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"pixelated" voice

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"pixelated" voice

Postby vince incredible » Mon Aug 27, 2012 1:52 pm

hi all, and thanx fr looking at this post.. ;-)

so, you know when there's, for example, a bad guy on the telly and his voice is all slowed down and grainy sounding to protect his identity (couldn't spell anonymity !!)... how would one go about achieving this effect ?
Any ideas ?
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Re: "pixelated" voice

Postby Richie Royale » Mon Aug 27, 2012 2:19 pm

Pitch shifting the audio whilst retaining the timing is one way. You could also send the vocal to a pitch shifter effect. The granulated sound can be achieved using a bit crusher or other sample rate reducer.
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Re: "pixelated" voice

Postby NunoT » Mon Aug 27, 2012 2:44 pm

Remember however (if hiding the original voice is important) that if the voice's audio is very clean and isolated from other sound material, it will be quite easy to pitch shift it up back to its original frequency and thus eventually recognize the speaker. Some (not tested) ideas:
- One way you can avoid this should be to complicate the edting process a bit, like using serveral effects on the voice to make it harder to be reversible.
- Another solution could be to mix the spoken voice with other audio (like some strong background noise or some music), that should help to complicate the reverse process in order to have the original voice clean and clear.

Anyway the best is always to do the "reverse tests" in the end and check if it's too easy to get back to the original audio.
Good luck! :-)
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Re: "pixelated" voice

Postby vince incredible » Tue Aug 28, 2012 12:32 pm

thanks a bunch, both of you.... pass me the speedos, I'm diving in ;-)
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Re: "pixelated" voice

Postby Tartaruga » Mon Sep 03, 2012 8:07 am

Hi
I don’t know if your intention is to change your own voice,or try to recover a normal one from a treated voice,but,if your intention is to change yours(in a way that’s difficult to retrieve),I would change it’s frequencies and characteristics first…Like using some heavy EQ filtering(and then apply effects)…That way,even if someone manage to go around the effects(pitch shifting,harmonizer,etc),he will face a voice that’s very different from yours in the first place...
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Re: "pixelated" voice

Postby vince incredible » Mon Sep 03, 2012 2:32 pm

thanks, Tartaruga... extra info never comes in wrong ;-)
but, no, it's nothing serious, no police involvement etc... i just liked that sound for a spoken vocal in a song I'm busy with...
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Re: "pixelated" voice

Postby Tartaruga » Mon Sep 03, 2012 4:12 pm

Hi
No problem,you’re welcome!

Cheers.
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