Pink Noise Generator for Audio Testing


Posted on Oct 8, 2012

White noise (the sound you hear when a TV is tuned to a non-existent station) has a frequency characteristic which raises the power level by 3dB with each increasing octave, and is not suitable for response testing (and will probably blow your tweeters as well). By combining a 3dB / octave filter and a white noise source, we can get a very good approximation to `perfect` pink noise, where the power in the octave (for example) 40 to 80Hz is exactly the same as in the octave 10kHz to 20kHz.


Pink Noise Generator for Audio Testing
Click here to download the full size of the above Circuit.




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