Abstract
It is well known that the resonance frequency of a loudspeaker depends on how it is driven before and
during the measurement. Measurement done right after exposing it to high levels of electrical power and/or
excursion giver lower values than what can be measured when the speaker is cold. This paper investigates the
changes in compliance the driving signal can cause, this includes low level short duration measurements of the
resonance frequency as well as high power long duration measurements of the non-linearity of the suspension.
It is found that at low levels the suspension softens but recovers quickly. The the high power and long term
measurements affect the non-linearity of the speaker, by incresing the compliance value for all values of
displacement. This level dependency is validated with distortion measurements and it is demonstrated how
improved accuracy of the non-linear model can be obtained by including the level dependency.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 125th Audio Engineering Society |
| Number of pages | 9 |
| Publication date | 2008 |
| Publication status | Published - 2008 |
| Event | 125th Audio Engineering Society Convention - San Francisco, CA, United States Duration: 2 Oct 2008 → 5 Oct 2008 http://www.aes.org/events/125/ |
Conference
| Conference | 125th Audio Engineering Society Convention |
|---|---|
| Country/Territory | United States |
| City | San Francisco, CA |
| Period | 02/10/2008 → 05/10/2008 |
| Internet address |