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morris_minor View Drop Down
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Points: 6017 		Post Options Post Options   Thanks (0) Thanks(0)   Quote morris_minor Quote  Post ReplyReply Direct Link To This Post Posted: 10 Feb 2016 at 7:14pm
I'd always thought that half-speed mastering was done to give the cutter head an easier time when laying down a "hot" signal. I think the benefits were a better reproduction of transients and possibly frequency extension.

I wonder if there was ever a 45rpm issue that was half-speed mastered? Ermm
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Chris Firth View Drop Down
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Points: 1532 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris Firth Quote  Post ReplyReply Direct Link To This Post Posted: 10 Feb 2016 at 8:23pm
Originally posted by morris_minor morris_minor wrote:

I'd always thought that half-speed mastering was done to give the cutter head an easier time when laying down a "hot" signal. I think the benefits were a better reproduction of transients and possibly frequency extension.

I wonder if there was ever a 45rpm issue that was half-speed mastered? Ermm


One issue with half speed mastering is that de-essing filters don't work.
Something to do with the transients not triggering the filter.

John Martyn's masterpiece from 1973 is being released on half speed mastered vinyl next month http://thesoundofvinyl.com/*/Pre-Orders/Solid-Air/4ZB804D0000


Edited by Chris Firth - 10 Feb 2016 at 8:23pm
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jazzcatlee View Drop Down
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Points: 34 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jazzcatlee Quote  Post ReplyReply Direct Link To This Post Posted: 10 Feb 2016 at 8:47pm
Chris,
What is a de-essing filter?
"All the hard ways!"
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Chris Firth View Drop Down
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Points: 1532 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris Firth Quote  Post ReplyReply Direct Link To This Post Posted: 10 Feb 2016 at 9:10pm
Originally posted by jazzcatlee jazzcatlee wrote:

Chris,
What is a de-essing filter?


To quote the article on the linked web page
Quote De-essing is a form of processing the signal whereby the “sss” and “t” sounds from the vocalist are controlled in order to avoid sibilance and distortion on playback. None of the tools I would ordinarily employ on a real-time cut work at half speed as the frequencies are wrong so the offending “sss” does not trigger the limiter and everything is moving so slowly there is no acceleration as such for the de-esser to look out for.
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shashirao View Drop Down
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Points: 156 		Post Options Post Options   Thanks (0) Thanks(0)   Quote shashirao Quote  Post ReplyReply Direct Link To This Post Posted: 12 Feb 2016 at 2:22am
The 45rpm 12in vinyls also have a different microgroove structure/design. They are supposed to sound better because the grooves are well spaced. Not sure if that really makes a difference. In my experience, the 12in 45rpm have a brighter sound output.

But as has been said...it all depends on the recording...the sound mastering effort...a bad recording will sound bad on a 45rpm.

The 7in 45rpms can be nice if there is only one song/music piece on each side...approx 4mins....the SPs. The EPs on the other hand have 2 tracks crammed for a total duration of 7mins. Just like the different recording speed modes on the good old VHS tapes. You lose either part of the song or the quality.

In summary,,,the 45rpm for me is good for its novelty value, rare titles or just because the music company did not publish on any other format. 
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jazzcatlee View Drop Down
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Points: 34 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jazzcatlee Quote  Post ReplyReply Direct Link To This Post Posted: 15 Feb 2016 at 3:55am
Ah, yes, I see.

If I understand Mr. Showell's interview, or article, on the linked page, de-essing is an imperfect tool even when mastering a record at full speed. That's because it reduces other sibilant-like sounds indiscriminately. Which can diminish the impact of high-hats, bright guitars and snare drums.
"All the hard ways!"
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