I think it would be a better investigation if you observed terminology _in use_, ie extracting terms from a dialogue. but here goes: a sample: bright, grainy, noisy, clicky, evolving, harsh, smooth, clean a mix: muddy, sparse, terms relating to space, volume, depth, "closeness" of sounds, tight, heavy, crisp, blurry, light and shade, brash, contrasty (yeah contrasty's a word...) that sort of thing? -poil-