Spice Simulation of a Loudspeaker with Thiele Small Parameters
On
http://micka.de/org/en/introduction.php
you can find an interesting approach to use TSP within Spice. The recalculation is done within the circuit file:
http://micka.de/org/en/download/spice-tsp_en.pdf
It is demonstrated with LTSpice. For your own examination download
http://micka.de/org/download/spice-tsp.asc.zip
---------- Spice File ------------------------------
* C:\***
V1 Vin 0 PULSE(0 1 0 1n 1n 50m 100m) AC 1
Rg N001 Vin {Rg}
Re N003 N002 {Re}
Res N003 0 {Res}
Cmes N003 0 {Cmes}
Lces N003 0 {Lces}
Cmep N004 N005 {Cmep}
Lceb N005 0 {Lceb}
Rel N004 N003 {Rel}
C1 N005 0 1.8µ
Le N002 N001 {Le}
.ac oct 300 10 10k
;tran 150m
.param ws=2*3.14*fs
.param c=345 rho=1.18
.param Cas=Vas/(rho*c*c)
.param wb=h*ws
.param Cmes=Qes/(ws*Re)
.param Lces=1/(ws*ws*Cmes)
.param Res=Qms/(ws*Cmes)
.param Lceb=Lces*Cab/Cas
.param Cmep=1/(wb*wb*Lceb)
.param Rel=1/(wb*Cmep*Ql)
.param Qes=Qts*Qms/(Qms-Qts)
.param Cab=Vb/(rho*c*c)
.param fs=26.0 Vas=109 Qts=0.33 Qms=2.23 Re=5.96 Le=0.53m Rg=1m
.param Vb=40.0 Ql=4.5 h=1.18
.backanno
.end
---------- end ------------------------------------
____________
Peter