Extracting the angle of release from guitar tones: preliminary results

Bertrand Scherrer (1) , Philippe Depalle (2)

1 Schulich School of Music [Montréal]
2 IRCAM - Institut de Recherche et Coordination Acoustique/Musique

On the classical guitar, a performer can impart very distinct qualities upon the sound s/he produces by the way s/he plucks the strings. There is, for example, a clearly audible difference between notes plucked using a rest stroke (a.k.a. "buté") and a free stroke (a.k.a. "tiré"). The difference between these strokes has been shown to stem from a difference in the angle at which the string is released at the end of the finger-string interaction. A sound analysis tool, based on a digital waveguide model that exploits the asymmetry of the guitar body's admittance, has been created to provide an estimate of this angle of release. Some first results on synthetic and real guitar tones are presented. This work is an extension of a previous study in which the plucking position was extracted from an audio recording.

Mots clés: classical guitar; instrumental gestures; digital waveguides

Domaines: Acoustique [physics.class-ph]

Bertrand Scherrer, Philippe Depalle. Extracting the angle of release from guitar tones: preliminary results. Acoustics 2012, Apr 2012, Nantes, France. ⟨hal-00810592⟩