The phrase "a layer of sound" is correct and usable in written English.
It can be used to describe a specific quality or characteristic of sound, often in contexts related to music, acoustics, or sound design.
Example: "The song had a rich texture, with a layer of sound that enveloped the listener in a warm embrace."
Alternatives: "a veil of sound" or "a blanket of sound".
It was a layer of sound over the sounds of the wind, the animals, the trees.
Contributing further to the music potpourri was a layer of sound effects – police sirens and so on – that underpinned proceedings.
On their album S o)un(d beams, Salyu's voice is used much like any other instrumental part, forming a layer of sound and rhythm that blends the industrial and organic in an act of musical alchemy.
Floors are easier to insulate than walls or ceilings because you can lay down a layer of sound-insulating fiberboard directly on the floor surface without nails or screws.
Heard through the scrim of the string writing, the rap lyric was only fleetingly comprehensible, and the turntable scratches became a layer of electronic sound, little different from what other composers might have produced on a computer.
During this time, they developed a new layer of sound that triggers the animation and that is only perceivable by the software.
This is a fault that can probably be remedied by inserting between the inner and outer walls a layer of the seaweed sound-deadening material that is used in the construction of gramophone recording studios.
In a thrilling climactic chapter, he conjures forth the avalanche and its aftermath, when railroad cars filled with victims lay buried under a thick layer of sound-deadening snow.
Mr. Lindberg, a Finn and the composer in residence at the Philharmonic, said his idea was to inject a layer of mostly dry, metallic sounds into the battery of standard percussion instruments, which have a greater resonance.
Where the band painfully craft and debate every layer of sound that goes into a song, here Garvey just went for it.
There's a layer of beautiful vocals and swelling sound, and above that, a thin dull roar of the dying.
