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Originally Posted by terminal pharmacy
white noise is all frequencies at equal power, it is completely constant. speakers cannot actually produce real saw, square or random waveforms accurately as the driver cannot physically move like that, speakers can only produce sine waves accurately. everything else saw tooth, square that you hear coming out of a speaker is an approximation.
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Of course I know that
To do perfect square waves you'd need to be able to go from zero volts to a higher voltage instantaneously.
I was just posting what works for me, that's all.