In general, the terms "pure sine wave" and "sine wave" are used interchangeably to refer to the same waveform. Both terms describe a mathematical function that represents a smooth oscillation, typically described by the trigonometric function sine.
A sine wave is a periodic waveform that oscillates smoothly between positive and negative values over time. It is characterized by its amplitude (peak value), frequency (number of cycles per unit of time), and phase (the starting point of the waveform). Sine waves have a symmetrical shape and are commonly encountered in various fields, including physics, engineering, and signal processing.
The term "pure" in "pure sine wave" often emphasizes the ideal or pristine nature of the waveform. In practical terms, a pure sine wave refers to a sine wave that is free from any distortion or harmonic components. It represents a perfect mathematical sine function without any additional frequencies or distortions superimposed on it.
Pure sine waves are commonly used as reference signals in many applications, including power systems, electronics, audio equipment, and communications. They provide a consistent and predictable waveform that facilitates accurate measurements, efficient transmission, and reliable performance of various systems.
So, while both terms are often used interchangeably, "pure sine wave" typically emphasizes the absence of distortion or additional frequencies, whereas "sine wave" refers to the general mathematical form of the waveform.