It's physiological rather than philosophical. Auditory stimuli are sensed through your ear and tactile through the somatosensory system (in humans). There's some crossover in the frequencies both can detect.

There's also some potential crossover in how these may be perceived. For example, experiments which show you may in fact be able to 'hear' through your fingers; https://www.nature.com/articles/s41598-022-06855-8.