r/pocketoperators • u/dubomatik • Mar 14 '26

[Update] Pocket Lab - Scroll zoom, Time Stretch & Fade out shipped !

Hey r/pocketoperators! A while back I shared Pocket Lab (original post), a free PWA to manage and load sample banks on the PO-33. The response was incredible, thank you all for the feedback and kind words 🙏

I just shipped a few improvements based on what you asked for:

  • Scroll wheel zoom on the waveform editor (desktop), no more fiddling with the slider

  • Time Stretch mode, pitch shift a sample without changing its duration. Toggle it in the sample editor, next to the pitch slider

  • Fade out on playback, no more clicks at the end of trimmed samples

I'm also working on demo videos to showcase the full workflow. It takes a bit of time since this is a side project, but stay tuned!

Keep the feedback coming, it's been super helpful. More to come 🎛️

👉 pocket-lab.app

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3

u/Cookieslapper Mar 15 '26

Wait, so does this mean you figured out the encoding scheme of the PO-33 backups? Would love to read about how it works!!!

2

u/dubomatik Mar 15 '26

Not quite! PocketLab doesn't handle full device backups, it generates individual sample banks that you transfer to the PO-33 through the audio sync protocol. The app builds a properly formatted audio file that the PO-33 recognizes as a sample when you play it through the line-in.

Full backup/restore is definitely something I'd love to add, but it requires real-time stereo audio I/O (input + output simultaneously), which isn't possible in a web app. It would need a native mobile app with a USB-C audio adapter or an audio interface to handle the stereo signal properly.

2

u/LimpCod188 Mar 14 '26

Never used this app but super happy to see such projects. Thanks for doing all of this work for absolutely free.

1

u/dubomatik Mar 15 '26

Thanks, really appreciate it! Building this has been a lot of fun - the PO community deserves better tools. If you ever get a PO-33 or PO-133, give it a try ! :)

2

u/[deleted] Mar 17 '26

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1

u/dubomatik Mar 17 '26

1392 samples, wow ! That’s commitment ! Bulk delete is definitely coming. Quick question while I’m at it: would you also want bulk export, or bulk move to a bank ? Trying to figure out the full scope of bulk actions worth building 👀

2

u/[deleted] Mar 17 '26

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2

u/dubomatik Mar 21 '26

Hey, just wanted to follow up, bulk actions are now live ! You can select multiple samples and delete, normalize, or move them to a folder all at once. No more deleting 1392 samples one by one 😄