Author Topic: 78rpm Records Digitized  (Read 84 times)

pxsant

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78rpm Records Digitized
« on: August 09, 2017, 03:58:27 AM »
This was posted on Hacker News.   Many old and interesting recordings at the link.   Most are scratchy but you could run them through a cleanup program if downloaded.

https://archive.org/details/georgeblood

Noise can be removed using Audacity.   Here are the directions.

https://www.howtogeek.com/howto/40469/the-how-to-geek-guide-to-audio-editing-basic-noise-removal/
« Last Edit: August 09, 2017, 06:11:27 AM by pxsant »

Code Refugee

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Re: 78rpm Records Digitized
« Reply #1 on: August 09, 2017, 10:36:40 AM »
I thought the discussion about the needle size was very interesting as a technical geek thing.

Turns out different labels printed their grooves to be ideal for different size needles, but they never publicized or documented which ones. So for a given label you want to have the right needle and there's something of a consensus among collectors about which is the right one.

However, there's a caveat. Whatever needle size the owner of the record actually really used, if the vintage record was played a lot, the groove is is going to be most worn out and have the most damage at that point. So a thinner deeper needle or a fatter higher one will get a better result. And of course one has no idea who owned the various records coming in or what needle size they used, and if you could find them and they were still alive they wouldn't remember either.

As a result,  they used a custom turntable able to turn consistently at an extremely precise clarity regardless of load, and with four separate needles attached simultaneously. The needles though were chosen differently for each record! They would always include the "recommended" one for the label, but then they would run the others based on what sounded good and their experience over time.

They then upload all four recordings, which always sound bad, plus four more recordings with EQ applied that simulates the gramophone cone, which sounds better. Then they link to the recording that they subjectively felt sounded best. And it seems in some cases that one is a composite when they had to combine different recordings because there might be a scratch at some depth that one needle picks up but not another.

JoFrance

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Re: 78rpm Records Digitized
« Reply #2 on: August 13, 2017, 02:56:34 PM »
What a cool site!  All those recordings are so old.