Well, actually all that I wanted you to graph was: y=(1/3) * sin(3x) + sin(x)

sin(x) would be our fundamental frequency, say a 40hz bass note. Pretend you turned up the volume, and clipped the waveform totally. You would have a fundamental of 40hz (which would be the sin(x)). You would also have a harmonic distortion content. y=(1/3) * sin(3x) + sin(x) is the third harmonic, which is 1/3 the amplitude of the orignal. The 5th would be 1/5 and so on, but we arent graphing those.

After you graph that, only graph sin(x) on y2 at the same time for comparision. As you can see, it's peak amplitude is equal to that of the wave with the fundamental and its 3rd harmonic. BUT, the power is MORE, because the risetime is faster, and it "stays" at the peak longer. So, the harmonic distortion increases power. As you go up the scale of harmonics, at some point, the voice coil's inductance will begin to attnuate the higher frequency harmonics, making the square wave less "square".

Lemme know as soon as you do that and I'll explain more.

Last edited by a moderator: Jan 20, 2004