Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài:"Classifying xylophone bar materials by perceptual, signal processing and wood anatomy analysis" | Ann. For. Sci. 63 2006 73-81 INRA EDP Sciences 2006 DOI forest 2005099 73 Original article Classifying xylophone bar materials by perceptual signal processing and wood anatomy analysis Loic BRANCHERiAUa Henri BAiLLÈRESa Pierre DÉTiENNEa Richard KRONLANDb Bloen METZGERb a CIRAD - Forêt TA10 16 avenue Agropolis 34398 Montpellier Cedex 5 France b CNRS - LMA 31 chemin Joseph-Aiguier 13402 Marseille Cedex 20 France Received 10 December 2004 accepted 18 May 2005 Abstract - Several different areas of expertise are required to analyse the acoustic qualities of wood. The practical experience of musical instrument makers is extremely valuable especially with respect to selecting the most suitable wood species for different applications. Knowledge on the mechanics and anatomy of wood is also essential to determine the factors underlying the acoustic qualities of woods. In addition music synthesis research on psychoacoustic issues can highlight perceptual attributes that account for the acoustic qualities of different woods. The present study was focused on 58 tropical wood species used in xylophone-type percussion instruments. Each wood was classified by an xylophone maker and on the basis of an analysis of radiated sound signals and these separate classifications were compared with the aim of determining key signal parameters that have an impact on the acoustic quality of wood. Relationships between perceptual classifications signal parameters and wood anatomical characteristics were analyzed. wood musical quality acoustic properties vibration wood anatomy Résumé - Classifications de lames de xylophone par analyse perceptive traitement du signal et anatomie des bois. Le bois est un matériau essentiel pour la fabrication de nombreux instruments de musique. En évaluer les qualités acoustiques relève de la mise en commun de plusieurs domaines de compétence. D une part les luthiers apportent un savoir empirique très précieux qui permet le choix des meilleures essences. D
