Įmotional contextualizers are representations of the emotional content of a sentence deduced via transfer learned emoji embeddings using DeepMoji, a deep neural network sentiment analysis algorithm developed by the MIT Media Lab in 2017. The application also supports manually altering the emotion of a generated line using emotional contextualizers (a term coined by this project), a sentence or phrase that conveys the emotion of the take that serves as a guide for the model during inference. The deep learning model used by the application is nondeterministic: each time that speech is generated from the same string of text, the intonation of the speech will be slightly different. Announcer (formerly), Carl Brutananadilewski from Aqua Teen Hunger Force, Steven Universe from Steven Universe, Dan from Dan Vs., and Sans from Undertale. Īvailable characters include GLaDOS and Wheatley from Portal, characters from Team Fortress 2, Twilight Sparkle and a number of main, secondary, and supporting characters from My Little Pony: Friendship Is Magic, SpongeBob from SpongeBob SquarePants, Daria Morgendorffer and Jane Lane from Daria, the Tenth Doctor from Doctor Who, HAL 9000 from 2001: A Space Odyssey, the Narrator from The Stanley Parable, the Wii U/3DS/ Switch Super Smash Bros. HAL 9000, known for his sinister robotic voice, is one of the available characters on 15.ai. On September 8, 2022, 15.ai was temporarily taken down in preparation for an upcoming update, a year after its last stable release (v24.2.1). In January 2022, it was discovered that Voiceverse NFT, a company that voice actor Troy Baker announced his partnership with, had plagiarized 15.ai's work as part of their platform. Several commercial alternatives have spawned with the rising popularity of 15.ai, leading to cases of misattribution and theft. Furthermore, 15.ai has inspired the use of 4chan's Pony Preservation Project in other generative artificial intelligence projects. Ĭredited as the impetus behind the popularization of AI voice cloning (also known as audio deepfakes) in content creation and as the first publicly available AI vocal synthesis project to involve the use of existing popular fictional characters, 15.ai has had a significant impact on multiple Internet fandoms, most notably the My Little Pony: Friendship Is Magic, Team Fortress 2, and SpongeBob SquarePants fandoms. Its gratis and non-commercial nature (with the only stipulation being that the project be properly credited when used), ease of use, no user account registration requirement, and substantial improvements to current text-to-speech implementations have been lauded by users however, some critics and voice actors have questioned the legality and ethicality of leaving such technology publicly available and readily accessible. Launched in early 2020, 15.ai began as a proof of concept of the democratization of voice acting and dubbing using technology. Developed by an anonymous MIT researcher under the eponymous pseudonym 15, the project uses a combination of audio synthesis algorithms, speech synthesis deep neural networks, and sentiment analysis models to generate and serve emotive character voices faster than real-time, particularly those with a very small amount of trainable data. 15.ai is a non-commercial freeware artificial intelligence web application that generates natural emotive high-fidelity text-to-speech voices from an assortment of fictional characters from a variety of media sources.
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