Whether a sound is figure or ground has partly to do with acculturation (trained habits), partly with the individual’s state of mind (mood, interest) and partly with the individual’s relation to the field (native, outsider). It has nothing to do with the physical dimensions of the sound, for I have shown how even very loud sounds, such as those of the Industrial Revolution, remained quite inconspicuous until their social importance began to be questioned.

Schafer, Murray R, The Soundscape- Our Sonic E…, loc. 503