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Old November 22nd 10, 02:38 PM posted to rec.audio.tech,rec.audio.pro,comp.dsp
Arny Krueger
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"Mike Rivers" > wrote in message

> On 11/20/2010 3:53 PM, rickman wrote:
>
>> I don't recall any such restriction on N. Certainly the
>> measurement has just as much meaning with N = 1 as any
>> greater N. Think of it as a limit as N approaches 1
>> then. The point is that it is as valid a measurement
>> for a single point as it is for many points. It
>> represents the equivalent voltage that would produce the
>> same power as DC of the same voltage.

>
> Consider the effective value of RMS. It's the amount of
> heat can be produced by the electrical energy. If you
> have only one sample, no matter how high it is, do you
> really think it will warm up your coffee?


Depends on the sample rate. If the sample rate is one sample every 10
minutes... ;-)


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