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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.

Post Subject: Reproducible?Posted by Bill on: 4/11/2011

It's interesting that the most variation is in the upper bass, lower midrange. By eyeball,the peaks look like 240 and 480 Hz. or about the 2nd and 3rd harmonic of 60 Hz., although there is only a slight peak at 60. Is that a fluke or related to something? Is there a way to determine the exact Hz. for the peaks

Could it be that the really great recordings of the 50's and 60's compared to those today were due to the fact that they had more "great electricity days to record.

Is this result reproducible; meaning you already have a great day recording. Now repeat the recording every day the sound is poor to see if the curve remains the same or varies and how the variance relates to the sound difference.

Also don the bad days, do graphs of the difference between straight from the wall and the pure power both on and off battery to see how its affecting the noise. If you show the pure power engineers these results it would give them a way to quantify what they are doing and may help them in determining how to improve on the product, a plus for us.

I do believe if these experiments are continued, it would present a great paper for the AES. It certainly gives clear evidence that electricity quality does make a difference in the recording chain which they have been disputing for years.

Bill

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