I have a question relating the "timbre" of a sound, namely what is exactly and exhaustively defined by this word? Most definitions that I come across seem somewhat loose as "the color of the sound". So what I want to know is:
Is timbre physical or perceptual in nature? (Does a tree falling in the woods make a sound that has timbre?)
Is timbre a collection of ways in which we can excite the natural frequencies of an object? (For example: plucking, bowing, hammering, kicking and whichever other way we can make a different violin sound)
Does an object have a single timbre or multiple timbres?
Does an randomly evolving noise have timbre? (Is timbre applicable where there is no consistency and recognizability?)