Rockbox Technical Forums

Support and General Use => Recording => Topic started by: Cedrik0s on January 13, 2012, 06:22:02 AM

Title: Sansa Clip+ : Recording glitches
Post by: Cedrik0s on January 13, 2012, 06:22:02 AM
Hi there.

I am a first timer here, and I'd first like to congratulate the Rockbox team for their work.

With its original firmware, my Clip+ can record. The quality is arguable, but there are no glitches.

With Rockbox version 3.10 (installed yesterday) (which I found to be the latest release if I am correct), I cannot get any recordings without glitches.
I tried many samplerates, many formats, but I never get a normal result.

Please find here-attached a screen capture. You can see the waveform has discontinuities. (e.g. with a sine, at some point the waveform jumps from min to max amplitude). Those are causing audio glitches.

What could I be doing wrong?
Or is it a known problem?

Thanks a lot
Title: Re: Sansa Clip+ : Recording glitches
Post by: saratoga on January 13, 2012, 11:43:01 AM
Update to the current build.  This was probably fixed a while back.
Title: Re: Sansa Clip+ : Recording glitches
Post by: Cedrik0s on January 13, 2012, 11:49:53 AM
Thanks for your answer.

I had understood that the Builds were sort of unstable, or incomplete, while Releases were the "shipping" versions.

I suppose you suggest it is common to use the Builds rather than the Releases.

I will try that.

Thanks again.

Post Merge: January 13, 2012, 12:33:12 PM
I just tried the current build and it's fixed!

Really good.


Well done Rockbox!

Regards.
Title: Re: Sansa Clip+ : Recording glitches
Post by: Chronon on January 13, 2012, 09:24:40 PM
The only real difference is that releases get branched and frozen for a little while so bugs can hopefully be worked out.  Still, there's no guarantee that a particular current build will be any buggier than a given release.  Current builds usually work quite well in my experience.
Title: Re: Sansa Clip+ : Recording glitches
Post by: jhMikeS on January 16, 2012, 10:10:56 PM
Yes, these issue were addressed on AMS players that related to interrupt latency.