an Anechoic Chamber Utilizing Pulse-Train Measurement Method

Muraoka T, Miura T, Shimura H, Akino H, Ifukube T. Measurement of Loudspeakers without Using an Anechoic Chamber Utilizing Pulse-Train Measurement Method. In: AES Convention 128. Audio Engineering Society; 2010. Paper 8058. Available from: https://aes.org/publications/elibrary-page/?id=15355

@inproceedings{Muraoka2010_15355,
  author = {Muraoka, Teruo and Miura, Takahiro and Shimura, Haruhito and Akino, Hiroshi and Ifukube, Tohru},
  title = {{Measurement of Loudspeakers without Using an Anechoic Chamber Utilizing Pulse-Train Measurement Method}},
  booktitle = {AES Convention 128},
  note = {Paper 8058},
  year = {2010},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15355}
}

TY  - CPAPER
TI  - Measurement of Loudspeakers without Using an Anechoic Chamber Utilizing Pulse-Train Measurement Method
AU  - Muraoka, Teruo
AU  - Miura, Takahiro
AU  - Shimura, Haruhito
AU  - Akino, Hiroshi
AU  - Ifukube, Tohru
T2  - AES Convention 128
M1  - Paper 8058
PY  - 2010
DA  - 2010/05/06
UR  - https://aes.org/publications/elibrary-page/?id=15355
PB  - Audio Engineering Society
LA  - en
AB  - Generally, loudspeakers are measured in an anechoic chamber. However, those chambers are very expensive, which make sound engineer's easy acoustical measurements almost impossible. Thus the authors devised a new measurement without using any anechoic chamber. Traditionally, loudspeakers are measured in an anechoic chamber by installing in a proper speaker enclosure and by driving with swept sinusoidal signal. Loudspeaker's radiated sound is detected with an omni-directional reference microphone, and the output of the microphone is displayed graphically. If a shot-gun microphone is employed in stead of omni directional microphone, anechoic chamber will become un-necessary. Furthermore, if pulse-train is used as a test signal, noise in surrounding circumstance will be reduced by applying synchronous-averaging algorithm. Based upon this idea the authors measured loudspeaker in any acoustical circumstances, and obtained very similar data with that by the traditional method.
ER  -