Filtering and resonance are more naturally understood in the frequency domain.

Evidence

These techniques are useful because sometimes it’s easier to think about some processes in one domain rather than the other. For example, it’s much easier to think about filtering, resonance, and modes of vibration in the frequency domain rather than the time domain. Furthermore, the fact that the basis functions are sine waves, which have a direct physical analog, is useful when dealing with the real world. — David Howard, Jamie Angus, coustics and Psychoacoustics, 441

Categorization

• XREF: This domain-switching-for-clarity advice mirrors Schafer’s soundscape work in The Soundscape, where signals, keynotes, and soundmarks are likewise read in frequency terms. Also echoes the reader’s own Noise/Silence notes about silence as a positive presence.