Does aliasing ever occur in non-electronic analog audio devices?

[Green Xenon [Radium]]

Hi:

Does aliasing ever occur in non-electronic analog audio devices -- such
as pianos, violins, flutes, trombones?

Thanks,

Radium

[geoff]

Green Xenon [Radium] wrote:
> Hi:
>
> Does aliasing ever occur in non-electronic analog audio devices --
> such as pianos, violins, flutes, trombones?

Can you not think of somthing more important to obsess about ?

geoff

[Green Xenon [Radium]]

Please answer my question: "Does aliasing ever occur in non-electronic

[Don Pearce]

All right here is a definitive answer. No.

In order for aliasing to happen a signal MUST be sampled. Aliasing is a
result of ambiguity in the shape of a signal. Any signal that is
continuous has no ambiguity, it is totally defined. A signal that is
sampled has gaps between the samples in which it is impossible to know
what the signal was doing; those gaps are the area of ambiguity that
permits aliasing. An alias is simply an alternative trajectory that will
fit the sampled points as well as any other.

d

[UnsteadyKen]

Don Pearce said:

> Aliasing is a
> result of ambiguity in the shape of a signal. Any signal that is
> continuous has no ambiguity, it is totally defined. A signal that is
> sampled has gaps between the samples in which it is impossible to know
> what the signal was doing; those gaps are the area of ambiguity that
> permits aliasing. An alias is simply an alternative trajectory that will
> fit the sampled points as well as any other.
>
>

A superbly lucid and concise explanation, Don.

This dimwit is greatly enlightened, thank you.
--
Ken

[Don Pearce]

You're welcome. But the big question is whether our friend Radium gets
it too. I'm not holding my breath.

d

[Green Xenon [Radium]]

Thank a bunch, Don. That was they type of answer I was looking for. Not
the garbage posted by the jerks who intentionally trivialize interesting
questions.