Image talk:Sine from square waves.gif

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Great! Does look like a sine wave but without the noise subtracted or clipped/shorn off! Question Can a pure sine wave of the same frequency be subtracted from the lame sine approximation and this difference error in turn subtracted from the square-wave synthesised waveform? Reader,Suresh Norman

Well, sure, that'd work (afterall, lamesine - (lamesine - sine) = lamesine - lamesine + sine = sine). But if I had a sine wave offhand, why would I even bother to approximate it? :P
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