"imperious voice" is a valid phrase and can be used in written English.
Generally, it refers to a voice that is domineering or has authority, such as a leader or manager. For example: "The professor spoke in an imperious voice, expecting that everyone would immediately comply with his instructions."
I'm Catholic" — could have been milked for derisive laughs, especially given the blaring trombone of Ms. Turner's imperious voice.
The sessions were tape-recorded, and on the tapes you can hear Travers's booming, imperious voice in terrifying counterpoint to the Sherman brothers' chipper young voices.
The character's face is never seen; he is just an imperious voice that spouts on regardless of whether anyone is listening.
There is another pause, followed by the sounds of a small commotion offstage, followed by a strong, imperious voice that seems familiar even if you can't place it.
They rely on low-budget gloom and Rathbone's imperious voice, as cutting as the swords he handled in so many costume adventures.
It helps that he has the kind of imperious voice that could lend biblical gravitas to a Harvester menu, but it's what he does with it that counts.
"We are reawakening the soul of the Russian people," intones the film's imperious bishop, voice shaking with righteous anger as he reels off a list of enemies who would undermine Russia.
When Ms. Buckley softens her imperious belting, her voice cracks open to reveal an empathetic vulnerability.
Hers was a confidently imperious Salome, whose voice dripped with contempt for everyone around her, not least her stepfather, Herod.
Anna Mouglalis's Chanel, with her imperious carriage, deep voice and a hard gaze that could bore a hole into you, suggests a mannish Ava Gardner on the rampage.
The former BBC economics editor simply raised an eyebrow and said, in the slightly imperious and nasally voice that helped make him one of the BBC's best-known TV reporters, "I work here".
