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Spectral features influencing perception of pipe organ sounds

: Stepánek, J.; Syrovy, V.; Otcenásek, Z.; Täsch, C.; Angster, J.

Augusztinovicz, F. ; Scientific Society for Optics, Acoustics, Motion Picture and Theater Technology -OPAKFI-:
Forum Acusticum Budapest 2005. Proceedings. CD-ROM : 29 Aug - 2 Sep 2005: Acoustics: science and technology for knowledge based society and healthy environment
Budapest: OPAKFI Tud. Egyesület, 2005
ISBN: 963-8241-68-3
Forum Acusticum <4, 2005, Budapest>
Conference Paper
Fraunhofer IBP ()
musikalische Akustik

Sound recordings of twelve pipe organs from four European countries (six Baroque, two Romantic and four contemporary) were subjectively evaluated. Principal sound contexts of Principal 8' (pitches C2, C3, C4, C5, and C6) were judged by twelve organ experts on dissimilarity in timbre. Perceptual space was constructed for each of the five tested sound contexts, using the multi-dimensional scaling latent class approach. Levels of individual harmonics and levels in third of octaves were used for the interpretation of perceptual spaces. The method of embedding of these acoustic characteristics into perceptual space contributed to the discovering of the main spectral features, significantly influencing perception, and established their relations (similarity, opposition, or independence) in each context. Level of the fundamental, levels of high frequency components and levels of noise components in the band about 100 - 200 Hz proved to be the main spectral features, influencing the perception of the timbre of the organ pipe sound. Pitch dependence of their mutual relations and frequency positions are also found and discussed.