The article is specifically trying to achieve those harmonics. This is the initial problem.
> A linear combination (scaled sum or difference) of two balanced square waves will necessarily still have all even harmonics at zero
Yea, that's why you need the phase offset, as I mentioned.
> and thus cannot emulate a square wave with a duty cycle different from 50%.
You can /synthesize/ a square wave at any duty cycle you like. We're still doing Fourier just without the whole transform.
The article is specifically trying to achieve those harmonics. This is the initial problem.
> A linear combination (scaled sum or difference) of two balanced square waves will necessarily still have all even harmonics at zero
Yea, that's why you need the phase offset, as I mentioned.
> and thus cannot emulate a square wave with a duty cycle different from 50%.
You can /synthesize/ a square wave at any duty cycle you like. We're still doing Fourier just without the whole transform.