Inharmonic tone complexes can yield multiple or virtual perceived pitches

Evidence

Pitch perception becomes an even more complex phenomenon if the sound consists of partials that are not necessarily whole number multiples of a common fundamental frequency. For example, church bells and other vibrating bars and plates generate tone complexes with partials in more or less inharmonic succession. There may be one or more pitches perceived from the bell sound, and the pitches may correspond to some high-level partials in the spectrum, or they may be virtual pitches generated by some partials. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1118

Categorization

Category: Factual Claims

  • SEED: Possible angle: how bell and metallophone tuning relies on exploiting these virtual-pitch illusions, relevant to instrument design and digital synthesis of bell sounds.
  • SHARE: A church bell / gamelan friend would enjoy this detail about inharmonic partials producing virtual pitches.