Japan court rules human voice is protected in TikTok AI case
Anime voice actor Kenjiro Tsuda took TikTok to court over videos he says feature an AI clone of his “deep” and “lustrous” voice.
A smartphone displaying the logo of Chinese social media platform TikTok on Apr 19, 2024. (File photo: AFP/Antonin Utz)
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TOKYO: A Tokyo court ruled on Wednesday (Sep 30) that the human voice is legally protected in Japan after a high-profile anime voice actor took TikTok to court over videos he says feature an artificial intelligence clone of his “lustrous” baritone.
The decision marks a partial victory for Kenjiro Tsuda, known for his starring roles in mega-franchises including “Jujutsu Kaisen” and “Yu-Gi-Oh!”, although the court dismissed his request for removal of the videos.
“The unauthorised use of a performer’s voice … can be considered an infringement on publicity rights,” said presiding judge Aya Takahashi.
AI imitation is a growing concern among performers worldwide, and the threat has roiled Japan’s storied animation industry, whose voice actors are sometimes worshipped as much as their characters by fans.
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The lawsuit is believed to be the country’s first seeking to defend an individual’s vocal identity against AI-generated copies.
It centred around a slew of TikTok videos narrated by a distinctively “deep” and “lustrous” voice that Tsuda, 55, said can only be his.
The platform, however, argued it is a “generic male voice” whose perceived similarity to Tsuda’s is subjective at best, according to court records accessed by AFP.
Wednesday’s verdict is seen as Japan’s first declaring that the human voice is protected under publicity rights if “the purpose of using that voice is exclusively to take advantage of its commercial appeal”, judge Takahashi said, describing a voice “as symbolic of one’s personality as portraits are”.
Publicity rights refer to the ability to control and profit from the use of aspects of one’s identity.
“BOTH SIDES LOOK VICTORIOUS”
Takahashi, however, said TikTok was “no longer obliged to delete” the videos in question because the anonymous user behind them had taken them down several months after the lawsuit began.
Tsuda’s lawyer Takashi Hirano told reporters that the ruling “ended up making both sides look victorious”.
The anonymous account, whose picture resembled a “Jujutsu Kaisen” character dubbed by Tsuda, combined images and seemingly AI-generated speech about urban legends, occult phenomena and conspiracy theories.
It at one point boasted more than 200,000 subscribers and would have brought in upwards of 500,000 yen (US$3,200) in monthly revenue, the legal complaint argued.
Tsuda’s legal team argued the account only gained traction because “its dubious, sordid content was narrated by the attractive voice of a popular actor”.
Interest in the ruling has been high among voice actors in Japan, who worry AI mimicry of the tool of their trade will go a long way towards the decline of the storied industry.
An actor’s voice “is the result of years of rigorous training and apprenticeship” to hone talent, Yuko Sasaki, executive director of the Japan Actors Union, told AFP ahead of the ruling.
“It’s something we spend lots of time and money perfecting,” said Sasaki, a fellow voice actor, adding that “we support Tsuda wholeheartedly”.
Parallel to the lawsuit, Sasaki and other Japanese voice actors have launched a campaign, called “No More”, against using generative AI to mimic performers without permission.
“Our industry can be crushed” if a court win for TikTok triggers “unbridled” AI voice cloning on social media, actor Bin Shimada told AFP earlier.
That could cause younger actors to “lose hope”, said Shimada, who is part of the campaign group.
Source: AFP/dy
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