Meta has created a new system that it says can generate convincing speech in a variety of styles – but will not release it for fear of the risks. The new tool is called “Voicebox” and can be set to create outputs in different styles, new voices from scratch as well as with a sample. It makes speech across six languages, as well as a variety of other tools such as noise removal. It says that it is a major development on previous speech systems that required specific training for each task. Instead, Voicebox can just be given raw audio and a transcription, and then be used to modify an audio sample. It is far more effective than its competitors, Meta claimed in its announcement. It can generate words with a 5.9 per cent error rate compared to 1.9 per cent from competitor Vall-E, for instance, and do so as much as 20 times more quickly. Meta said that it had been built on the foundation of a new model it called “Flow Matching”. That allows the system to learn from speech that has not been carefully labelled, so that it can be trained on more and more diverse data. Voicebox was trained on 50,000 hours of speech and transcripts that came from public domain audiobooks in English, French, Spanish, German, Polish, and Portuguese, Meta said. Now that it has been trained, it can be given an audio recording and fill in the speech from the context, Meta said. That could be used to create a realistic sounding voice from just two seconds of speech, for instance, potentially being used to bring voices to people who cannot speak or to add people’s voices into games. It could also be used to translate a passage of speech from one lanagueg to another in a way that keeps the style, Meta said, allowing people to talk to each other authentically even if they don’t speak the same language. It could also be useful in more technical scenarios, such as audio editing, where it can be used to replace words that were not properly recorded, for instance. But Meta said that the risks were such that it would not be releasing the model. It did not point to specific harms, but said that “as with other powerful new AI innovations, we recognize that this technology brings the potential for misuse and unintended harm”. Numerous reports have warned that such systems could be used to copy people’s voices without their consent and in ways that could be harmful, such as creating fake videos of news events or using people’s voices to pose as them during scam calls, for instance. “There are many exciting use cases for generative speech models, but because of the potential risks of misuse, we are not making the Voicebox model or code publicly available at this time,” Meta said in a statement. “While we believe it is important to be open with the AI community and to share our research to advance the state of the art in AI, it’s also necessary to strike the right balance between openness with responsibility.” It also pointed to a separate paper, published on its website, in which it detailed how it had built a “highly effective” system that can distinguish between authentic speech and audio that had been generated with Voicebox. Read More Mark Zuckerberg reveals what he thinks about Apple’s headset – and it’s not good Meta scrambles to fix Instagram algorithm connecting ‘vast paedophile network’ Reddit user’s protests against the site’s rules have taken an even more bizarre turn

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Several hundred fighters of the Wagner mercenary group have returned to Ukraine to fight in Russia’s continuing invasion but have not made a significant impact on the battlefield, military officials in Kyiv said. "We have recorded the presence of a maximum of several hundred fighters of the former Wagner PMC (private military company)," spokesperson for the eastern military command Serhiy Cherevatyi said. These Wagner fighters were scattered in different places, were not part of a single unit, and had had no significant impact, he said. "They do not constitute any integral, systematic, organised force," the spokesperson said. "As they say – game over. These are pathetic remnants, nothing good awaits them here." The Independent has not verified the reports on Wagner’s return on the battlefield. If confirmed, this will mark the first ever comeback of Wagner in Ukraine after the death of its supreme leader Yevgeny Prigozhin in August. Russia’s Investigative Committee says it has confirmed Wagner chief Yevgeny Prigozhin was killed in a plane crash. On 23 August, Prigozhin’s private jet came down north-west of Moscow, killing all those on board. Video footage showed debris falling from the sky above Kuzhenkino in Russia, with pictures emerging of the wreckage. His right-hand man Dmitry Utkin was also on board the Embraer Legacy 600 jet, as well as five other passengers and three crew members. Russian military bloggers have reported that some Wagner fighters have been returning to Ukraine. The officials in Kyiv condemned the group on Wednesday once again and denied its existence. Ukrainian presidential adviser Mykhailo Podolyak said the group – comprising majorly of prison convicts – no longer existed. "Today, there are only former militants of the terrorist group who have scattered in all directions," he wrote on X, formerly known as Twitter. He said some had gone to Africa, some were dispersed through Russia, and some had contracts with the Russian Defence Ministry and were fighting in the Bakhmut sector. Reports of their return were intended to drown out news of Ukraine‘s recapture of two villages near Bakhmut, the official said. The mercenaries, responsible for carrying out Russia’s dirty work in Africa, also played a crucial role in Russia’s continuing invasion of Ukraine and handed Vladimir Putin one of Moscow’s biggest territorial feats by capturing the eastern city of Bakhmut in May. It came after one of the longest and fiercest battles of Moscow’s 19-month war in Ukraine. But after complaints of ammunition starvation, Wagner chief Prigozhin announced he and his fighters will leave Bakhmut after the battle. Some of them went to Belarus under a deal that ended a brief mutiny by Wagner in June, during which it took control of a Russian military headquarters and marched on Moscow. After Prigozhin’s death, the Kremlin has sought to bring the group under tighter state control. Read More Ukraine repels Russian attacks as Putin’s forces try to recapture territory lost in counteroffensive Ukraine-Russia war – live: Fresh offensive by Putin’s troops ‘unlikely’ as frontline ‘over-stretched’ A month after Prigozhin’s suspicious death, the Kremlin is silent on his plane crash and legacy Inside Ukrainian brigade’s battle ‘through hell’ to reclaim village from Putin’s troops on way to Bakhmut UK officially bans Russia’s Wagner paramilitary group as terrorist organisation

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The FBI has stepped up its search for members of a multimillion-dollar cybercrime group more than two years after the bureau and its European allies announced they had taken down the group's computer systems, according to newly unsealed court documents reviewed by CNN.

Residents of a Russian city at the heart of a brief rebellion against army top brass expressed relief on Sunday but also voiced some sympathy for the mutiny...