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| Thread ID: 79245 | 2007-05-13 22:25:00 | Software to record 75's at 33rpm | Hokonui (8280) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 549634 | 2007-05-13 22:25:00 | I recall some time ago I had some audio recording software that had an option to record 78's at 33 rpm and it converted the recording to the correct speed as it went. Can anyone help with a name or in fact any software (freeware preferably) that might have this sort of capability (I have 78's I want to record but turntable only plays 45/33 rpm) Thanks |
Hokonui (8280) | ||
| 549635 | 2007-05-14 00:41:00 | Do I understand that you are actually cutting vinyl records? I haven't seen equipment to do that sorta stuff for decades. If I had to save a 78RPM, I'd do it in Audacity (freeware) first and then use your I/O to send the signal to your record cutting machinery. Can you send a pix of whatever you are using to do that? Sidebar: Audacity can change the rendered speed as you want without changing pitch...it's all in the TOOLS area. WMP10 can also change speeds for playback without messing with the pitch...but you gotta have some serious amounts of RAM to get a clean copy. I hope I understand your question correctly. :nerd: |
SurferJoe46 (51) | ||
| 549636 | 2007-05-14 01:10:00 | Thanks Audacity was the name I was after. Not cutting records just wanted to copy some old 78's to my hard drive. | Hokonui (8280) | ||
| 549637 | 2007-05-14 01:43:00 | Unless these are vinyl 78s I would be worried about what it will do to your stylus and the fact that if it is an LP stylus it will play in the bottom of the grooves causing lots of noise. I have seen software to do this but can't remember where.. | paulw (1826) | ||
| 549638 | 2007-05-14 03:03:00 | ...again, Audacity can remove "hiss" and scratch noises quite well.... | SurferJoe46 (51) | ||
| 549639 | 2007-05-14 03:48:00 | Hokonui probably knows all this, that's why I've been reluctant to post, but since the stylus problem has been raised, I'll make a few comments. It's not just that an LP or "microgroove" stylus will cause noise, it wont even reproduce the sounds properly, since it wont follow the laterally cut groove properly, so no amount of digital processing will put back what wasn't picked up. A 78 rpm stylus should have a radius of about 0.0025" (0.063mm) or bigger for older 78s, around .003" (0.075mm), or a bit more even. Then there is the question of having a 'more or less' correct equaliser circuit for 78rpm records, and there were quite a few different characteristics used back in the old days. The RIAA equalisation curve for LPs as built into phono pre amps is not suitable. The 78 rpm 'Decca' characteristic from the 50s will do for most 78s. The 'experts' dont really like playing at 33rpm and then speeding up via software for two reasons; a) the cartridge output is lower at the lower rpm, this tends to increase noise, ie reduce signal to noise ratio. b) The equalisation curves go haywire. It would be much better in the long run, if you have many 78s to get hold of a turntable that has a 78 cartridge/stylus, even an old one from a second hand shop with a 'turnover' cartridge would potentially be better than trying to use a 33/45 rpm player with the wrong stylus. Pudneys I believe still supply LP/78 stylii. |
Terry Porritt (14) | ||
| 549640 | 2007-05-14 04:48:00 | Thorn needles, famous for a mellow tone, could probably be replaced with thorns from gorse bushes. Steel needles should be replaced after one use. The shellac records contained abrasive, to give them some defence against the needles. ;) Just make sure that the famous HMV dog doesn't bark while you are recording. |
Graham L (2) | ||
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