I’m new to this and have just downloaded digital audio editor with the specific aim of producing a dalek sounding voice.
Could someone please suggest which I effect I need to load to make the voice sound like a dalek.
Thank-you.
Audacity 1.3.12 - Vocoder.
You need to make two mono tracks - one with the original voice and one with a low frequency wave.
Make the two tracks into a mono track (click on the name of the upper track and select “Make Stereo Track”)
Apply the vocoder effect.
As a rough starting point, try using a square wave with a frequency of 30 Hz as the lower of the two mono tracks.
Here’s an example of Peter Frampton singing through his guitar. Same tool.
http://www.splendad.com/ads/show/1752-GEICO-Peter-Frampton
Koz
Frequency modulated, (not amplitude modulated), with a 37Hz square wave,
followed by a double dose of leveller on the maximum setting, then boost the 500-1500Hz band by about 10db.
Daleks and Davros on Youtube for comparison … http://www.youtube.com/watch?v=TXrUyOurnOI
[those upset by bad acting and cheapo special effects shouldn’t watch 
]
The vocoder effect is more Cylon than Dalek, (I’m ashamed I can tell the difference 
).
You could also try using the “Nyquist Prompt” from the Effect menu and entering this code:
(mult s (hzosc 35))
(this code produces Amplitude Modulation)
This sample uses the Leveller effect, followed by the Nyquist prompt followed by a little bit of GVerb:
That is much closer than my attempt, (it’s been some time since I heard a dalek).
However I think yours is even better if mixed with a copy delayed by 3 milliseconds: it gives a comb (down a tube) effect …
BTW I also boosted the 750 - 1500Hz band, and used a little (4/100) ANWIDA reverb on the “small room bright” setting.
Comb filtering could be added to the Nyquist code with either of these commands:
(scale 0.6 (sim (mult s (hzosc 35))(at-abs 0.003 (cue (mult s (hzosc 35))))))
(comb (mult s (hzosc 35)) 0.1 150)
The first example does exactly as Trebor describes and mixes the processed sound with a copy that is delayed by 3 milliseconds.
The second example uses a comb filter effect where the last number (150) is the filter frequency in Hz and the second to last number (0.1) is the decay time of the resonance in seconds.