If the looping that you did in Hokusai wrote out a WAV file with the loop points embedded in the metadata, there is a known subtle issue with the way TJ treats the loop end point. Kind of a long story, but I recently discovered that the software I use to create the instrument samples (keymap pro) actually write out the loop end point one sample earlier than the desired, due to ambiguities of the specification (that half of all software tends to get correct). Thumbjam thus interprets it the "nonstandard" way, as an unintended consequence.

So, if right before you export the sample in your editor you set the end loop point one sample later, then TJ should get it right. Please post your edited sample here or email it me at support@thumbjam.com, just in case.

Thanks for the off-forum file email. Since you had a full-sample loop, my comments above are irrelevant (but maybe not to some future issue someone has). However, I figured out the problem... apparently when you make any changes in the Edit Sample page, it decides to set a crossfade amount for the sample when it is looping, and the implementation for the built-in loop crossfading is broken, which causes the clicks. When you first add the sample and turn the loop on, the xfade parameter remains at 0, and it loops the full sample correctly... after changing any other value on that page, it won't. You can't edit this parameter in the app, it has to be done in the instrument metadata after exporting.

The workaround is annoying, but possible. Once you get it where you want it in terms of everything else, you need to export your new instrument to your computer to make a minor edit in a text editor. Wifi transfer, in the recorded instruments section further down the left column, you click Archive, then you can Download it. Unpack the zip file on your computer and edit the new.flot file with a text editor. Look for the xfade_samples="2048" (or similar value) parameter inside a element and change the value to "0". Then re-zip the contents of the folder up, and upload it as an instrument in wifi-transfer, which should overwrite the existing one.

Hi Jesse, I'm new to the forum. Do you plan on correcting this issue in a future version so that we won't have to do the workaround?

Also, could you recommend a good audio editing tool on the iPad for adjusting and setting loop points?

Thanks so much in Advance!!!

--Sean

Hi, I am BUMPing this thread in hopes that I can get a response.

I have researched and researched everything, and I have come to the conclusion that Thumbjam is the best sampler currently available on the iPad. I would like to be able to do my softlooping and such in an editor that is built into the iPad (like is mentioned above.) However, I would rather not have the hassle of working around the bug that you mentioned. Is there any plan to fix this quirk? Also, Is there a recommended audio editor that would be useful for creating audio loops?

Thanks again! :-)

I hope you see this message this time. :-)

--Sean Ercanbrack (ThumbJam owner and user)

Certainly, I'll fix the issue for the next release... it's just that I can't promise when that will be.

As for another iPad app to do loop editing on audio files..... I haven't come across one myself, but I haven't done enough research. Ideally, you'd be able to do what you need in TJ itself, but of course that hasn't been implemented yet either.

Hey Jesse,

Did the crossfading ever get fixed? I was experimenting with a sample last night and couldn't make the clicks go away.

Do you have any soon-coming updates for the sampling side of thumbjam? The iPad SORELY needs a functional sampler with good sampling capabilities.

Any chance of adding an option that allows us to cycle through various zero point loop crossings to more easily find good loops?

Thanks!

--Sean

Ugh, it appears that this fix fell off my radar last year. Putting it back on the list, sorry!

Thank you! Please make it a very high priority, because this is really, really essential to creating new material!

Any possibilities of having the ability of a simple "Snap to 0 crossings" option that allows the user to cycle through the zero crossings in the audio to get the best sound looping possible?

Most importantly though, PLEASE fix the crossfading bug! :-)

--Sean