Engineering:Voice changer

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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.[citation needed]

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]

"Voice cloning" software can mimic the sound of a specific person's voice based on recordings of that voice.[4]

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. It distorts 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, Johnny Gat, Shaundi, Nyte Blade, and The Protagonist all use voice changers during a bank robbery.
  • Jason Hudson uses one in Call of Duty 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 live-action TV series Arrow, Oliver Queen, when communicating under disguise as "the Arrow", uses a voice changer.
    • In the film Batman v Superman: Dawn of Justice, Bruce Wayne uses it to disguise his voice and to inflict fear into criminals.
    • In the film Spider-Man: Homecoming, a voice changer is activated when Spider-Man turns on his Tech Suit's interrogation mode, making him speak in a deep, frightening voice to a potential suspect.
  • 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, Mike Toreno uses voice changers when calling CJ.
  • In the Spanish heist TV series Money Heist the leader of the robbers, the Professor, frequently uses a voice changer to talk to the police.
  • In the Rugrats episode "Angelica Orders Out", Angelica uses Stu's voice changer, which makes her sound like her mother, to call a deli to order dessert and to call all of the kids' parents to go to her fake surprise party.

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. pp. 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. pp. 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). pp. 1–6. doi:10.1109/ICACS.2018.8333282. ISBN 978-1-5386-2172-1. 
  4. ↑ Brayne, Sarah (2018). "Visual Data and the Law". Law & Social Inquiry 43 (4): 1149–1163. doi:10.1111/lsi.12373. 



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