Phil Leigh;348700 Wrote: > My head hurts. > > Sean, are you saying that the number sequence 0,1,0,-1 (repeated at a > given frequency) is not a valid mathematical representation of an > arbitrary squarewave? >
That's exactly right (within the context of PCM audio data). BTW the sequence you've given is actually trying to be a triangle wave, but I get what you mean. Triangle wave are also impossible to represent in PCM. > And why does the FIR display in the editor show it as a squarewave and > not as it's ringing, overshooting equivalent that I can see on the > scope after it has been reconstructed? If an audio editor is displaying _any_ signal with a slope greater than can be represented at the nyquist frequency, then it is wrong. But it's acceptable for most practical editing purposes, and much easier for the programmer to implement. -- seanadams ------------------------------------------------------------------------ seanadams's Profile: http://forums.slimdevices.com/member.php?userid=3 View this thread: http://forums.slimdevices.com/showthread.php?t=53345 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
