When did Wattage become other than RMS?

[scottjoplin]

Like Miles making his trumpet sound like an electric guitar....

 

[Wavebourn]

Here is an example of dynamically distorted grand piano sound:

http://wavebourn.com:/music/piano.flac

 

[scottjoplin]

I think I'm probably having problems opening that on my crappy chromebook, all I'm getting is half a second of multiple tones....

 

[Wavebourn]

I think I'm probably having problems opening that on my crappy chromebook, all I'm getting is half a second of multiple tones....

Try this one:

http://wavebourn.com/music/piano.wav

 

[scottjoplin]

That's better thanks. I built and played with analogue synths years ago and was surprised how much affect on the sound just varying the envelope had

 

[Wavebourn]

If power is Vrms^2/R..................I'm confused..........

They use a sinusoidal signal to measure RMS, so what to be confused about? It is like a Current Feedback Amplifier term, where feedback by current in input stage meets an impedance of a feedback by voltage loop around the whole amp.

 

[DF96]

I was tempted to add "average" to my one-word post, but no one says an incandescent light bulb uses 100 watts average power, they just say 100 watts, and that's the amount of power it uses.

No, it is the average power. Power is not an amount; it is a rate, the rate of using energy. People usually say 'power' when they actually mean 'average power' and in most cases this does not matter. Problems can emerge when people start talking about 'maximum power' when they actually mean 'maximum average power'.

If power is Vrms^2/R..................I'm confused..........

Average power is Vrms^2/R. Power is V^2/R, so for sine wave drive it varies from 0 to twice the average.

 

[scottjoplin]

Aha! Thanks