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Old 06 December 2013, 00:00   #99
mc6809e
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Join Date: Jan 2012
Location: USA
Posts: 281
Quote:
Originally Posted by pandy71 View Post
Nope, you are confused - this is common - people don't understand that Nyquist conditions require presence of the reconstruction filter - ideal reconstruction filter will produce sine wave.
http://en.wikipedia.org/wiki/Reconstruction_filter
I know all about reconstruction filters. I asked the question rhetorically so as to illustrate to others that there was an ambiguity in interpreting what the stored waveform really is.

If the Amiga had been built with a programmable reconstruction filter that could be tuned to the waveform output frequency, then it would be a sample player.

That fact that it only has a couple of gently sloping fixed low pass filters (and even one of these can be turned off) tells us that simple signal reconstruction and playback was not entirely the goal. Synthesis was also the goal.
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