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Frequency Response of L.P's

I have been trying to find out what the general Frequency Response of vinyl was over the other formats after reading an article in the Stereophile archives by John Atkinson called "What's going on up there?".Out to about 40Khz seemed to be the magic figure and he seemed to imply a lot of Classical music on the other hand might extend out to 30Khz.This compares favourably of course to cd with a cut-off of 22.05Khz and SACD with a lot of noise rising sharply above 40Khz and rolled off at 50Khz.DVD-A seems to partly match the extended response of vinyl but is digital not analogue.I have seen figures given of above 60Khz without proof for vinyl and some direct-to-disk recordings made in England extended out to 50Khz.In the 1950's a U.S recording company(RCA?)was recommending a player that provided 15Hz-35Khz for proper reproduction of vinyl in their advertising.Anyone care to impart their knowledge on this subject from among the learned members?
stefanl

Showing 4 responses by stefanl

stefanl OP
296 posts
 
Yes,Mr.Neve says that he does not really know what makes us perceive sounds the way we do,but is a firm believer in wide bandwidth for commercial recordings.Anyway what goes on an LP in terms of bandwidth which was my original question and we seemed to have wandered off the topic.stefanl
stefanl OP
296 posts
 
There is the old story of Geoff Emerick the Beatles guy calling Rupert Neve in to suss a fault on a console,that he designed,and Emerick's "golden ears" were not happy with.It turned out that Emerick could hear a fault in 3 panels generated by a 3dB glitch at 54Khz.Some transformers were wired wrongly and he could hear it even though it seemed to be o.k.and people thought he was being fussy.Ultrasonics do effect hearing.stefanl
stefanl OP
296 posts
 
The story about Geoff Emerick is true I have seen 2 Rupert Neve interviews online where he repeats it,and a discussion on a Pro-Audio forum talking about it and how well thought of he is.Anyway in a transcript I have,Mr.Neve talks about his 5106 Console and it goes 5Hz to 150Khz.He says all his designs of this time were of that order.The 5106 being designed by Geoff Watts who worked for Mr.Neve at that time.There is a Neve Webpage and redesigned versions of the early Consoles may be offered.stefanl
stefanl OP
296 posts
 
The frequencies in the ultrasonic area of LP's do not seem to "wear out" after repeated plays.The article by Stereophile's editor-in-chief John Atkinson called "What's going on up there" found in their archives section on-line is absolutely essential reading.He used the end track of a record he had played on in the 70's (he could'nt locate the master tape).It had clicks and had been played many times, the frequency spectrum showed an extended frequency response for this LP that reached 40Khz.This was consistent with other recordings.The sonic information caused mainly by electric guitar and drums cymbals it was rock music.Anyway a classical sample he had extended out to 30 Khz.This is the area where LP looks very similar to DVD-A.stefanl
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