sonorousness

The improvisational emphases and tonality mark the unmistakable voice of Scotland's most important living novelist – trilling with hilarity one moment, plummeting into mock sonorousness the next.

From The Guardian ● Nov. 18, 2012

For this reason, when the floor was especially hard or thick and lacking in sonorousness, she sometimes failed in the expected effect.

From The Death-Blow to Spiritualism Being the True Story of the Fox Sisters by Reuben Briggs Davenport

There is also a deliberation in the delivery—a sonorousness in the phraseology—that has something of a bygone day.

From Sketches in the House (1893) by T. P. O'Conner

The collecteurs, as well as the smaller sewers of the streets and houses, are constructed of masonry laid in mortar, and they are lined with cement which insures their cleanliness and their sonorousness.

From Paris From the Earliest Period to the Present Day; Volume 2 by William Walton

And when there is nothing to bark at, either he must growl and gnaw his reserved bones, or bark at the moon to keep up the sonorousness of his voice.

From Orthodoxy: Its Truths And Errors by James Freeman Clarke