Schedule as of Oct 11, 2022 - subject to change

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Thursday, October 20 • 10:40am - 11:00am
Application of multitone stimulus for detection of non-harmonic distortion in horn drivers

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Some compression drivers have a nonlinear mechanism that may negatively affect their performance and sound quality. This mechanism is related to the complex nonlinear mechanical behavior of the diaphragm at high frequencies, and it is explained by the loss of dynamic stability of the diaphragm. This effect occurs in a frequency range where the diaphragm’s vibration is characterized by breakups. In all works which study the generation of subharmonics, only a single tone or a sweeping single tone is used. Application of a single high-frequency tone results in the generation of subharmonics and non-harmonic spectral components. This work attempts to use the multitone stimulus to reveal a complex nonlinear reaction caused by the diaphragm’s loss of dynamic stability. The complex output spectrum was distinguished from the regular difference intermodulation products. Two different compression drivers were tested, and they exhibited a radically different generation of subharmonic products.

avatar for Balazs Kakonyi

Balazs Kakonyi

Principal Engineer, Transducers, JBL Professional
Balazs Kakonyi is a Principal Transducer Engineer at JBL Professional. Balazs grew up in Hungary and studied Electrical Engineering in Budapest. He has a Masters degree in Electro-Acoustics from Le Mans University in France. He started his professional career interning for Klippel... Read More →
avatar for Alexander Voishvillo

Alexander Voishvillo

Harman Fellow, Acoustics Engineering, Harman Professional
Alexander Voishvillo was born and grew up in Saint Petersburg, Russia where he graduated from the State University of Telecommunications. He worked at Popov Institute for Radio and Acoustics. He designed loudspeakers and studio monitors and did research on loudspeakers and transducers... Read More →

Thursday October 20, 2022 10:40am - 11:00am EDT
  Transducers, Papers Oct 19 & 20