Hello Every One,
I have noise signal from amplifier at frequency 400 Hz. Now i want to make 1/f spectrum from it with corner frequency at 100 Hz.
Can any body give me an idea or source how i can do this?
Looking forward for your reply.
Best Regards
Awais
Hi Awais. Not sure you got my reply to your question but I had a further think on this matter and since you want 1 1/f spectrum you need a filter that rolls off at -10 dB/decade, which is must less than a standard first order filter with Roll-off of -20 dB.decade. You could investigate a fractional order filter. For example if you simulate the ABM circuit in the attached PDF, it shows a Roll-off of -10 dB/decade when the order is 0.5. There are many papers for doing this in either the digital or analogue domain. Hope this helps. If you need any material on fractional order maths I can send you some of my notes.
Regards
Paul
I suggest you to view this site :
http://empslocal.ex.ac.uk/people/staff/mrwatkin/zeta/1fnoisesigprocNT.htm
and
to view or buy this book
PLANAT, Michel. Noise, Oscillators and Algebraic Randomness: From Noise in Communication Systems to Number Theory. Springer, 2008.
You can contact the author :
https://www.researchgate.net/profile/Michel_Planat
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