Voice changer

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.^{[1][2][3][4][5]}

More sophisticated voice changers have different levels of various distortion effects variable by faders.^[6][7]

Nowadays, software implementations are very common. There is a plethora of techniques that modify the voice by using different algorithms.^[8][9] 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.^[10]

"Voice cloning" software can mimic the sound of a specific person's voice based on recordings of that voice.^[11]

• 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 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.
  • For The Incredible Hulk, his voice is lowered in the pitch and sounds raw, becoming a inhuman. In the films The Incredible Hulk, The Avengers and Avengers: Age of Ultron, When Hulk Roaring and Growling, the voice combining with those voices actors who are uncredited and the animals sounds effects. In Thor: Ragnarok, Hulk's voice was blended by human speech and altered timbre and produced the “auto-tune” artifacts when used aggressively.
• 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.
• 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.