TV
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Fans reacted angrily to the use of vocal effects during auditions and accused show bosses of "deceiving" viewers.
According to the Daily Record, Cowell returned from holiday and ordered an immediate ban on the use of Auto-tune on the show.
"As soon as he landed, he was very busy taking lots of calls from production and ITV bosses," a source told the paper. "He said 'the s**t has hit the fan', and was shocked about the fans' reaction and wanted to do something straight away."
They added: "The integrity of the show is very important to him and so he told production that Auto-tune cannot be used again."
A former member of the programme's production team claimed that Auto-tune was also used on contestants in the live finals.
> Susan Boyle 'Auto-Tuned on BGT'
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