Active Vibration Control of Breakup Modes in Loudspeaker Diaphragms

Cardenas W. Active Vibration Control of Breakup Modes in Loudspeaker Diaphragms. In: AES Convention 142. Audio Engineering Society; 2017. Paper 9693. Available from: https://aes.org/publications/elibrary-page/?id=18571

@inproceedings{Cardenas2017_18571,
  author = {Cardenas, William},
  title = {{Active Vibration Control of Breakup Modes in Loudspeaker Diaphragms}},
  booktitle = {AES Convention 142},
  note = {Paper 9693},
  year = {2017},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=18571}
}

TY  - CPAPER
TI  - Active Vibration Control of Breakup Modes in Loudspeaker Diaphragms
AU  - Cardenas, William
T2  - AES Convention 142
M1  - Paper 9693
PY  - 2017
DA  - 2017/05/06
UR  - https://aes.org/publications/elibrary-page/?id=18571
PB  - Audio Engineering Society
LA  - en
AB  - One of the factors that contribute to the degradation of the sound quality of the loudspeakers are the breakup modes of the membrane since they cause complex directivity patterns, peaks, and deeps in the frequency response. This paper presents an active vibration control simulation applied to a 2D Finite Element model of a loudspeaker loaded by a fluid domain to demonstrate an innovative alternative to reduce the amplitude of the breakup modes of loudspeaker diaphragms, improving substantially the mechanical and acoustical performance. The benefits of the controlled system are demonstrated in terms of the acceleration response of the cone and the acoustic directivity.
ER  -