Hey Pure Data forums

I am having some problems building a pitch shifter. I am all new to music computing in general, so I hope what I am try'ing to explain make sense. My problem is somewhat also related to the other music computing program Max/MSP, so I hope anyone knows a little about that too.

I have attached a picture of the begining setup of a pitch shifter using Max/MSP. It is the outcome of the Max/MSP setup I am try'ing to recreate using pure data.

My question is about the tapin and tapout objects.

The [tapin] and [tapout] objects, have I come to the understand creates a delay, and that effect using pure data can be copyed using delwrite and delread.

[delread~] after [delwrite~] = [tapout]

[delwrite~] after [delread~] = [tapin]

I just can't seem to make it work at all. I believe I am connecting the objects wrong or something like that.

I hope someone is able to give me a hint to how this is done.

http://www.pdpatchrepo.info/hurleur/picture_of_pitchshifter.jpg

i think for a start you want to substitute [delread~] with [vd~] in PD.

[vd~] is a variable delay with interpolation

So that means;

[vd~] after [delwrite~] = [tapout]

[delwrite~] after [vd~] = [tapin]

am I getting it right?

[vd~] after [delwrite~] = [tapout]

i think this should clarify things for you!

thx mate, I believe you just gave me what I was looking for

Here's a tutorial for building a pitch shifter in max

and attached you'll find the Pd implementation I've made. Positive numbers drop the frequency while negative raise it.
Cheers

http://www.pdpatchrepo.info/hurleur/pitch_shift.pd

Just to clarify, it's not the order of the delay objects that determines how the correspond to [tapin]/[tapout].

[delwrite~] = [tapin]

[vd~] = [tapout]

Instead of being connected by a cable, they just have the same names, like [send]/[receive] pairs. But the order doesn't matter. Each object has it's own function, regardless of order.