Time varying behaviour of the loudspeaker suspension : displacement level dependency

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The compliance of the loudspeaker suspension is known to depend on the recent excitation level history. Previous investigations have shown that the electrical power as well as displacement and velocity plays a role. In this paper the hypothesis that the changes in compliance are caused mainly by how much the suspension has been stretched, i.e., the maximum displacement, is investigated. For this purpose the changes in compliance are measured when exposing the loudspeaker to different levels and types of electrical excitation signals, as well as mechanical excitation only. For sinusoidal excitation the change in compliance is shown to depend primarily on maximum displacement. But for square pulse excitation the duration of the excitation also plays an important role.
OriginalsprogEngelsk
TitelProceedings of the 127th AES Convention
Antal sider8
UdgiverAudio Engineering Society
Udgivelsesdato2009
ISBN (elektronisk)978-0-937803-71-4
StatusUdgivet

Konference

Konference127th AES Convention
Nummer127
LandUSA
ByNew York
Periode09-10-0912-10-09

Bibliografisk note

Paper nr. 7902

ID: 18697971