Grey noise

[angel]

Hi.

I've been looking for a downloadable grey noise generator, or a (preferrably long) grey noise sample, to do some headphone eq.

Does anyone know where I might find this?

Sincerely.

[GRollins]

Eh?

Grey

[mpmarino]

Grey noise

yep

[Mr Evil]

I have never heard the term before, so I did some searching. I didn't have much luck though, since almost every definition of it is a copy of the same text (no way of determining which is the original):

noise subjected to a psychoacoustic equal loudness curve (such as an inverted a-weight curve) over a given range of frequencies, so that it sounds like it is equally loud at all frequencies.

There was one which said it was just another name for white noise, and a few mentions without a definition.

I would suggest that the best way of going about it would be to generate white noise and then filter it.

[jam]

mpmarino,

You beat me to it .........................................

Jam

[Radon]

You just have to know where to search:

Wikipedia

[Mr Evil]

Originally posted by Radon
You just have to know where to search:

Wikipedia

As I said, all the definitions use virtually identical wording to the one I quoted above, indicating that everyone is just quoting a single source of unknown reliability. It may or may not be the "official" definition, if one exists.

[Sch3mat1c]

Well, it says inverted A-weighting, meaning there's more power (as measured) at fringe frequencies and less in the middle range where hearing is better. This (spectra weighting, that is) probably all started with Bose.

Tim