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Cylon/Voice Modulation
Posted: Thu Dec 21, 2006 12:28 pm
by kradsith
Would anyone have any code examples of modulating a voice input with sin wave. Alla Cylon.
Cheers,
kradsith
Posted: Thu Dec 21, 2006 4:55 pm
by frank
This code will do a basic modulation of the input with a sin wave. It generates the sin wave rather than using the built in LFOs as we want a higher frequency than the LFOs will produce.
The result really should be filtered to give a true Cylon sound but that is left as an exercise for the student
Code: Select all
equ s reg10
equ c reg11
equ freq reg12
;
skp run,start
clr ; Clear ACC
wrax s,0 ; Write 0 to sin reg
sof 0,0.5 ; 0.5 -> ACC
wrax c,0 ; Write 0.5 to cos reg
;
start:
;
clr
rdax pot0, 0.05 ; Read pot 0, scale to adjust max speed
wrax freq, 0 ; Save the freq coefficient
;
; Do the SIN calculation
rdax c, 1.0 ; COS -> ACC
mulx freq ; COS*fcoeff
rdax s, 1.0 ; +SIN
wrax s,0 ; Write it back
;
; Do the COS calculation, -SIN in ACC
rdax s, -1.0
mulx freq
rdax c, 1.0
wrax c, 0
;
; Modulate the inputs and write them to the DACs
ldax adcl
mulx s
wrax dacl,0
ldax adcr
mulx s
wrax dacr,0
Posted: Thu Jan 04, 2007 5:54 pm
by kradsith
Thanks Frank!!
Worked like a hot damb once I got a pitch shift and High pass filter intergrated.
Cheers,
Posted: Sun Jan 06, 2008 2:33 pm
by Markus
Kradsith,
Can you post your code? I heard that the Cylon voices were generated with EMS Vocoder and a ring-modulator and I'm curious to hear your results.
Marek
Posted: Thu Jan 31, 2008 4:01 pm
by BazookaJo
Could anyone tell me how to do this through software using a 3rd generation language?
Posted: Wed Feb 20, 2008 6:36 am
by Markus
Cylon voice implementation with a microcontroller:
http://www.elektor.com/magazines/2008/m ... 2560.lynkx
Marek
Posted: Fri Feb 22, 2008 2:05 am
by BazookaJo
Hi there - does anyone know if this will actually sound like a Cylon style voice i.e. a vocoder style simple (mono-pitched) sawtooth-wave sound, or is it just another ring modulator style voice?
Many thanks
Posted: Mon Mar 03, 2008 4:50 am
by Markus
I wouldn't expect much since it uses ATtiny45 (which has nothing to do with DSP). It's rather a toy and not a studio effect.
Marek