I need the patch to be openable by MobMuPlat.
Just to give you info about what i want: I have a "sampler" atm. You can record sounds that are stored in the file "sonido.wav". Then you can play them back changing speed, sample size and adding effects.
I want to be able to trigger that sound by midi but in diferent pitch for every key.

Some guy told me about using libraries but i dont know how to install them and im not sure that it will work on MobMuPlat.

Thanks a lot!

This might get you close:

I've used this to transpose samples lately and it sounds correct enough for my liking

Thanks @LarsXI.
I understand the left part. You get the midinote from a midi controller and then you transform that midinote into a frequency.

Just to be sure, when i press the bang the sample gets played. The number in the left is the samplesize.
Where do you get the "length" of the sample. And what is the function of "samplerate~" and where should i hook it?

Hey, i got this example working (3.7.1.1). The audio gets distorted but that's not the main problem. Using that example, i can't control the pitch by midi (The values in the left number are strange. "normal" pitch is at 170"). I want to be able to use a midi keyboard to play every note.

oh shoot! okay. I use a vline~ to feed tabread4~ so the method is a little different

The mtof part is designed to calculate a ratio - so if you input a zero into the left part, the result is one. If you input something like -5, it will give you a value that is less than one. You can multiply that value by the length of the sample in ms to get how long the sample would play back if you wanted it to play at 5 semitones above(?) the base pitch of the sample. You have to choose a midi note to start at. Above that note, the sample will play faster, below that note the sample will play slower. I think I calculate this value by taking the base note and subtracting from that the note from the midi keyboard.

You want to use the tabread4~ method from the (3.7.1.1.) example, but instead of feeding it with a phasor~, try feeding it with a vline~. Then you can calculate the length in samples of your sample. That's the left output of soundfiler. Dividing length in samples by the samplerate~ gives you the lenght of the sample in seconds. Multiply that by 1000 and you have the the length in milliseconds. vline~ takes input in milliseconds. Send it a message to ramp from 0 to the number of samples in your sample in the number of milliseconds you just calculated. If you want to repitch it, also multiply by the midi ratio from above.

If you want to use phasor~ instead, you're setting frequency in Hz. So instead of multiplying the sample length by 1000, you might want to multiply it by the ratio and then get the reciprocal of it with this:

Then feed that to the phasor~

Are you going to use phasor~ in your design? I could double check that there's not a better transposing method with phasor.

Actually, it might be way easier with phasor, You could convert your current input to phasor to midi with ftom, then add transposition in semitones and then convert back to a frequency...

@Gammerjoaq I don't know how far down the road you are, but if you scale your midi range to the "forwards" message value sent to the hslider "speed" in this patch it will play...... Maybe.pd
You are probably all the way there with @LarsXI 's help anyway.
David.

@LarsXI Im kind of confused. I dont understand the mtof part. I know that by using phasor~ i can get the sample to play in a diferent pitch. Im not sure how to use te mtof to sent the phasor~ a signal.
I can give you a the pd patch if you want but be aware that it is a mess. I'ts really all over the place.
droidparty_main2.pd

@whale-av That patch has some cool things but i need only the pitch to change, not pitch and speed. Also for some reason i hear only one side.

Thanks a lot, and sorry for the crappy english.

It's not crappy!

This has the phasor method patched up and I put the one I use for one-shots on the right too. samplepitch.pd

The mtof / from stuff and also converting frequencies around with the reciprocals always takes a couple tries for me because I don't understand totally how the conversions are working. I think it comes down to the midi scale being a linear scale that represents an exponential change. Converting back and forth to time on top of that is needed for sampling

Thanks a lot! I got the left one working in my sample/looper thing but i cant figure where to use it when i only want to play 1 sound.
I don't want to annoy you more than i have done so don't worry a lot about this.

it's no trouble! what do you mean by one sound? like to play the sound through one time without looping?

When loading different samples, it's necessary to do the calculations for the new length of the samples again. That's everything downstream of loadbang. And the 69.03 value will change with samples of lengths other than 100.

I want to play the same sample but just one time when i press a midi key. The sample i need to use can be recorded atm so i'll need to do the calculations every time i record a sample.

@Gammerjoaq Sorry about the last post...... I should have read the thread.
This is a different way of doing it..... pitchshift-mod.pd
It's a hack of one of the Pd "doc" examples, and so there could be some redundant stuff for your purposes..... but not much.
The value to subtract from the incoming midi note I have set to 58 for testing, and that could easily be the incorrect value for your sample........ assuming you will always know the pitch of the sample........
David.

@whale-av Hmmm. Checked that example and im not sure where to stick the sample, or where should i connect that.
Also i figured that midi might not be the best option (im short in time). Im thinking in a touchscreen "piano" (bangs) that send each one a different transposition depending on the sample.