Voice changer

The term voice changer (also known as voice enhancer) refers to a device which can change the tone or pitch of or add distortion to the user's voice, or a combination and vary greatly in price and sophistication. A kazoo/didgeridoo can be used as a makeshift voice changer, though it can be difficult to understand what the person is trying to say.

Hardware implementations

The earliest voice changers were electronic devices usually used over the telephone for the purpose of disguise. There are low-priced, small lithium battery-powered voice changers that are used between a phone's mouthpiece and the user's mouth. More sophisticated voice changers have different levels of various distortion effects variable by faders.

Software implementations

Nowadays, software implementations are very common. There is a plethora of techniques that modify the voice by using different algorithms.[1][2] Most algorithms modify the voice by changing the amplitude, pitch and tone of the voice. The pitch plays an important role from changing a male voice into female voice, and vice versa. The results of voice changing through software are quite impressive and satisfactory.[3]

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Appearances in media
  • Voice changers can be seen in various movies, including Scream, Saw, Super Troopers, Steel and a Talkboy voice changer was used in Home Alone 2: Lost in New York.
  • Current affairs television shows and documentaries will sometimes employ the use of voice changers to disguise the voice of someone who wants to remain anonymous.
  • In the anime/manga series, Death Note, the mysterious detective, named "L", uses voice distortion when talking through his computer, to his boss, Giovanni, used a voice changer until the end of the original series. It distorted his voice, making him sound like a robot.
  • Conan Edogawa, the main protagonist of the anime/manga series Detective Conan uses a bowtie-shaped voice changer. By turning a dial on its back, he is able to imitate all kinds of voices that he hears.
  • In the tutorial mission of the video game, Saints Row: The Third, Johnny Gat, Shaundi, Nyte Blade, and The Protagonist all use voice changers during a bank robbery.
  • Jason Hudson uses one in Call Of Duty: Black Ops when interrogating Alex Mason.
  • Clara Lille uses a voice distorter when talking with Aiden Pearce on her phone in the video game Watch Dogs until they meet face-to-face.
  • Some superheroes use voice changers, either to disguise themselves or intimidate their opponents:
  • In the animated TV series Star Wars Rebels, the Rebel Alliance's Fulcrum agents use voice changers to disguise their identities.
  • A Coca-Cola commercial starring Mindy Kaling also features a person who has a disguised voice and appearance to remain anonymous.
  • In Grand Theft Auto: San Andreas, Mike Toreno uses voice changers when calling CJ.

References
  1. Abe, M.; Nakamura, S.; Shikano, K.; Kuwabara, H. (April 1988). "Voice conversion through vector quantization". ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing: 655–658 vol.1. doi:10.1109/ICASSP.1988.196671.
  2. Hui Ye; Young, S. (May 2004). "High quality voice morphing". 2004 IEEE International Conference on Acoustics, Speech, and Signal Processing. 1: I–9. doi:10.1109/ICASSP.2004.1325909. ISBN 0-7803-8484-9.
  3. Ahmed, I.; Sadiq, A.; Atif, M.; Naseer, M.; Adnan, M. (February 2018). "Voice morphing: An illusion or reality". 2018 International Conference on Advancements in Computational Sciences (ICACS): 1–6. doi:10.1109/ICACS.2018.8333282. ISBN 978-1-5386-2172-1.


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