equivalent of white noise for magnetic pickups?



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equivalent of white noise for magnetic pickups?

Postby AC128 » Wed Feb 08, 2017 10:56 am

Hi.

I'd like to have a way to measure tonal characteristics of pickups while eliminating as many variables as possible - like the guitar and strings for example.
Is there a way to create a measuring signal akin to white noise for a magnetic pickup?

thanks
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Re: equivalent of white noise for magnetic pickups?

Postby kosta » Wed Feb 08, 2017 3:33 pm

Very interesting. Could you use an electric screwdriver or drill to disrupt the pickups' magnetic field? Or to twirl a thin piece of steel over the pickups at a uniform height?

How are you measuring the output of the pickups to capture the tonal information? On a scope?
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Re: equivalent of white noise for magnetic pickups?

Postby AC128 » Wed Feb 08, 2017 3:41 pm

hey kosta,
yes I was also thinking of a drill or something with a electric motor :)

I would record the output and use a frequency analyser to visualise it like this:
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Re: equivalent of white noise for magnetic pickups?

Postby kosta » Wed Feb 08, 2017 5:49 pm

I'm into it. I wonder if a small, exposed electric motor would generate enough of an electric pulse to function as a "tone generator" of sorts. Thinking of the type of small motor that might be found in a slot car or something.

Interesting thread on the Seymour Duncan forums: http://www.seymourduncan.com/forum/show ... y-analysis
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Re: equivalent of white noise for magnetic pickups?

Postby DRodriguez » Wed Feb 08, 2017 6:16 pm

Ideally, you want to use a sin sine wave frequency sweep rather than white noise for frequency response testing. Maybe that would be easier to reproduce than white noise.
Last edited by DRodriguez on Wed Feb 08, 2017 6:21 pm, edited 2 times in total.
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Re: equivalent of white noise for magnetic pickups?

Postby Chankgeez » Wed Feb 08, 2017 6:18 pm

DRodriguez wrote:Ideally, you want to use a sin wave frequency sweep rather than white noise for frequency response testing. Maybe that would be easier to reproduce than white noise.


Bring on the waves of sin. :D
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Re: equivalent of white noise for magnetic pickups?

Postby AC128 » Fri Feb 24, 2017 12:59 pm

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