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Un4seen Developments Forum > Developments > XMPlay > Topic: WAV recording always skipping
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Author Topic: WAV recording always skipping  (Read 4768 times)
velusip
Posts: 37
« on: 7 Jul '03 - 07:28 »
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Whenever I use XMPlay to convert certain formats to WAV, I get glitches and 'skips' in the WAV file.

I find the WAV recording feature to be really useful, but does not seem to work with any encoded formats [ mp3, mpc, ogg ] without 'skipping'.

It seems to work perfectly with XM's, on the other hand *wink*.

Computer is apt for doing this: p3666MHz, 512MBRAM@133MHz
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Ian @ un4seen
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Posts: 15259
« Reply #1 on: 7 Jul '03 - 11:59 »
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hmm... that's strange. I see no logical reason for that to happen, as the decoded sample data from all formats goes via the same "route". Does the problem happen with both the "WAV Writer" and "WAV Writer - normalize" device options, and with all of 8/16/24/32-bit?

Also, how are you checking the WAV files? Can you see the glitches/skips in a waveform view of a sample editor?
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terryw
Posts: 13
« Reply #2 on: 8 Jul '03 - 07:42 »
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I have a similar problem.  I'm trying to convert .wma files using WAV writer.  I'm running on a 1.4g machine, 500 mb memory, no other apps running.  I have ramping, surround sound and auto amp reduction turned off.  I've tried both spline and linear interpolation, and glitches occur with both, although they seem more noticeable with spline.  I've also tried the WAV writer normalized, with similar results.  I've played the .wma file with XM player and don't hear any glitches.  Repeated tries do not produce glitches in the same place, but there always are some in some songs.  I can see the errors with Goldwave, and it looks like a small section is lost.  To my ear they sound like little clicks, not really a missing section of music.  I'm using headphones to hear these; I'm not sure they'd be noticeable over speakers.

I don't detect the problem with every file, but some always seem to produce errors.  If someone can give me detailed instructions on uploading, I'll be glad to do so.  The file is about 6 mb.
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terryw
Posts: 13
« Reply #3 on: 8 Jul '03 - 07:43 »
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Oh, I'm writing 16 bit.
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Irrational86
Posts: 960
« Reply #4 on: 8 Jul '03 - 08:07 »
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To upload to http://ftp://ftp.un4seen.com/incoming/ <--- Simply click that link and Copy and Paste from explorer to the window that will open after clicking on that link..
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terryw
Posts: 13
« Reply #5 on: 8 Jul '03 - 20:40 »
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Thanks.  Much easier than I thought.  The .wma file "13 Dance With You" is uploaded.
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Ian @ un4seen
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Posts: 15259
« Reply #6 on: 8 Jul '03 - 22:02 »
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Unfortunately, I'm unable to play that WMA file because it is protected... if you ripped the track from a CD, can you re-rip it with the "Personal Rights Management" option disabled?

Check that you still get the problems with the new file before uploading Smiley
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velusip
Posts: 37
« Reply #7 on: 9 Jul '03 - 06:03 »
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I do not have any of the files with the problem- I deleted them in frustration before I thought to send in a 'sample'? :laugh:
I had made a lot before I realised what happened...

I was using 16-bit, WAV recording, not normalized. I will play around with settings to see if it happens again.

Just a quick question while we are here... I set XMPlay to 96000Hz and 32-bit to listen on the home entertainment system, but I doubt that my soundcard [ cheap SB Live Plat ] can handle that. Is this a bug? I recall in the past it would reset itself to a more reasonable lvl, but always go too low of settings I might ad ;þ
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Ian @ un4seen
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Posts: 15259
« Reply #8 on: 9 Jul '03 - 12:01 »
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Just a quick question while we are here... I set XMPlay to 96000Hz and 32-bit to listen on the home entertainment system, but I doubt that my soundcard [ cheap SB Live Plat ] can handle that. Is this a bug?

On modern Windows (with WDM drivers), Windows will automatically resample it to what your soundcard supports - you won't hear any benefit from using a sample rate or resolution higher than what your soundcard supports, so you may as well set the output to what your card does support to save a bit of processing Smiley ... in your case, that's 48000hz 16-bit.
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Irrational86
Posts: 960
« Reply #9 on: 9 Jul '03 - 17:41 »
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How do you find out the max frequency and resolution bits a sound card supports?
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Ralesk
Posts: 654
« Reply #10 on: 10 Jul '03 - 01:08 »
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if you own a boxed one, RTFM Grin if you don't, RTFOM (online manual, if there is Tongue)
« Last Edit: 10 Jul '03 - 01:08 by Ralesk » Logged
Ian @ un4seen
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Posts: 15259
« Reply #11 on: 10 Jul '03 - 16:37 »
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Yep, that's probably pretty much the only 100% reliable way (if you can trust the manufacturer Grin) ... It is possible to query what the drivers support, but that's not necessarily what the card itself outputs - the card or drivers may resample too.
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Irrational86
Posts: 960
« Reply #12 on: 10 Jul '03 - 17:51 »
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:laugh: :laugh: :laugh: hehe, thanks for the answers Wink
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