Abstract
Specifying the performance of audio amplifiers is typically done by playing sine waves into a
pure ohmic load. However real loudspeaker impedances are not purely ohmic but characterized
by the mechanical resonance between the mass of the diaphragm and the compliance of its
suspension which vary from driver to driver. Therefore, a loudspeaker emulator capable of
adjusting its impedance to that of a given driver is desired for measurement purposes. This
paper proposes a loudspeaker emulator circuit for small signals. Simulations and experimental
results are compared and show that it is possible to emulate the loudspeaker impedance with
an electric circuit and that its resonance frequency can be changed by tuning two resistors.
| Original language | English |
|---|---|
| Journal | Journal of Audio Engineering Society |
| Volume | 62 |
| Issue number | 10 |
| Pages (from-to) | 676-682 |
| ISSN | 1549-4950 |
| Publication status | Published - 2014 |