One of the ignored <i>Voice</i> contestants ... Chita Henneberry.

One of the ignored Voice contestants ... Chita Henneberry.

The Voice's executive producer Adrian Swift says there was nothing sinister about omitting two sudden-death battle rounds from reality TV show.

Only glimpses of the sing-off between will.i.am coached pair Chita Henneberry and Emily Rex and Joel Madden's disciples Elise Baker and Laura-Leigh Smith made it to air.

Henneberry and Smith were acknowledged as having gone through, but only during a highlights package of each coach's winning artists.

One of Joel's disciples Laura-Leigh Smith.

One of Joel's disciples Laura-Leigh Smith.

Swift said it was common practice around the world for battle rounds to be heavily edited and it had occurred during previous seasons of the Nine Network series.

"It happens in every other territory around the world under this (battle round) format," Swift said. "It's incredibly tough and it took us hours to decide what to do."

Even though the show's 28 battle rounds take some 56 minutes of viewing time, the two battles were omitted over the four nights, or some six hours of screening time.

Will.i.am's Emily Rex also missed out.

Will.i.am's Emily Rex also missed out.

Swift said they wanted to tell stories behind the artists, their celebrations and commiserations and the verbal exchanges between coaches.

"We don't think it's trivial (the banter between the coaches)," Swift said. "The focus of the night is the singers and we are very aware of that but we want to tell the stories the best way we could.

"Those (the two omitted) battles were good ... but editorially in the end we decided to do what we did, so we didn't cripple some other stories or half do them."

It's the second time in a week the producers have blamed time constraints for selective editing during the battle rounds.

Last Monday, Kylie Minogue's attempt to save Gold Coast singer Jayde Grey from elimination was edited out.

Minogue was a fraction late pressing the buzzer, within the five second limit, to save Grey who tweeted her disappointment about the segment not airing.

Grey said that Minogue was profusely apologetic for being slow on the buzzer.

"It was a really crazy experience and I don't particularly like the fact that what happened wasn't shown to the public," Grey said recently. "I don't care that I missed out but I think it was something that should have been shown."

The "failed save" segment would have lasted about 10 seconds but never made it to air because "we simply don't have the time", a Nine spokeswoman said.

AAP