Amplitude and Frequency Modulation Distortions of a Loudspeaker

Suzuki H, Shibata S. Amplitude and Frequency Modulation Distortions of a Loudspeaker. J Audio Eng Soc. 1984;32(4):246-253. Available from: https://aes.org/publications/elibrary-page/?id=4510

@article{Suzuki1984_4510,
  author = {Suzuki, Hideo and Shibata, Shigenori},
  title = {{Amplitude and Frequency Modulation Distortions of a Loudspeaker}},
  journal = {Journal of the Audio Engineering Society},
  volume = {32},
  number = {4},
  pages = {246--253},
  year = {1984},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=4510}
}

TY  - JOUR
TI  - Amplitude and Frequency Modulation Distortions of a Loudspeaker
AU  - Suzuki, Hideo
AU  - Shibata, Shigenori
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 32
IS  - 4
SP  - 246
EP  - 253
PY  - 1984
DA  - 1984/04/06
UR  - https://aes.org/publications/elibrary-page/?id=4510
PB  - Audio Engineering Society
LA  - en
AB  - The measurement techniques and the causes of amplitude and frequency modulation distortions are discussed using a two-way coaxial-type loudspeaker system. The distortion due to amplitude modulation is caused by the dependence of the radiation efficiency of the high-frequency driver on the displacement of the diaphragm of the low-frequency driver. The distortion due to frequency modulation seems to be produced when the high-frequency sound has a nonzero particle velocity in the axis direction at the surface of the low-frequency driver diaphragm. The symmetry of the sidebands of the summed modulation distortion (intermodulation distortion) indicates that the amplitude and frequency modulation distortions are 90° out of phase with each other.
ER  -