"earnest voice" is a correct and usable phrase in written English.
It can be used to describe someone's tone or manner of speaking, indicating that they are showing sincere and serious intent. It can be used in a variety of contexts, such as a conversation, a description of someone in a story, or in a speech. Example: "She spoke with an earnest voice as she urged the crowd to take action and make a difference in their community."
This time, a loud and earnest voice interrupted.
Harrison, with his deep, unwaveringly earnest voice and unflinching eye contact, made the roadblocks a positive.
The earnest voice of his Tumblr blog, Aaronverse, caught the attention of Tumblr's 27-year-old chief executive, David Karp.
"To make all sorts of stuff out of this material," said Mr. Gordon-Levitt in a low, earnest voice.
This is the Chris Rock who delivers passionate diatribes in a soft, earnest voice.
Her husky, earnest voice is put to appealingly honest and unguarded tales where lust and strife intertwine.
The film's earnest voice-over is by Alistair Cooke - Saturday at 11 p.m. on Channel 13.
That loss hangs heavily over "Missing You," a slow jam with Rachelle Ferrell on lead vocal, which begins with an uncomfortably earnest voice-over by Mr. Duke.
He tries to translate Ms. Egan's prose by means of a battery of cinematic shortcuts -- soft-focus montage, earnest voice-over narration and so many flashbacks you may wonder if your popcorn was laced with some hallucinogen.
"Local Color," George Gallo's heartfelt semi-autobiographical film about an aspiring painter and his curmudgeonly mentor, is so well acted that you almost forgive its formulaic structure, treacly score and earnest voice-over narration.
For all its epic pretensions (as if epic were a matter of running time, tumescent music and earnest voice-over pronouncements), the movie works best as a bang-and-boom action picture, a loud symphony of bombardment and explosion juiced up with frantic editing and shiny computer-generated imagery.
