"depth of voice" is correct and usable in written English
You can use it when talking about someone's voice to describe its range and quality. For example, "She has a strong, deep depth of voice when she speaks."
We'll drift through the same residence, me slightly curved by the weight of another fifteen years and he or she amazing me daily with sudden height and depth of voice, and stubbornness.
In fact, depth of voice is the important aspect to imparting a sense of friendliness and trustworthiness, so concentrate on developing a firm depth in your voice to overcome too much softness.
Mirza's strategy, and much of his effort, is on seeking to improve the balance of our editorial content, and extending the breadth and depth of voices we use, whilst also ensuring we practice what we preach by mirroring good practices internally.
The depth of his voice makes Tom Waits sound like Eddie Kendricks.
But I was happier in the depth of my voice than in its height".
But Columbia A & R man Mitch Miller then directed Clooney toward more romantic songs, concentrating on the warmth and depth of her voice.
And at Tuesday's opening-night performance of his new show, titled "An Evening With Paulo Szot" like the previous two, the breadth and depth of a voice that is almost too commanding for the tiny club produced gasps of admiration.
She has been musically hamstrung by the common assumption that her talent begins and ends with the Auto-Tune switch; Cheek to Cheek reveals the considerable warmth and depth of her voice.
Mr. Rucker only deployed the full depth of his voice a few times, but all its vividness was intact on the melancholy "Don't Think I Don't Think About It," and on "I Got Nothin'," the closest he comes to a soul song.
Beyond the depth of his voice, there's its range -- it can float into a higher register for a phrase, jump from singing to speaking, shift from smooth to staccato or lock into a descending growl so deep that all one can think of is a bottomless well.
The depth of his voice grows my love.
