|There are only two forces in the world, the sword and the spirit. In the long run, the sword will always be conquered by the spirit. - Napoleon Bonaparte|
Vibrational Modes of the (0,1) Mode
The first or the fundamental mode of vibration of a circular membrane is the (0,1) mode. This is the mode that is excited when the drum is struck in the center of the membrane. It sounds like a deep "thump." The vibrations occur at the lowest frequency of all of the drum vibrational modes.
When vibrating in the (0,1) mode, the drumhead is acting as a monopole vibrational sound source and is efficient at transferring its vibrational energy to the surrounding air. In fact, it is so efficient that the sound of this mode normally disappears within a fraction of a second as the energy is radiated away. Therefore, this short duration of sound, which has no easily discernable pitch, does not allow this vibrational mode to contribute much of the musical quality of the drum.
Longitudinal Wavelength Sound Waves Pitch and Frequency Speed of Sound Doppler Effect Sound Intensity and Decibels Sound Wave Interference Beat Frequencies Binaural Beat Frequencies Sound Resonance and Natural Resonant Frequency Natural Resonance Quality (Q) Forced Vibration Frequency Entrainment Vibrational Modes Standing Waves Law of Octaves Psychoacoustics Tacoma Narrows Bridge Schumann Resonance Animal BioAcoustics More on Sound
Law Of Octaves Sound Harmonics Western Musical Chords Musical Scales Musical Intervals Musical Mathematical Terminology Music of the Spheres Fibonacci Sequence Circle of Fifths Pythagorean Comma
DrumsDrum Vibrational Modes
Aristotle Copernicus Einstein Fibonacci Hermann von Helmholtz Kepler Sir Isaac Newton Max Planck Ptolemy Pythagoras Thomas Young
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