Timestretching/Pitchshifting

[johnmike]

@Christoph-Hart and here's a vid with the kicks moved to a different sampler...numQ's at 0,4,8 just playing around with it...but as you can see they slowly drift out of time with the click...

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[johnmike]

sorry for terrible audio it's coming from the built in mic...but should be loud enough to hear what's going on

[BWSounds]

The Timestretching/Pitchshifting is nice, but causes a cpu spike on my set up... is this happening to anyone else?

Only asking so I can know how to proceed with the project im working on.
thx

[Sawer]

@BWSounds Same here... Cpu spikes to 60% sometimes. Only tried on FL studio tho. Have not tried on mac yet.

[Christoph Hart]

@Sawer if you're using the SkipLatency parameter then yes, there will be spikes when you start voices, otherwise the CPU usage is high but not unreasonably high.

[Lumi283]

Hi! I have a problem with the timestretching. I have updated my HISE version(3.6.0) but the functions Sampler.getTimestretchOptions();
Sampler0.setTimestretchOptions(obj);
Sampler0.setTimestretchRatio(0.7);
are throwing this error message:
Interface:! Ui_samples.js (13): function not found {SW50ZXJmYWNlfFVpX3NhbXBsZXMuanN8NDM2fDEzfDQ3}
Could someone help me to solve this problem? Thank you

// Get sampler
var Sampler0 = Synth.getChildSynth("Sampler0");

// fetch the current state
var obj = Sampler0.getTimestretchOptions();

// print out all properties
Console.print(trace(obj));

// Apply your changed
obj.SkipLatency = true;
obj.Tonality = 2.0;

// Update the options
Sampler0.setTimestretchOptions(obj);

//Set ratio
Sampler0.setTimestretchRatio(0.7);

[d.healey]

@Lumi283 The time stretch functions are part of the Sampler class, your reference is of the ChildSynth type. You either need to use Synth.getSampler() instead or use Sampler0.asSampler...

[Lumi283]

@d-healey Thank you it's working!
Now when i want to channge the tonality nothing happens.... But the tonality was changed in the JSON.
Interface: {

//Script
var SamplerX = Synth.getSampler("Sampler0");
var obj = SamplerX.getTimestretchOptions();

obj.SkipLatency = false;
obj.Tonality = 6.0;

SamplerX.setTimestretchOptions(obj);

Console.print(trace(obj));

//Console
Interface: {
  "Tonality": 6.0,
  "SkipLatency": 0,
  "Mode": "VoiceStart",
  "NumQuarters": 0.0,
  "PreferredEngine": ""
}

Any idea ?

[Christoph Hart]

@Lumi283 tonality is between 0 and 1.

[Lumi283]

@Christoph-Hart
Okay, I understand, and what values correspond to semitones?

[johnmike]

@Christoph-Hart any luck with time stretching across multiple samplers? or is it something im doing wrong?

[Christoph Hart]

@johnmike I‘m on vacation at the moment so I can‘t check stuff with actual audio but I‘ll take a look when I get back.

[d.healey]

@Lumi283 Try dividing 1 by 12 (if it's linear, I haven't tested it).

[ulrik]

@Christoph-Hart said in Timestretching/Pitchshifting:

@johnmike I‘m on vacation at the moment

What, do you also take time off sometimes, how will we manage?

[johnmike]

@Christoph-Hart definitely enjoy your vacay! I can wait lol...was just wondering...sorry to bother! thanks for all you do!

[d.healey]

@johnmike I just tested and it seems to work fine (I notice that if I set the tempo too high it loops back to a slower tempo which is weird, but that could be a Linux thing).

Here's a video I made
https://e.pcloud.link/publink/show?code=XZlUk2ZWBrmKoz56wb9iQHR1DbWaFkrDBYk

Here's the audio file I'm using in the video
https://e.pcloud.link/publink/show?code=XZtUk2ZePJ9aI3hKympkKub2n0EU8IESwA7

I left numQuarters at 0

[johnmike]

@d-healey seems like you are using the same loop in both samplers correct? I was looking on my phone so everything was small…are the on the same key as well? What about on different keys with different loops that are different lengths/different BPMs? That’s my situation

[d.healey]

@johnmike I didn't try that. I'll give it a go now

[d.healey]

@johnmike Still appears to work

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Here's the second file: https://e.pcloud.link/publink/show?code=XZxGk2ZLwkpbCMFaJmA0LLPL0NOQF8KSH1y

In the video the file on the left (sampler 1) is 120BPM, the one on the right is 100BPM. Also note that the BPM values I set in the settings panel are out by 10BPM (this is a bug on Linux, so 90BPM in the settings panel is actually 100BPM).

I mapped the samples to different keys in different samples. NumQuarters still set to 0.

At 100BPM the sample on the right plays back at normal speed and the one on the left is slowed. When I set the tempo to 120BPM the one on the left plays at normal speed and the one on the right is sped up.

[johnmike]

@d-healey interesting…maybe it’s a Mac bug…I will try again once I get home this evening to see…maybe I need a fresh session…maybe some code or something in my session is messing with it(I don’t see how but maybe…)i did replicate an older session to copy over some code I wanted to use in this project…I’ll start from scratch and see what I come up with