gabeNC
Great sites, I will make an in-depth study of the patent's pdf.
flat5
I'm surely going to use this site and the "technique" even if just for testing purposes, thanks very much!
marcbarker
I appreciate, but could you do a quick explanation of what it does?
Well for my studies I did some learning on inductance and eletromagnetism but nothing really appliable to what I'm intending to do.
I've found out that the frequency of the notes on a guitar (based on the 440Hz produced by the 5th string) goes from 329.63 Hz (E string) to 5273.16 Hz (24th fret on e string), with a total of 49 notes.
2^0 = 1
2^1 = 2
2^2 = 4
2^3 = 8
2^4 = 16
2^5 = 32
2^6 = 64 <----- 32 < 49 < 64
So, it's required a 6 bits output from the ADC.
Now I'm focused on trying to make a pickup, with independent coils, each one only "listening" to the possible frequencies of it's respective string. So the coil of the E (6th) string will ignore anything under 320Hz and above 1330Hz (considering a 24 fret guitar). Here's where I think the PLL will be usefull.
It passes the frequency ahead to the ADC, wich reconizes it and outputs it's bitcode to the MIDI converter. Then, the last thing to do is send the midi signal through an USB connection.
One thing has been bothering me: the device must have 6 circuits, one for each coil, to recognize the notes? I want it to pass sustaining info to the MIDI encoder and I don't know if it would get mixed with other data...
I'm really considering having electronics classes to stop bothering you guys