The colour or quality of a sound. It is used as a term to describe all of the properties of sounds that cannot be described using other terms (such as pitch, duration, etc.)
Timbre is a result of the combination of all of the sound’s properties and therefore cannot be broken down or simplified in its explanation.
However, the timbre of sounds may be described as being more NoiseA term that describes sounds that have a diffuse spread of spectral energy. It is often contrasted with pitched sounds.Noise or PitchThe relative height of a sound, ranging from low to high.Pitch.
Explore timbre in “The Sounds of Sound Based Music” – Timbre / Sound Quality.