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How to Clean up Cassette to Digital, Need Help
post May 3 2003, 00:27
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Thanks in Advance for any help one of you might offer.

I am far from an Audio Pro, yet have been trying to take some old cassette tapes and restore the sound quality they originally had, and enhance it even. As for this file in particular it seems to have lost its high's and mids. When I run it through a simple EQ plugin I just dont get the clarity I need, it just sounds worse.

Here is the steps I took in recording this tape.

#1 - Used a brand new Sony Tape deck , with preamp mixer and got the sound quality as close to 0 DB as I could (as reccomended by many audio recording sites I have read). I recorded at 44.1 hz, 16 bit through my SBLIVE card. I saw no loss in quality from tape to digital.

#2 - I then loaded Wavlab and watched the spectrum analyser and saw the highs and some mids were very low. I tried to raise this up in value but it just made the sound even more distorted than it already was.

I have many tapes like this I would like to restore, re-master (or whatever the term is). I have attached this file (in original .wav format) and uploaded it to the alt.binaries.sound.mp3 newsgroup. The topic is called:

"Sound Pro's can you give tips on how to fix this Audio File? Email - Trick@lvcm.com"

You can also download the .wav file clip at - http://www.lvcm.com/trick/badwav/badwav.wav

Any help on cleanup (what software/settings to use), examples , web links on fixing this sorta of stuff is GREATLY appreciated!!!! Heck if someone wants to clean it up themselves and email it back with the steps you used to do it, that would even be better.

This advice would be Pricessless, thanks again in advance to anyone who can help this audio newbie.

Email - trick@lvcm.com



PS - I have read about the CEDAR system, is this hardware based only???
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post Oct 16 2013, 22:01
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There is nothing in the signal path to vary the level between my phono cartridge and the soundcard input. The phono peramp is in receiver, so nothing very unusual. I've been fortunate that this works well. On a very few LPs the maximum input has been just short of 0dBfs but it has never clipped. The more than 700 LPs I transfered have been from many genera but few were Rock and none the more recent heavy noise type productions, so I don't know what those would be like.

I've done cassettes on six or ten different cassette decks, varying from probably not much more than a $100 dubbing deck to a decent quality $450 three head deck. All had the standard arrangement of a tape preamp in the deck. Every tape deck produced a significantly lower output than the average LP from my TT.

I always use a line level preamp in the signal path but since its self noise level records at about -90dBfs, it seems pointless to worry about it mucking up the signal. Its gain is 10dB. The input to its gain stage can be attenuated with the volume control. The last cassette, just last week, seemed to be in very good condition. Its wasn't exactly typical but not extreme either. Its maximum peaks, with the preamp letting through everything, were almost 15dB down. Why should my experience be so different than everyone else's?
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Posts in this topic
- cupelix   How to Clean up Cassette to Digital   May 3 2003, 00:27
- - dreamliner77   JUst a thought If you are recording the wav's...   May 3 2003, 00:41
- - TwoJ   Hi Cupelix PSS - Cedar is a company that does aud...   May 3 2003, 01:49
- - Pio2001   24/96 soundcards should bring nothing for recordin...   May 3 2003, 02:17
- - cupelix   Thanks for the helpfuls replies guys. In response ...   May 3 2003, 02:49
- - TwoJ   Sorry Pio2001 - I didn't mean to imply that sw...   May 3 2003, 03:18
- - woody_woodward   This topic is fascinating to me. I've done se...   May 3 2003, 06:19
- - Andavari   I'm interested in what the results would and w...   May 3 2003, 06:48
- - JeanLuc   QUOTE (Pio2001 @ May 3 2003 - 01:17 AM)1-I sh...   May 3 2003, 09:37
- - Pio2001   QUOTE (cupelix @ May 3 2003 - 04:49 AM)As far...   May 3 2003, 14:39
- - cupelix   I dont know if any of you bothered to download the...   May 4 2003, 00:36
- - woody_woodward   I tried downloading the WAV from your original pos...   May 6 2003, 19:15
- - Xenion   Nakamichi Tapedeck + Nakamichi High Comp II => ...   May 6 2003, 19:21
- - Mac   I want to have a go with your file, but I also rec...   May 6 2003, 22:09
- - _Shorty   usually when it doesn't state which type of Do...   May 7 2003, 02:56
- - DickD   First, I'd agree that you should leave some he...   May 7 2003, 13:25
- - JeanLuc   QUOTE (Pio2001 @ May 3 2003 - 01:39 PM)An MA-...   May 7 2003, 14:43
- - 2Bdecided   I think the same name has been applied to differen...   May 7 2003, 17:19
|- - knutinh   QUOTE (2Bdecided @ May 7 2003, 17:19) IIR...   Oct 17 2013, 07:56
|- - 2Bdecided   QUOTE (knutinh @ Oct 17 2013, 07:56) QUOT...   Oct 17 2013, 12:47
- - gleib   QUOTE (Pio2001 @ May 3 2003 - 05:39 AM)QUOTE ...   May 7 2003, 18:48
- - raynault   I do A LOT of Tapes, mine are all voice. First u...   Oct 16 2013, 05:26
|- - pdq   QUOTE (raynault @ Oct 16 2013, 00:26) Fir...   Oct 16 2013, 13:33
- - 2Bdecided   As neither tapes decks nor soundcards universally ...   Oct 16 2013, 14:20
- - AndyH-ha   There is nothing in the signal path to vary the le...   Oct 16 2013, 22:01
- - raynault   Usually the "pre amp" in the tape player...   Oct 24 2013, 17:40
- - 2Bdecided   QUOTE (raynault @ Oct 24 2013, 17:40) Dav...   Oct 25 2013, 09:54

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