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Topic: Is a pink noise generator possible? (Read 334 times) previous topic - next topic

JustLookin

I am new to the forum and pretty new to Arduino in general. In my searching through the googlenet :D I have not found anything on pink noise generation using an Arduino. So, my question is, is it possible and if possible, how?

jremington

#1
Mar 08, 2018, 08:46 pm Last Edit: Mar 08, 2018, 09:04 pm by jremington
That would depend on the bandwidth, but I would say there is no point in using Arduino. The standard Arduino is too slow and limited to do much in the way of even audio signal processing.

wvmarle

Lots of randomness, lots of different frequencies transposed on one another, lots of high frequencies - doesn't sound like an Arduino job at all.
There must be plenty of cheap devices that can do just that in hardware based upon amplifying thermal noise or so. A quick Google search turned up many simple looking circuits for producing noise.
Quality of answers is related to the quality of questions. Good questions will get good answers. Useless answers are a sign of a poor question.

ard_newbie

Apart from an hardware solution, It seems that one can generate pink noise from a white noise generator :

http://www.firstpr.com.au/dsp/pink-noise/#characteristics

An arduino Due can be a white noise generator throughout its True Random Number Generator (TRNG).

hardik311095

I would highly suggest on using something else to make the job easier.

Hardik... :)

el_supremo

The audio library for the Teensy 3.2, 3.5 and 3.6 has a pinknoise generator object. I haven't tried it but it might be worth looking into. The audio library source is open.

Pete
Don't send me technical questions via Private Message.

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