12 September 2014 Chords and harmonies in mixed optical and acoustical stimuli
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Abstract
The paper is a follow up of the work presented in last year’s Optics and Music session on the perception of coherence between low frequency power modulated light and periodical acoustic stimuli. The composition of chords and harmonies from power modulated light sources and their effect as stand-alone stimulus and in conjunction with the equivalent acoustic signal is discussed. Of special interest here is the modulation near perceptible flicker frequency. The substitution of acoustical chord components by their optical counterpart and vice versa is investigated. Further, concepts of a training application for trombone players and other instrumentalists are presented: since the mean slide of the trombone does not have fixed positions, the note must be found and two players might influence each other. The possibility of helping them to synchronize by optical stimuli derived from their playing is investigated. Beside possible applications in emotional reinforcing multimedia oriented entertainment and training support for musicians, again implications for occupational medicine are discussed.
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Cornelius Hahlweg, Florian Dannenberg, Joachim Dörfler, Bernhard Weber, Cornelia Weyer, Harald Gercke-Hahn, Steffen Freimuth, Sören Heucke, Holger Ludwig Gutzmann, "Chords and harmonies in mixed optical and acoustical stimuli", Proc. SPIE 9193, Novel Optical Systems Design and Optimization XVII, 91930P (12 September 2014); doi: 10.1117/12.2062325; https://doi.org/10.1117/12.2062325
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