The phrase "at a volume that" is correct and usable in written English.
It can be used when describing the level of sound or loudness in a specific context.
Example: "She spoke at a volume that was barely audible over the noise of the crowd."
Alternatives: "at a level that" or "with a loudness that".
Speak clearly and at a volume that matches the interviewer.
The music is played at a volume that makes conversation difficult.
Thousands of them were standing nearby in the crisp darkness, waving signs, whistling and chanting in Spanish and English at a volume that could be heard blocks away.
Was it your friend's fault for talking about their sexual history in a tone and at a volume that was undeniably, with hindsight, distasteful?
It's a good soundtrack, played at a volume that does not discourage discussion of whether Iman Shumpert will energize the Knicks when he returns.
During the week, the Spencer Brown Quartet expertly plays some very modern improv jazz, though at a volume that is a bit too amplified for the small space.
Gillian Riley's The Oxford Companion to Italian Food (OUP £19.99) is encyclopaedic yet still liftable at 638 pages, a volume that sets a terrifically high benchmark for the Oxford Companion volumes to follow.
"Head hair gives humans an opportunity to demonstrate that they have free will," Neufeld declares, at the outset of a volume that is filled with the kinds of detail that lodge in a reader's mind, awaiting retrieval at cocktail parties.
Optimization of the EC-EPR parameters enabled KTZ radical detection at a concentration and with a volume that were one order of magnitude lower than the corresponding concentrations and volumes tested using chemical oxidation analysis techniques.
Mix one part hexane with three parts ethanol until you get a volume that is at least five times as great as the volume of gel currently being processed.
Sometimes clashes arise with headphone-wearing runners who are blasting tunes at such a volume that they can't hear the megaphoned voices of announcers or the directions offered by volunteers.
