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https://github.com/alsa-project/alsa-tools.git
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60 lines
1.5 KiB
NASM
60 lines
1.5 KiB
NASM
name "5 band EQ"
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include "emu_constants.asm"
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c0 con -0.98485626 0.98502633 0.99034926 -0.99034926
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c1 con -0.95169465 0.95337028 0.93878619 -0.93878619
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c2 con -0.84376963 0.85967945 0.84174451 -0.84174451
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c3 con -0.47720462 0.61368058 0.73503304 -0.73503304
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c4 con -0.28987550 0.11999291 0.72670869 -0.72670869
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scalein sta 0.00013665 0.00134590 0.01265823 0.10000000 0.50000000
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scaleout sta 420.00000000 140.00000000 50.00000000 20.00000000 10.00000000
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in io
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out equ in
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F_100Hz control #0.2,0,#1
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F_316Hz control #0.1,0,#1
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F_1000Hz control #0.1,0,#1
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F_3160Hz control #0.1,0,#1
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F_10000Hz control #0.2,0,#1
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dly0 sta 0 0
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dly1 sta 0 0
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dly2 sta 0 0
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dly3 sta 0 0
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dly4 sta 0 0
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out_tmp dyn
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tmp2 dyn
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tmp dyn
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;;; Band Pass Filter Macro:
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BPF macro OUT , IN , DELAY , COEF , SCALEIN , SCALEOUT , FOO , GAIN
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macs tmp,C_0,SCALEIN,IN
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macs1 tmp,tmp,DELAY,FOO
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macw1 tmp,tmp,DELAY,COEF
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macw1 tmp,tmp,DELAY+1,COEF+1
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macs tmp2,C_0,DELAY+1,COEF+3
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macs DELAY+1,DELAY,C_0,C_0
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macs tmp2,tmp2,tmp,COEF+2
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macs DELAY,tmp,C_0,C_0
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macints tmp2,C_0,tmp2,SCALEOUT
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macs OUT,OUT,tmp2,GAIN
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endm
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macs out_tmp,C_0,C_0,C_0
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BPF out_tmp,in,dly0,c0,scalein,scaleout,C_nmax,F_100Hz
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BPF out_tmp,in,dly1,c1,scalein+1,scaleout+1,C_nmax,F_316Hz
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BPF out_tmp,in,dly2,c2,scalein+2,scaleout+2,C_nmax,F_1000Hz
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BPF out_tmp,in,dly3,c3,scalein+3,scaleout+3,C_nmax,F_3160Hz
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BPF out_tmp,in,dly4,c4,scalein+4,scaleout+4,C_0,F_10000Hz
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macs out,out_tmp,C_0,C_0
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end
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