Timestretching/Pitchshifting

Christoph Hart

Have you supplied a valid NumQuarters property to each sampler?

johnmike

@Christoph-Hart I've tried them at different values...same results...ive changed all of the numquaters to 0 ive tried 2,4,8 etc etc...if all the samples are in the same sampler and the numquarters are set to 0 everything plays and syncs fine...but when I mix multiple samplers it falls apart...working on a video now

johnmike

@Christoph-Hart here's a vid with time stretching the loops all in 1 sampler...numquarters at 0
https://www.dropbox.com/scl/fi/55825x1sgxeqm743uvjqm/Timestrectching-1.mov?rlkey=gucjhshwrifahs630dda12zmv&dl=0

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...

https://www.dropbox.com/scl/fi/8ximq0ziy4sjo38l974om/timestretch-2.mov?rlkey=4vkpcp7vzmqrqubuvfzflm7uw&dl=0

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

Timestretching/Pitchshifting

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