Differences between version 26 and predecessor to the previous major change of SoundProcessingNotes.
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| Newer page: | version 26 | Last edited on Saturday, February 7, 2004 12:33:51 am | by AristotlePagaltzis | Revert |
| Older page: | version 22 | Last edited on Saturday, December 27, 2003 12:37:14 pm | by DanielLawson | Revert |
@@ -5,8 +5,10 @@
I'll add to this wiki as I go, so excuse the journal-like nature. When I've finished I'll tidy it up, or let a WikiGnome do it for me :)
''Sorry, this is too longwinded and unwieldly a mess for this gnome to clean up, despite following along with great interest. :)'' --AristotlePagaltzis
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+''It'll be finished soon, and most of it can be condensed down into 'Use decent recording hardware, preamp if possible, gwc will clean your audio nicely, but if you are using 2.6 and an ATAPI CDWriter, use Nero under Windows to burn to CD.'' --DanielLawson
!! Hardware used:
I have a Celeron-1300, running Windows 98 (wait a bit...), which has an SB Audidy 2 Platinum eX. As far as I know, there aren't decent drivers for the Audigy under linux, hence staying under Windows 98. That said, I'm not using it very much - it has RCA inputs on its external unit, which means I can plug my turntable directly in.
@@ -116,10 +118,14 @@
* A good turntable. Turns out mine wasn't so hot. The stylus is probably the most important bit of this, and I suspect mine has been mistreated.
* A decent set of headphones (for monitor purposes). And probably a decent set of speakers to check the full range
* A preamp. The output gain from most turntables is low. This is normal. In one of the vinyls I was trying to restore, it was so low the computer wouldn't record anything. A preamp with monitor output, and simple input/output gain controls is probably fine.
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+''Turntable sound output is down around 5mVolts compared to CD output at around 150mVolts. Also the signal needs something called frequency equalisation to restore the output to proper proportions. Disk Smith sells a turntable with inbuilt preamp for $100 that will do the job.'' --Paul Cleary
You should also make sure your soundcard has a good SNR. The Creative Audigy 2 Platinum Ex has a good one, although it's taken ages for Creative Labs to turn this product into anything more than gamers toy. There's plenty of high-quality professional level cards that will do this very well, and cost less than the Audigy / Extigy (I checked earlier, I cant remember the manufacturer of the cards I was looking at tho, will append later).
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+''I use a cheap $60 Creative soundblaster card for this work and I get very good SNR. The thing to realise is that in all low to med cost soundcards, the audio input part that converts the analog signal to digital is virtually the same. The difference in the cost of the cards is paying for is all the fancy signal manipulation and sounds effects. A person recording from LP to a WAV file just needs the conversion part. I recommend you read Clive Backham's webpages on converting vinyl LPs to CDs (Search on Google using Clive Backham convert lp cd). He discusses the whole process from start to finish, including equipment, soundcards and software. I use his Waverepair software for LP to CD conversions but it only works on Windows.'' --Paul Cleary
It's now Christmas day. I made a few CD copies of what I acheived last night, which sounded at the time like a great improvement. I'm sure it was a great improvement, however its wise to use the correct speed setting when playing back records. I'd been testing the input with a Faith No More LP (45), and forgot to flick the speed setting back down when I started with Music for the Feast of Christmas.
I'm thinking of stamping a label on the CDs I wrote calling them "Music for the Feast of Christmas, by the Chipmunks of Ely Cathedral"
