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Chapter Five Polyrhythm
Polyrhythm • Multi-Layered Rhythmic Structure • Organized by a Common Unit • Too Rapid to Be Perceived as a Beat
Percussion Family • Idiophones • Membranophones
Idiophones Produce their sounds from the materials from which they are made--such as claves, xylophones, cymbals
Idiophones Indefinite Pitch cymbals (Turkish/Chinese)triangletam-tamwoodblock (Chinese––ban)clavescastenetstemple blocksmaracasratchetgüiro Definite Pitch xylophonemarimbaganda/amadina (African)vibraphonesglockenspiel (bells)chimes (tubular bells)steel drumsgong
Membranophones Produce their soundsthrough the vibration of a stretched skin or membrane Or a combination of membrane and idiophone.
Membranophones Definite Pitch <nakers timpani>tabla kalangu dundun
Membranophones Indefinite Pitch No Raised Rims bongoscongastambourineshaman drumsbodhran Raised Rims field drumbass drumtom-tomstimbales snare drum (sound modified by metal snares on bottom head)
Idiophones Agogo Xylophones Shakere(rattles) W. African Percussion Instruments
W. African Percussion Instruments Membranophones Djembe(hourglass drum) Dundun(talking drum)