* SPICE netlist
E1 N009 0 EQ 0 1
C1 OUT N009 {Cspk} Rser={Rspk}
L1 OUT 0 {Lspk} Rser=0
V1 IN 0 ac 1
R1 N005 IN {R1}
R2 N001 N005 {R1}
R3 N004 IN {R2}
R4 N002 N001 {R2}
R5 N003 N001 {R3}
R6 EQ N003 {R3}
C2 EQ N002 {C2}
C3 N001 N004 {C2}
C4 N005 0 {C1}
C5 N003 0 {C3}
V2 N007 0 {R1/1K}
V3 N010 0 {R2/1K}
V4 N012 0 {R3/1K}
V5 N008 0 {C1/1u}
V6 N011 0 {C3/1u}
V7 N006 0 {Vb}
XU1 0 N001 NC_01 NC_02 EQ level.1 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
.param Vb = Vas / ((Qtc/Qts) * (Qtc/Qts) - 1.)
.param Fc = Fs * sqrt(( Vas/Vb) + 1.)
.param Lspk = 1
.param Cspk = 1. / (39.47842 * Fc * Fc * Lspk)
.param Rspk = 6.2831853 * Fc / Qtc
.param Fs =95
.param Qts=0.472
.param Vas=0.04481
.ac oct 10 10 10K
.param k = (Fc0/Fcx-Qt0/Qtx)/(Qt0/Qtx-Fcx/Fc0)
.param R1 = (1/(2*pi*Fc0*C2*(2*Qt0*(1+k))))
.param R2 = 2*k*R1
.param R3 = R1*(Fc0/Fcx)**2
.param C1 = C2*(2*Qt0*(1+k))**2
.param C3 = C1*(Fcx/Fc0)**2
;.param gain=40*Log10(Fc0/Fcx) ; FYI
.param Qtc = 0.7071
.param C2=.047u
.param Fc0 = Fc ; Fc untransformed
.param Qt0 = Qtc ; Qtc untransformed
.param Fcx = 80 ; Fc transformed(chosen on spectral analysis of my voice)
.param Qtx = 0.7071 ; Qtc transformed

* LTspice schematic (.asc)
Version 4
SHEET 1 1456 720
WIRE -24 -344 -56 -344
WIRE 88 -344 56 -344
WIRE 200 -344 152 -344
WIRE -56 -248 -56 -344
WIRE -40 -248 -56 -248
WIRE 72 -248 40 -248
WIRE 104 -248 72 -248
WIRE 200 -248 200 -344
WIRE 200 -248 184 -248
WIRE 72 -232 72 -248
WIRE -312 -200 -344 -200
WIRE -184 -200 -232 -200
WIRE -72 -200 -120 -200
WIRE 72 -152 72 -168
WIRE -344 -104 -344 -200
WIRE -344 -104 -424 -104
WIRE -328 -104 -344 -104
WIRE -216 -104 -248 -104
WIRE -168 -104 -216 -104
WIRE -72 -104 -72 -200
WIRE -72 -104 -88 -104
WIRE -56 -104 -56 -248
WIRE -56 -104 -72 -104
WIRE 40 -104 -56 -104
WIRE -424 -88 -424 -104
WIRE -216 -88 -216 -104
WIRE 200 -88 200 -248
WIRE 200 -88 104 -88
WIRE 232 -88 200 -88
WIRE 40 -72 24 -72
WIRE -424 8 -424 -8
WIRE -216 8 -216 -24
WIRE 392 40 376 40
WIRE 488 40 472 40
WIRE -712 104 -728 104
WIRE -616 104 -632 104
WIRE -392 104 -408 104
WIRE -296 104 -312 104
WIRE 568 200 440 200
WIRE 728 200 632 200
WIRE 440 216 440 200
WIRE 728 216 728 200
WIRE -712 232 -728 232
WIRE -616 232 -632 232
WIRE -392 232 -408 232
WIRE -296 232 -312 232
WIRE 232 232 232 -88
WIRE 392 232 232 232
WIRE 440 312 440 296
WIRE 728 312 728 296
WIRE -712 360 -728 360
WIRE -616 360 -632 360
FLAG 392 280 0
FLAG 440 312 0
FLAG 728 200 OUT
FLAG 728 312 0
FLAG -424 8 0
FLAG 72 -152 0
FLAG -216 8 0
FLAG 24 -72 0
FLAG -728 104 0
FLAG -728 232 0
FLAG -728 360 0
FLAG -408 104 0
FLAG -408 232 0
FLAG 232 -88 EQ
FLAG 376 40 0
FLAG -424 -104 IN
DATAFLAG -784 1648 ""
DATAFLAG -784 1776 ""
DATAFLAG -784 1904 ""
DATAFLAG -464 1648 ""
DATAFLAG -464 1776 ""
DATAFLAG 320 1584 ""
SYMBOL e 440 200 R0
SYMATTR InstName E1
SYMATTR Value 1
SYMBOL cap 632 184 R90
SYMATTR InstName C1
SYMATTR Value {Cspk}
SYMATTR Value2 Rser={Rspk}
SYMBOL ind 712 200 R0
SYMATTR InstName L1
SYMATTR Value {Lspk}
SYMATTR SpiceLine Rser=0
SYMBOL voltage -424 -104 R0
SYMATTR InstName V1
SYMATTR Value ac 1
SYMBOL res -232 -120 R90
SYMATTR InstName R1
SYMATTR Value {R1}
SYMBOL res -72 -120 R90
SYMATTR InstName R2
SYMATTR Value {R1}
SYMBOL res -216 -216 R90
SYMATTR InstName R3
SYMATTR Value {R2}
SYMBOL res 72 -360 R90
SYMATTR InstName R4
SYMATTR Value {R2}
SYMBOL res 56 -264 R90
SYMATTR InstName R5
SYMATTR Value {R3}
SYMBOL res 200 -264 R90
SYMATTR InstName R6
SYMATTR Value {R3}
SYMBOL cap 152 -360 R90
SYMATTR InstName C2
SYMATTR Value {C2}
SYMBOL cap -120 -216 R90
SYMATTR InstName C3
SYMATTR Value {C2}
SYMBOL cap -232 -88 R0
SYMATTR InstName C4
SYMATTR Value {C1}
SYMBOL cap 56 -232 R0
SYMATTR InstName C5
SYMATTR Value {C3}
SYMBOL voltage -616 104 R90
SYMATTR InstName V2
SYMATTR Value {R1/1K}
SYMBOL voltage -616 232 R90
SYMATTR InstName V3
SYMATTR Value {R2/1K}
SYMBOL voltage -616 360 R90
SYMATTR InstName V4
SYMATTR Value {R3/1K}
SYMBOL voltage -296 104 R90
SYMATTR InstName V5
SYMATTR Value {C1/1u}
SYMBOL voltage -296 232 R90
SYMATTR InstName V6
SYMATTR Value {C3/1u}
SYMBOL voltage 488 40 R90
SYMATTR InstName V7
SYMATTR Value {Vb}
SYMBOL opamps\\UniversalOpamp2 72 -88 R0
SYMATTR InstName U1
SYMATTR InstName level.1