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How to make a voice/person unrecognizeable?

Forum Audio : Pro Audio - How to make a voice/person unrecognizeable?

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Archived from groups: comp.sys.mac.apps,rec.audio.pro (More info?)

I need to play voice recordings so one can understand everything
including how it was said, but one should not be able to recognize the
voice (person).
What is the best way to do that - staring with an digital recording,
using Amadeus II on a Mac? or which filters etc would do that?

TIA

Marc

--
Marc Heusser
(remove the obvious: CHEERS and MERICAL...until end to reply via email)

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Archived from groups: comp.sys.mac.apps,rec.audio.pro (More info?)

In comp.sys.mac.apps and rec.audio.pro, On Wed, 26 Jan 2005 21:06:27
+0100, Marc Heusser
<marc.heusser@CHEERSheusser.comMERCIALSPAMMERS.invalid> wrote:

>I need to play voice recordings so one can understand everything
>including how it was said, but one should not be able to recognize the
>voice (person).

What I've always heard on TV sounds like going through a balanced
modulator/single sideband modulation to add and/or subtract a constant
to the frequencies, but if I were the one doing the talking, I'd worry
that this (or other processing) could be undone and my voice be made
recognizable.
Even one's speaking habits such as uh's, ah's and pauses will come
through, which may be unique and recognizable. The best way around
this is to do a transcript, record someone else reading it, then
process THAT voice (misleading listeners to think it's the original
voice). Be sure to reword any unusual or unique word combinations.

>What is the best way to do that - staring with an digital recording,
>using Amadeus II on a Mac? or which filters etc would do that?

A vocoder would flat-out remove the original pitch information
(hmm, so would Autotune), which may help. Another disguising technique
is low-cut EQ, then hard clipping, then high cut. Do you have a guitar
amp simulator?

>TIA
>
>Marc

-----
http://mindspring.com/~benbradley

Reply to Anonymous

Archived from groups: comp.sys.mac.apps,rec.audio.pro (More info?)

Marc Heusser <marc.heusser@CHEERSheusser.comMERCIALSPAMMERS.invalid>
wrote:

> I need to play voice recordings so one can understand everything
> including how it was said, but one should not be able to recognize the
> voice (person).

You want a vocoder. mda Vocoder is already on your machine, probably
(esp if you have Amadeus). Zerius provides more interesting
possibilities, though! Hum into your computer to provide a "carrier",
run the voice through it ("modulator" ), and it is very, very disguised.
m.

--
matt neuburg, phd = matt@tidbits.com, http://www.tidbits.com/matt/
AppleScript: The Definitive Guide
http://www.amazon.com/exec/obidos/ [...] ingsbymatt
Read TidBITS! It's free and smart. http://www.tidbits.com

Reply to Anonymous

Archived from groups: comp.sys.mac.apps,rec.audio.pro (More info?)

> I need to play voice recordings so one can understand everything
> including how it was said, but one should not be able to recognize
the
> voice (person).
> What is the best way to do that - staring with an digital recording,
> using Amadeus II on a Mac? or which filters etc would do that?

You can easily turn a woman voice into a man's voice and vice-versa,
which
would make it quite unrecognisable. Just use the "Change Pitch and
speed"
function to decrease (resp. increase) the pitch by about half an octave
(that's 3
tones). HTH

Martin

Reply to martin

Archived from groups: rec.audio.pro (More info?)

In article <marc.heusser-F65967.21062726012005@idnews.unizh.ch> marc.heusser@CHEERSheusser.comMERCIALSPAMMERS.invalid writes:

> I need to play voice recordings so one can understand everything
> including how it was said, but one should not be able to recognize the
> voice (person).
> What is the best way to do that - staring with an digital recording,
> using Amadeus II on a Mac? or which filters etc would do that?

You need a formant fiddler along with a pitch changer. Boss used to
make a fairly inexpensive one, probably still do. Hardware beats
software for this sort of thing.

--
I'm really Mike Rivers (mrivers@d-and-d.com)
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me here: double-m-eleven-double-zero at yahoo

Reply to Anonymous

Archived from groups: comp.sys.mac.apps,rec.audio.pro (More info?)

Want to really change a voice try Antares Kantos! Voices have never been
changed more drastically than by this piece of software.
Max Arwood

"Marc Heusser" <marc.heusser@CHEERSheusser.comMERCIALSPAMMERS.invalid> wrote
in message news:marc.heusser-F65967.21062726012005@idnews.unizh.ch...
> I need to play voice recordings so one can understand everything
> including how it was said, but one should not be able to recognize the
> voice (person).
> What is the best way to do that - staring with an digital recording,
> using Amadeus II on a Mac? or which filters etc would do that?
>
> TIA
>
> Marc
>
> --
> Marc Heusser
> (remove the obvious: CHEERS and MERICAL...until end to reply via email)

Reply to Anonymous

Archived from groups: rec.audio.pro (More info?)

Mike Rivers wrote:
> In article <marc.heusser-F65967.21062726012005@idnews.unizh.ch> marc.heusser@CHEERSheusser.comMERCIALSPAMMERS.invalid writes:
>
>
>>I need to play voice recordings so one can understand everything
>>including how it was said, but one should not be able to recognize the
>>voice (person).
>>What is the best way to do that - staring with an digital recording,
>>using Amadeus II on a Mac? or which filters etc would do that?
>
>
> You need a formant fiddler along with a pitch changer. Boss used to
> make a fairly inexpensive one, probably still do. Hardware beats
> software for this sort of thing.
>
> --
> I'm really Mike Rivers (mrivers@d-and-d.com)
> However, until the spam goes away or Hell freezes over,
> lots of IP addresses are blocked from this system. If
> you e-mail me and it bounces, use your secret decoder ring
> and reach me here: double-m-eleven-double-zero at yahoo

I have that little Orange Boss voice manipulator. It's
actually pretty cool. It would work well in this
application.

--
--
John Noll
Retromedia Sound Studios
Red Bank, NJ

jn145_deletethisfirst_@verizon.net
http://www.retromedia.net

Reply to Anonymous

Archived from groups: comp.sys.mac.apps,rec.audio.pro (More info?)

> I need to play voice recordings so one can understand everything
> including how it was said, but one should not be able to recognize the
> voice (person).

Remember to make the ransom call from a pay phone a safe distance from where
you're keeping the hostages.

Reply to Anonymous

Archived from groups: rec.audio.pro (More info?)

On Thu, 27 Jan 2005 22:04:55 -0500, Sugarite <nobody@home.com> wrote:
> I need to play voice recordings so one can understand everything
> including how it was said, but one should not be able to recognize the
> voice (person).
>

What's the budget of the person you're trying to fool?

If you're talking about the needs of a theatre production, you want a
"flavor" rather than true obfuscation. In the original "Little Shop of
Horrors" cast, "A Voice, Not Unlike God" played about six different
roles, including some drag. His voice was "disguised" but he wasn't
fooling anyone who really listened.

If you're doing a practical joke (or committing a crime) it has to
obfuscate within the fairly narrow bandwidth of a telecom channel
(4kHz).

Finally, if you're trying to fool the people who in the US are called
"Three-letter agencies" I suggest you find an easier line of work.

Reply to Anonymous

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