1 What gives each sound its own distinctive timbre?
the acoustical phenomenon of the overtone series
The timbre of a guitar is guitar timbre. I'm not sure you know what timbre is. It's the sound an instrument or voice has, so it can't be described, only heard. So, whichever guitar you have, the way it sounds is its timbre. On the same pitch your singing voice and your guitar, or your flute or whatever, sound different than each other, that difference is the timbre. Timbre cannot be described in numerical terms.
Humans do not need to move their ears to hear, but those muscles have nothing to do with hearing sound (there are muscles in the middle ear which do) BUT with the location of sound. The shape of the human ear is a type of phase-delay echo chamber; this phase delay gives us an up-down orientation to a sound. The phase difference of the sound from each ear gives us right-left orientation. This method is…
Tabla is a pair of Indian drums--one smaller and one larger. The smaller drum is played with the right hand and is made of wood, while the larger drum is played with left hand is made of brass. Each has a large black spot in the middle of its drum head. This spot is made of gum, soot and iron fillings; it is responsible for the drum's distinctive bell-like timbre