Note the steps? So this happens because there is a pulse that goes to a specific height and once established a sample and hold circuit keeps that level constant until the next pulse.
Once you have this stepped waveform, it's a pretty simple matter to remove all the jaggie steps with a simple filter and the result is a perfect sine wave.
And one last thought as long as we're continuing to poke the proverbial box.
I have said before that if you have a vinyl disc and make a 44.1kHz/16 bit copy of that analog vinyl disc, the sound will be indistinguishable from the original. This is because with vinyl or a tape recorder, you have a limited scope recording (vinyl and tape has limited everything relative to a CD) and capturing that limited recording on a CD is easy. The opposite isn't true.
A live event, recorded on a high resolution system, cannot be accurately copied on a lower resolution system such as a tape recorder or vinyl record.
And on that one, I have thought it through for quite some time.
Running at the mouth
Note the steps? So this happens because there is a pulse that goes to a specific height and once established a sample and hold circuit keeps that level constant until the next pulse.
Once you have this stepped waveform, it's a pretty simple matter to remove all the jaggie steps with a simple filter and the result is a perfect sine wave.
And one last thought as long as we're continuing to poke the proverbial box.
I have said before that if you have a vinyl disc and make a 44.1kHz/16 bit copy of that analog vinyl disc, the sound will be indistinguishable from the original. This is because with vinyl or a tape recorder, you have a limited scope recording (vinyl and tape has limited everything relative to a CD) and capturing that limited recording on a CD is easy. The opposite isn't true.
A live event, recorded on a high resolution system, cannot be accurately copied on a lower resolution system such as a tape recorder or vinyl record.
And on that one, I have thought it through for quite some time.
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