This video gives you the key information about common waveforms found in electronics and lets you hear what they actually sound like. The waveforms include: sine waves, square waves, triangular waves and ramp or sawtooth waveforms.

Having a knowledge of what they sound like can help give a better understanding when dealing with them in electronic circuits or other situations. Looking at these waveforms can help understand how some musical instruments,: keyboards, synthesizers and the like work.

The sine wave is the most basic, but also the most important. It contains no harmonics, but it is found that other repetitive waveforms can be made up from a series of them as shown in the video.

The square wave alternates between two values, sometimes called high and low or "1" and "0" A proper square wave has equal high and low periods.

A triangular waveform ramps up and down, having equal times for the rising and falling sides.

A ramp is the same but with unequal rise and fall sizes.

These waveforms, although not often used directly, help understand the sort of techniques employed in musical synthesizers, keyboards and other musical generators.

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