Green Xenon [Radium] wrote:
> geoff wrote:
>> 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 im****tant to obsess about ?
>>
>> geoff
>>
>
>
> Please answer my question: "Does aliasing ever occur in non-electronic
> analog audio devices -- such as pianos, violins, flutes, trombones?"
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.
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