Amount of a waveform's deviation from center. When used to describe sound, amplitude means volume. [Friend, David, Learning Music with Synthesizers]

The difference between 0 and maximum or minimum changes of polarity within a wave or cycle.

The magnitude of periodic dynamic motion (vibration). Amplitude is measured in terms of peak-to-peak, zero-to-peak, rms, or average. [Field of Rotating Machinery Measurment, Monitoring and Analysis, Bentley Nevada Corporation]

Amplitude refers to the strength, or loudness, of a sound, or of the strength of an electrical signal representing sound. If the sound or signal is represented as a wave pattern on an oscilloscope or graph, the amplitude corresponds to the height of the wave (i.e., the magnitude of the swing in each cycle). [Fantel, Hans, The True Sound of Music - A Practical Guide to Sound Equipment for the Home]

"The question has long been asked by research scientists why it is that the inert gases will not mix, or unite with "any of the other elements." The first answer is that the inert gases are not electrically divided and conditioned elements, as all of the others in the nine octaves are. The inert gases begin in the first octave as invisible white fluorescent light of zero motion. They end at the 9th cathode in the 9th octave, as visible white fluorescent light, which has reached a speed of nearly 186,400 miles per second. Fluorescent light is that light which begins in the undivided electric spectrum. It is the beginning and end of motion. All motion is either red or blue, according to its sex. The end of motion at the amplitude of the 9th octave means that the divided spectrum has been united as one colorless, sexless light which has been under such high compression that it has reached its limit of conditioning by motion and must be transformed from the white light of visible motion to the invisible white Light of Magnetic stillness. The fluorescent light is that ending of electric power to divide motion into pairs, and to condition the pairs with the opposing sex tensions of electrically divided spectrum opposites. The inert gases are not pairs. They are not divided. Division takes place by light projected from them, but that projected light of spectrum pairs is the basis of the electrochemical elements, which have great volume and density in comparison." [Atomic Suicide, page 261-262]

If the effects of notes and chords had depended entirely on their mathematical ratios, then the effect of the subdominant, tonic, and dominant would have been alike; for these three chords have exactly the same ratios. It is the law of position which gives the tonic chord its importance, and not any special ratios embodied in its structure. The ratio of 2 to 1 has a pure, unmixed, invariable character, always realized in the interval of the octave. The notes produced from 1 by the first, second, and third powers of 3 have different degrees of centrifugal force. The character of the notes produced by the first power of 5 depends on the character of the notes from which they are derived, namely, 1, 3, and 9. The final character of the notes and chords derived by the same ratios is determined by the amount of force which they have acquired from the way in which they have been derived, and from their position in the system; and no matter where these notes may afterwards be [Scientific Basis and Build of Music, page 37]

See Also

amplitude element
Amplitude Modulation
Amplitude of Force
amplitude of the wave
amplitude wave position
first comparison and combination of quantities
laws of quantities and motions
multiplied amplitude
order of quantities
quadrature amplitude modulation
quantities and motions
thought wave amplitude
wave amplitude

Created by Dale Pond. Last Modification: Monday March 15, 2021 04:25:21 MDT by Dale Pond.