Natural sources of Pink Noise for Mic Testing - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 16 Old 02-27-19, 07:16 PM Thread Starter
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Natural sources of Pink Noise for Mic Testing

Need to check a measurement mic frequency response and of course a speaker will color the graph.

I have heard an Air Compressor can be used to generate full audio spectrum Pink Noise. True? Other sources of Pink Noise?

Or.. I there a good DIY way of getting an accurate frequency response graph of a mic.

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post #2 of 16 Old 02-28-19, 04:30 PM
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Re: Natural sources of Pink Noise for Mic Testing

I’ve been doing this room measurement stuff since the early ’90s and I’ve never heard of compressed air being used as pink noise. Seems to me it would be severely lacking in the low frequencies.

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Wayne



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post #3 of 16 Old 02-28-19, 04:45 PM
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Re: Natural sources of Pink Noise for Mic Testing

Quote:
Wayne A. Pflughaupt wrote: View Post
Iíve been doing this room measurement stuff since the early í90s and Iíve never heard of compressed air being used as pink noise. Seems to me it would be severely lacking in the low frequencies.
In addition, the spectral balance will shift with the pressure and the relief opening.

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post #4 of 16 Old 02-28-19, 05:34 PM Thread Starter
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Re: Natural sources of Pink Noise for Mic Testing

Any suggestion on source or other means for a DIYer?
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post #5 of 16 Old 02-28-19, 09:03 PM
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Re: Natural sources of Pink Noise for Mic Testing

You can download a pink noise signal here

https://www.hometheatershack.com/for...tml#post317700

Regards,
Wayne



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post #6 of 16 Old 03-01-19, 08:55 AM
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Re: Natural sources of Pink Noise for Mic Testing

Quote:
Wayne A. Pflughaupt wrote: View Post
You can download a pink noise signal here

https://www.hometheatershack.com/for...tml#post317700

Regards,
Wayne
I think the OP is looking for a physical, rather than a recorded source. The latter would be "colored" by the transducer used to play it and it would have to be calibrated first before he could use it to calibrate his microphone. Circle of confusion.

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post #7 of 16 Old 03-09-19, 07:02 AM
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Re: Natural sources of Pink Noise for Mic Testing

Tell about your mic?
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post #8 of 16 Old 03-09-19, 07:03 AM
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Re: Natural sources of Pink Noise for Mic Testing

DIY or manufactured ?
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post #9 of 16 Old 03-09-19, 07:06 AM
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Re: Natural sources of Pink Noise for Mic Testing

Do you have any other mic's ?





























?
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post #10 of 16 Old 03-09-19, 07:08 AM
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Re: Natural sources of Pink Noise for Mic Testing

I need at least 5 posts to add a link that may help
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