Sine wave with changing frequency

1. Can we add sine waves of different frequencies?
2. How does frequency affect sine wave?
3. How do you change sine frequency?

Can we add sine waves of different frequencies?

You can't add two sines of different frequencies. This is a fundamental limit which much of math and physics takes advantage of. Its also the basis of the fourier transform. To put it simply, sines of different frequencies are orthogonal.

How does frequency affect sine wave?

The number of times the sine wave goes through a complete cycle in the space of 1 second is called the frequency. Indeed the unit used to be cycles per second, but now the unit of measurement is hertz (Hz). A frequency of 1000Hz, or 1 kHz, means that the sine wave goes through 1000 complete cycles in 1 s.

How do you change sine frequency?

The best option is usually to just create an entirely new sine wave at the desired frequency. If you are forced to “convert” it, consider using frequency mixing. That is, multiply your sine wave by another sine wave at a different frequency. The result will be two waves at the sum and difference frequencies.