Change your voice over the phone in real time using a computer or digital processor.
This black box allows routing effects through your phone system
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This project converts an old desktop telephone into a versatile audio
mixing station that lets you route your telephone calls through an
effects processor in order to create a state of the art voice changer.
By using a real time computer voice filter or a professional quality
effect box, you can change your voice in ways that will make you sound
like a completely different person. You can make a man sound like a
woman, or a girl sound like a man, or a man sound like an elderly lady,
or any possible combination imaginable with results that will fool
anyone.
Unlike those "spy toy" voice changers that make you sound like a
funny cartoon, a real vocal effects unit or computer vocal filter will
alter a voice in a perfectly convincing manner, allowing fine control
over both the formant (gender) and the pitch of your voice. Sure, you
can have a lot of fun with evil and chipmunk voices as well, but if you
really want to mask your voice identity in a convincing manner then this
useful device will allow you to connect any microphone compatible audio
processing unit into your phone so you can alter your voice in real
time.
There are many extremely powerful audio processing programs available
for a computer that allow a person to alter his or her voice by talking
into a microphone. Many of them are inexpensive or even free. Music
stores also offer digital effect boxes that are designed for vocal
processing, and these have the same functionality as the computer
programs, but do their processing in a dedicated DSP (digital signal
processor). I will be using both the computer software voice changer as
well as the "effect box" version of the vocal processor to show how each
one can be connected to the phone system using this project.