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hiccups during audio playbacks

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hiccups during audio playbacks

Postby Wakenaam on Sun Apr 30, 2006 11:27 am

I am using Audacity to convert audio cassette music to CD's. The playbacks are clear but produce frequent hiccups. I have adjusted the input levels so there is no clipping. Are there any pointers someone can tell me about to improve my playbacks? Thanks for any help.
Wakenaam
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Postby Justin42 on Sun Apr 30, 2006 5:20 pm

Can you describe the hiccups any more? Does it sound like clipping? Are you sure you're plugged into the audio card's line in, and not mic in?

Is your hard drive defragmented when you are recording? Do you close all other open programs?

Do you hear these when you play back as WAV files in Audacity, or only when you play back the CD? (if you only hear it on the CD, try burning with different media, burning slower, or playing back on a different CD player)
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Postby Wakenaam on Mon May 01, 2006 10:27 am

Justin42: Thanks for your response. The hiccups occur right after recording in Audacity during a test playback, before conversion to any other format. I am using a PCI Creative SoundBlaster card. I am using the line input, defragged, and closed all other programs. I'm not sure if I am getting clipping as I have my Audacity input volume level to 0.1 and also in Windows my input line recording volume is minimum, yet I see flattened waveforms when recording. Not sure where to go from here...
Wakenaam
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Postby Justin42 on Mon May 01, 2006 6:36 pm

Maybe try moving the Soundblaster card to a different PCI slot inside your computer, if you have any free (or shuffle a couple cards around). It sounds like you might be having some conflicts with another device, and Soundblaster cards are notorious for causing issues.

Are you using the latest drivers available?

I'm surprised you're seeing clipping with levels that low-- are you plugged into a portable cassette player's headphone jack by any chance? Be sure that's set at a low level. Try doing a test recording turning the volume on the cassette up and down, and changing the SoundBlaster line input up and down, and see if you can see a different wave pattern in Audacity after the recording. (i.e., be sure it's responding)

Also, sometimes you have "2" recording level settings-- a master recording level, and then a level for each individual item. Be sure ALL OTHER inputs are set to "mute" (however you do that with your card, I haven't had a Soundblaster in years so I'm not sure what to tell you) before you try to record. And be sure the master recording and line-in recording and set around the middle somewhere as a baseline. If you have to turn them all the way down (I'm not sure if by ".1" you mean the very, very bottom, or at ".1db" which would be VERY loud -- if you're setting by dB, set it around -3.0 or -6.0) and you're still maxing out the input, something is wrong.
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