Support and General Use > Recording

Wav files suddenly gone silent?

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jhMikeS:
 ???  :o

Would love to have a copy of a file that exhibited this behavior and examine the header and verify it and the data itself. Would need the whole thing to check that exactly as many bytes are there as the header says there should be amongst other things.

gsh:
Here are links to one of the smaller test recordings - as it's over 100mb he used winrar to split it into 2 files of 100mb + 50mb (no compression, archive only)
http://rapidshare.com/files/7602730/rec_0005.part1.rar.html
http://rapidshare.com/files/7590701/rec_0005.part2.rar.html

Thanks - this is very strange!

jhMikeS:
On first inspection it doesn't even look like audio data but duration and such look good. It starts off with a bunch of samples of value 2 and 3 and then I see only 0 and -1 after that for the most part so it looks pretty silent. I normalized the recording and can indeed hear faint audio in the noise. About every 2:50 there is a little spike in the levels...probably low-level noise from a disk flush. Almost looks like a wrong input selected.

If the peakmeters were active and showing good levels during the recording, the data was coming in for sure and it sounds like the data is there with extreme attenuation. If any part of this could ever be played on the device and listened to with normal audible level, recording couldn't be at fault since it's no longer active after it is stopped.

Like petur said, it's a rather odd notion that the headers would be ok (it is) and only the samples attenuated much less by a file copy. I've copied files over 2h off my player without incident.

Attached is a sample of what I got out of it after much processing. (Rename extension to "mp3")

[attachment deleted by admin]

gsh:
Thanks for investigating. I figured it was a longshot that they could be recovered.

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