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A sinusoidal wave or function, that is, one moving in SIMPLE HARMONIC MOTION according to the function
where A is the AMPLITUDE of the wave, f its FREQUENCY, and t is time.
According to the FOURIER THEOREM, any periodic WAVEFORM may be analyzed as the sum of a series of sine waves with frequencies in a HARMONIC SERIES, each of which has an amplitude and phase angle given by the Fourier coefficients. Since a sine wave has only a single frequency associated with it, it may be considered the simplest sound.
See: FOURIER ANALYSIS, FOURIER SYNTHESIS, GRANULAR SYNTHESIS, LAW OF SUPERPOSITION, SIMPLE TONE, SINE TONE, SOUND SYNTHESIS.
Two CYCLEs of a sine wave showing the amplitude of the pressure variation.
Sound
Example: Sine wave at 100
Hz.
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