Is there an average easy Pitch Phifter project?

[deadsnake]

I'm planning on making one of these. I like the sound of those harmonic licks you can do with them.

[The Tone God]

Unless you want slight vibrato or full octave(s) up or down then no. True intelligent pitch shifting is not really in the average DIYer's domain.

Andrew

[deadsnake]

I was expecting an aswer like this though......... Since those things just by looking at them look really complicaded. I'm going to take a look on the DSP forum I might find something there.

[Jaicen_solo]

Check out the simple harmoniser on Mark Hammer's page. It uses a PLL to track the notes, and generates a square (up or down) wave tone according to the frequency it detects. I imagine it sounds a lot like Tim's PWM or the crash sync, though I haven't got round to building it. I think this is as close as you're gonna get to a simple DIY pitchsifter.

[deadsnake]

Thanks I'm going to take a look there.

[lovric]

i've found a EMM Harmony generator (octaves, 5ths  & 3rds). If you haven't found it yet pm me.

[Jaicen_solo]

Yeah that's the one i'm talking about. Looks pretty interesting.

[Mark Hammer]

The E&MM Harmony Generator is not really a picth shifter.  Rather, it is more like a more complicated octave divider.  Much like an octave divider, it attempts to track the notes you are playing, and divides them by integers (divide by 2, 3, 5, etc), rather than adjusting them by pitch intervals.   Where a true pitch shifter simply shifts ALL content, regardless of how many notes are being played, an octave divider (and this circuit) is stuck with one note at a time.  Because it is a divider rather than shifter, as well, NONE of the tonal qualities of the input note are preserved.  The dividing circuit always puts out a square wave, and its tone depends on whetever filtering follows.  With a true pitch shifter/harmonizer, a dull note shifted up by an octave will still sound dull...just higher, and a crisp note shifted down an octave will still sound crisp, just lower.

Within those limitations, however, if you're fine with one note at a time, don't mind the shifting limitations (a limited range of intervals to choose from), and don't need the synthesized note to sound just like the original, this unit can work well.  Indeed, if you were thinking you might like an octave divider, this circuit will accomplish that, and a little more for not much more effort than you might expend on an octave divider.

[lovric]

I'm up for the rebellion but I'll settle for a lie... (B.O.C)

The accompanying text of the EMM from your site Mark clearly states what it is capable of. But still I promote it in my mind all the time. I really understand anyone who would call an octaver a pitch shifter. Especially those who know the difference but still yield to wishful thinking. Just look at the title: "average easy pitch shifter"! Is it an oxymoron? Like "military inteligence". There is an emotional factor in it.

But, I read this topic since I would like to incorporate some kind of interval generator into the loop of delay pedal. I imagine that seconds, 4ths and 5ths would be interesting since one couldn't hope for real harmony in this case. Minor thirds for baroque fans and flat five for blues.

This would be a primitive arpegiator. The other probable faux arpegiator would be a phaser with step LFO that someone tried after a suggestion from www.geofex.com/Article_Folders/LFOs/psuedorandom.htm#Regular%20Stair%20Step%20LFO

Average easy. Anything but.