Wolf tone is a dissonance—a tremble within a pattern. Imagine the tiny drums between heartbeats as flutters of air between wingbeats. The tone is a background vibration howling through a song, not so much echo as result. A wolf tone is necessary if we ever hope to hear the planet’s whirling; if we ever hope to hear it.
Miller, JM, "Wolf Tone" (2016). SIAS Faculty Publications. 687.