Harmonic Analysis of Mallet Percussion By Max Candocia
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- Slide 1
- Slide 2
- Harmonic Analysis of Mallet Percussion By Max Candocia
- Slide 3
- Goals Basic understanding of sound waves and mallet percussion
Understand harmonic analysis Understand difference in sounds of
different mallets and striking location
- Slide 4
- Marimba Photo courtesy of vichitex.com Vibraphone Photo
courtesy of woodbrass.com Recording: Vermont Counterpoint,
Nathaniel Bartlett Recording: La Fille Aux Cheveux de Lin, Ozone
Percussion Ensemble
- Slide 5
- Xylophone Photo courtesy of onlinerock.com Recording: Fantasy
on Japanese Wood Prints
- Slide 6
- Sine: Sawtooth: Sound Waves Vibrating medium (ie. Air, water,
ground) Longitudinal Harmonics Sinusoidal Components Images
courtesy of Wikipedia
- Slide 7
- Qualities of Harmonics Frequency Cycles per second (Hertz);
determines pitch Amplitude Power of wave; determines loudness Phase
Location of harmonic relative to other harmonics Photo courtesy of
Wikipedia Photo courtesy of physics.cornell.edu Photo courtesy of
3phasepower.org
- Slide 8
- Harmonic Analysis Harmonics of Kelon xylophone struck in center
with hard rubber mallet
- Slide 9
- Vibraphone Harmonics Dry: Wet: InstrumentMalletLocation#
HarmonicsH1 dBH2 dBH3 dBH4 dBH5 dB VibraphoneBlackDry56190.8133
VibraphoneBlackWet2161.1 VibraphoneRedDry3223.51.5
VibraphoneRedWet11 VibraphoneWhiteDry4160.590.6
VibraphoneWhiteWet2251.5
- Slide 10
- Xylophone Harmonics InstrumentMalletLocation# HarmonicsH1
FreqH2 FreqH3 FreqH4 FreqH5 Freq XylophoneHard
RubberCenter4886.9175026705100 XylophoneHard
RubberEdge4886.9176026705150 XylophoneHard
RubberNode3886.852670.55155 XylophoneNatural
RubberCenter3886.917502670 XylophoneNatural
RubberEdge3886.9517602670 XylophoneNatural
RubberNode5887175921672670.55150
XylophonePlasticCenter4886.9175026705100
XylophonePlasticEdge4886.95176026705170
XylophonePlasticNode3886.852670.55200
- Slide 11
- On the Node
- Slide 12
- Marimba Harmonics InstrumentMalletLocation# HarmonicsH1 FreqH2
FreqH3 FreqH4 Freq MarimbaBlackCenter3221.5665990
MarimbaBlackEdge4221.46658852240 MarimbaBlackNode3221.5885.52210
MarimbaRedCenter2221.6664 MarimbaRedEdge3221.4664885.5
MarimbaRedNode2221.5885
- Slide 13
- Using a Stick on Marimba InstrumentMalletLocation# HarmonicsH1
FreqH2 FreqH3 FreqH4 FreqH5 FreqH6 Freq
MarimbaStickCenter4222210022102400 MarimbaStickEdge3221.58852205
MarimbaStickNode6221855.32064221039004460
- Slide 14
- Conclusion Sounds made of harmonics Relative phase has no
apparent pattern in mallet percussion Vibraphone very simple sound
when wet, more complicated when dry Soft mallets on marimba and
vibes induce sounds with less harmonics Xylophone has different
sounds depending on striking location Harder mallets on marimba
produce trends in harmonics similar to xylophone
- Slide 15
- Thanks to: Professor Steve Errede Adam Watts Dan Carson 3M
Richard Feynman playing conga; photo courtesy of
physics.miami.edu