X Factor announces auto-tune ban
X Factor bosses have bowed to pressure from viewers and pledged not to use "auto-tune" in future.
The controversial technique will not be used on contestants in either the audition shows or at the live competition stage.
A spokeswoman for the ITV show said: "There will be no auto-tune in the audition shows or for competitive performances on live shows."
She added: "This week's show is currently still in edit which is normal practice. Therefore this week's show has not had to be re-edited."
The sound filter is often used by record producers to mask bum notes in recording studios, but came under the spotlight when viewers complained about its use on the ITV1 show.
Many viewers voiced concerns after watching the performance by teenager Gamu Nhengu when the latest series began on Saturday.
Her version of the Katrina And The Waves hit Walking On Sunshine prompted a flurry of online claims that producers had auto-tuned her voice.
The 18-year-old from Clackmannanshire, Scotland, was unanimously ushered through to the next round with Simon Cowell telling her she was "really talented".
Earlier this week programme chiefs said sound filters were not used to give a competitive advantage, but remove additional noises.
The latest move does not necessarily mean auto-tuning will be banished completely from the show. Guest performers may continue to use it.