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Re: Finally some rational arguments

Before the square wave argument starts again, analog mediums are bandlimited too. You can't cut a square edge onto a spinning LP. Besides, all musical signals are naturally bandlimited, so at no time does a music storage medium ever require infinite bandwidth to be faithful to the source.

And I have one correction. You said the sampling theorem requires infinitely valued samples. This isn't really true. Quantization imposes a limited dynamic range, that is all.

It is actually possible to design a test signal, consisting of nothing more than two sine waves that vary by time and amplitude, that accentuates imperfections caused by jitter and quantization error.

If this specific test signal is used as the basis for measuring dynamic range and THD, digital would actually compare quite poorly to LP. Using such a test signal, I can very easily demonstrate digital has very poor "resolution" compared to even the cheapest turntable. :-)

That would be an interesting experiment. Would these signals be low in level and close to the Nyquist frequency?

Dave


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