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Topic: Tape artifacts (Read 15735 times) previous topic - next topic
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Tape artifacts

Reply #25
3 sounds "gritty", basically you hear very short volume drops that are different on the left and right channel. No idea if it has a name except 'tape wear' or something.

Tape artifacts

Reply #26
Is that the artifact present on my last sample? (Artifact.wav)

How do I fix that?

Tape artifacts

Reply #27
Here's a recording to give you an impression of what audio quality can be obtained from a cassette, assuming good recording and playback quality. This tape is about 25 years old.
http://www.sendspace.com/file/b6uwtt

Tape artifacts

Reply #28
Is that the artifact present on my last sample? (Artifact.wav)

How do I fix that?

Yes! Unfortunately I really have no idea how you can fix it.

If it were a mono recording you could do something with combining information from the two channels, but for stereo recordings it's very hard to figure out if it's a wanted effect in the music or a bad tape. (I'm not saying it's impossible - WE can do it after all - but it's often not that easy to transform something that 'we' can do into software).

Storing tapes correctly and only playing them on high quality equipment helps... But it's too late for that now.

Tape artifacts

Reply #29
So if I hand this to a professional restorer, is he going to straight give it back to me?
or in other words, is this an unfixable artifact? (in the software realm)

Tape artifacts

Reply #30
Can somebody help?

What is this artifact called and how to fix it?

(it was previously hiss reduced and level equalized)
http://www.mediafire.com/listen/4z9csqv2zzd1kau/Artifact.wav


The artifact in the right channel at 4:48 looks and sounds to me like a drop out. I was able render it relatively harmless by copying  about 0.2 seconds at that point from the left channel and pasting it into the right channel.

Tape artifacts

Reply #31
Thanks a bunch Arnold!!

So indeed, this is food for meticulous work...
I can appreciate some denting as well in higher frequencies like in left channel 4.2, 4.32 or 4.63. So no (semi) automatic way for this kind of drop-outs right?

Tape artifacts

Reply #32
What about this "buzz" when voice gets in? It sounds kinda clipped audio, but I recorded it from tape (far from being clipped) and declipping doesn't show much improvement, I also tried with EQ but that's not. What is it and how to fix?

3Mb
http://www.mediafire.com/listen/f9skr1u435...f/chunk_RAW.wav

 

Tape artifacts

Reply #33
What about this "buzz" when voice gets in? It sounds kinda clipped audio, but I recorded it from tape (far from being clipped) and declipping doesn't show much improvement, I also tried with EQ but that's not. What is it and how to fix?

3Mb
http://www.mediafire.com/listen/f9skr1u435...f/chunk_RAW.wav


Brutally clipped probably prior to being put on tape and then bandpass filtered.  A lost cause.

The clipping is particularly obvious both audibly and visibly between 1:018 and 1:538