what is a fundamental frequency
The fundamental frequency, often referred to simply as the fundamental, is defined as the lowest frequency of a periodic waveform.In music, the fundamental is the musical pitch of a note that is perceived as the lowest partial present.In terms of a superposition of sinusoids (e.g. Fourier series), the fundamental frequency is the lowest frequency sinusoidal in the sum.In some contexts, the fundamental is usually abbreviated as f0 (or FF), indicating the lowest frequency counting from zero.y the same method as above, the fundamental frequency is found to be. At 20 Â°C (68 Â°F) the speed of sound in air is 343 m/s (1129 ft/s). This speed is temperature dependent and does increase at a rate of 0.6 m/s for each degree Celsius increase in temperature (1.1 ft/s for every increase of 1 Â°F).