The best plug in filter ever!

@dogberry

Yeah I think it does depend on the size of the effect. I think it pretty much all boils down to exactly that. So my point is that if the effect is small enough that you even feel the need to test it,... probably not worth wasting any more of your time on it.

Any work published in any scientific journal has to pass muster when it comes to statistical validity.

BUT

If home testing is fun & enjoyable, sure why not! : )

If I like the Puros, I’ll double-blind test it with my wife listening, since she is biased against me spending money and her hearing is not as rolled off as mine. If my tests support the product... it’s still anecdotal but I think you’re right it has less chance of being biased.

@holydean  I hope your filter satisfies your hopes and that your wife thinks you're very clever for buying it. I don't want to rain on anyone's parade, and what people choose to spend their money on is not my business. As I have said before (and no doubt will have to say again) when recommending anything for purchase by others, there should be some kind of evidence for its benefits, or at least a potential mechanism of action. Without that, we are in testimonial land, and thus lost without a compass.

Cmon Man, can’t you just enjoy the sound improvement? Or do you enjoy the analysis?

Anyway, if you don’t like it, you can return if for a refund.

ozzy

I ran it in G*Power, and for my test to be validly predictive of the entire population of listeners, it would need to include at least 89 men and women who were randomly selected. Otherwise, my test results are only going to prove that my wife can (or cannot) clearly hear the difference that it is making in my system. She will also have to listen to at least 30 different sets for me to be able to calculate the correlation strength. But again, this is all being done for fun. 

A. If my testing says that my wife could not consistently detect any difference in a double-blind test, then all the Puron nay-sayers can post pictures of snake oil in here and all of us who bought will just have to endure it. 

B. If my testing reveals that my wife can consistently detect differences with the Puron in the double-blind test, then the nay-sayers will all have to wear paper cone hats for a day and go and buy a Puron in penance. 

Just to put a little hole in your test. I have found that random removal and reinserting the Puron’s to be very difficult to discern differences. It takes a few hours for the full effect.

How will you account for this with your tests?

ozzy’’