FS#12633 - Loud “clunk” when the user manually skips back to the start of a WMA file

Attached to Project: Rockbox
Opened by Terry Layton (Terry The Great) - Tuesday, 03 April 2012, 22:22 GMT
Last edited by MichaelGiacomelli (saratoga) - Tuesday, 10 April 2012, 17:24 GMT
Task Type Bugs
Category Music playback
Status Closed
Assigned To No-one
Operating System Sansa Fuze+
Severity Low
Priority Normal
Reported Version Release 3.11
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No


Note: this bug report actually applies to the Sansa Fuze v2 but there is no entry for it in the Flyspray Player Type menu so I used the closest entry.

When the user manually skips back to the start of any WMA file while it is playing there is an annoying clunk (like a microphone being turned off) before the same music track begins again. The original Sansa® Fuze™ firmware does not have this problem.

Hardware device: Sansa® Fuze™ v2
Original manufacturer’s firmware version: 02.03.33
Rockbox version: 3.11 (the current release)
Attachments to this report: 2 WMA song files

Actions taken to isolate the problem(s) to the Rockbox firmware:
The attached WMA file (Stay.wma) was produced on a friend’s Windows 7 machine using Windows Media Player 12 to rip the track from a CD. The metadata was downloaded by Windows Media Player 12 which inserted it into the WMA file. I find that it gives the same results when ripped from the same CD on my machine. I try to avoid non-Microsoft software to rip CDs because this can introduce more problems.

Using any theme, skip back to the start of this track after playing it for several seconds or so (without pausing it first) and you should hear the unwanted noise just before the track restarts. Try this several times. You should get the same results every time.

To prove that this problem is not isolated to this single track (Stay.wma) I ripped another track at random from my CD collection. The name of this track is: 01 If Looks Could Kill.wma but it was too big (5.11 MB) for the tracker to attach to this report. Consequently, I cut it down to a length of 1 minute. This new file is called: 01 If Looks Could Kill [1 minute] and it is the second file attached to this report. You should find that this randomly selected track produces the same problem when the user manually skips back to the start (without pausing the track first) while using any theme to play it.

The point I am making is that the Rockbox firmware should be able to properly play a WMA file ripped from a CD using the facility provided by Microsoft Windows Media Player 12. It actually does that. But there should not be a loud "clunk" when the user manually skips back to the start of that file while playing it using the Rockbox firmware and any theme.
This task depends upon

Closed by  MichaelGiacomelli (saratoga)
Tuesday, 10 April 2012, 17:24 GMT
Reason for closing:  Fixed
Additional comments about closing:  Fixed for me.
Comment by MichaelGiacomelli (saratoga) - Wednesday, 04 April 2012, 00:24 GMT
Should be fixed in bc41926. Confirm and I'll close it.