perustaajuuden

Perustaajuuden, also known as fundamental frequency, is the lowest frequency of a periodic waveform, such as a sound wave or a light wave. It is the frequency at which the wave repeats itself. In the context of sound, the fundamental frequency is the lowest pitch that a musical instrument or voice can produce. For example, the fundamental frequency of the note A4 is 440 Hz. In music theory, the fundamental frequency is often referred to as the "root" or "base" frequency. In physics, it is used to describe the basic properties of waves, such as their period and wavelength. The fundamental frequency is an important concept in many fields, including music, acoustics, and signal processing. It is typically measured in Hertz (Hz), which is the unit of frequency. The fundamental frequency can be determined by analyzing the waveform using techniques such as Fourier analysis.