Device Details

Device Overview

Name/Version: Spectral Stretch 1.0
Author: jfcharles  
Description: Spectral Stretch excels at live audio time stretching, especially with very low playback speed. Controls include Stretch Factor from 1 to 1000, Blur, Denoise (spectral gate), Freeze and Reverse options, Dry/Wet Mix, and more. You can set the duration of the recorded sample from 1 to 60 seconds.

Use it as a faux, but live, Paulstretch.


Optimized for Max for Live, tested at all sampling rates, low CPU load. Parameters are available for automation and MIDI mapping.

Open source license: GNU GPL v3.0-or-later

Device Details

Tags effect
Live Version Used: 10.1
Max Version Used: 8.1
Date Added: Jul 31 2020 13:39:47
Date Last Updated: Jul 31 2020 13:40:56
Device Type: audio_device
Download URL (report link)
License (more info): Commercial


This sounds seriously great, man...

yeah, this is superb!

Seems, and sounds very interesting. Question to the developper or the ones who bought it: Is the audio or sample loaded in the buffer saved in the Live session and recalled when reopening it?

Also, to the developper: (sorry for the double questions, I forgot to insert in my first one). Could a pitch be added? I feel it's probably the only thing missing to this great stretcher :)

Thanks for your comments and interest.
The sample is not saved in the Live session and not recalled when re-opening it.
For sure some pitch shifting could be added, if you have some experience with Max, and don't mind the additional CPU load. For this device, I decided to keep the design focused on time stretching, though, "? la paulstretch". So the device does not include pitch shifting or other effects: if you need further processing, you will use another device downstream.
I hope that helps.

for the curious; the key to pitchshifting this is in the long-stretch.pfft inside the device. 3rd outlet of the [fftin~ 3 nofft] holds the playback bins, and if you, say, multiply those by 2, the pitch is one octave up, etc . So adding a fourth inlet to control this is a good option.

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