Apologies for my earlier munged message. alan.b.pearce@stfc.ac.uk wrote: >> > I do not know what is your background in electronics, but for me a >> > book about DSP by Lyons helped me a lot to understand the FFT (Fast >> > Fourier Transform) which is the foundation of SDR. >> > >> >> FFTs give me butterflies :-). >> >> It may well be enough to understand what the FFT DOES rather than >> >> HOW it does it in technical detail. >> >> So understanding what the Fourier Transform (FT - Analog foundation for >> FFT) does may well be enough >> >> AND a sliding correlation of a sine and cos wave across a data / signal = sample >> can easily show how and why. >> The "aha moment" from a simple graph paper or simulation example may be >> enough to demystify the subject adequately to allow greater detail to be >> (more) happily accepted. >> >> It's quite likely that somebody here recalls a paper or demo that does j= ust >> this. It's been 'a few decades' since I played with such 'in anger'. >> Lonnnng ago FFTs on a MC6800 happened. That's something like >> implementing them on a 16F84, but with external memory :-). > > Russell, > There was a discussion here within the last 3 months IIRC where a couple = of > Analog Devices books were mentioned. I found the one I recommended gave m= e an > reasonable insight into the basics of DSP, sorry, can't find my archive o= f the > link at the moment. > > But a DSP book by Lyons was mentioned, so an amazon search reveals three > likely candidates, at varying cost ... > > https://www.amazon.co.uk/Understanding-Digital-Signal-Processing-Richard-= ebook/dp/B004DI7JIQ/ref=3Dpd_sim_351_1?_encoding=3DUTF8&psc=3D1&refRID=3D7J= WZENGWF11ZB0766AKN The professor of my DSP course arranged for his students to obtain free copies _Digital Sigal Processing in VLSI_ (Higgins), which is published by Analog Devices. https://www.abebooks.com/9780132128872/Digital-Signal-Processing-Vlsi-Analo= g-013212887X/plp=20 Thank you, --=20 Don Kuenz KB7RPU Genius is nothing but a greater aptitude for patience. - de Buffon --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .