In article ,
Brian Gaff wrote:
We used to use squarewaves for the following.
To show how bad tape machines were...
To show the tone control effects

You can also use them to show up the lousy phase response of most
loudspeakers. :-) Although by the same token they also show the Quad ESLs
are rather good in this respect.

However, you need to look at the harmonics on a true square wave,

Not sure which purpose you have in mind. You can of course use either time
domain or frequency domain depending on what your specific purpose may
"need".

which of course cannot actually exist.

Yes, that is something I point out on the webpage, and explore the
practical implications. One being that tests with bench waveform generators
may give different results to normal domestic audio sources. :-)

Slainte,

Jim

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