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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
zaikesman
3,017 posts
 
Fine as the console may have been, that doesn't answer the monitor question. Again, I don't doubt that there may be a germ of basis in fact for this story, but no matter what Mr. Neve theorizes, I don't believe it's because Mr. Emerick can hear minor response variations *at* 54KHz, even if the audible problem did turn out to be *correlated with* or *caused by* something occurring at that frequecy. Mr. Neve may be in a position to know what the end result of episode was, but IMO can't be certain about the mechanism for its original detection. It makes for a nice story though...
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
jbatlanta
97 posts
 
So, getting back to the original topic, then LP is the 'superior' recording medium because it will reproduce music in more extented frequencies than CD is capable of?

Is this correct?
eldartford
4,262 posts
 
A vinyl disc can produce higher frequencies than a CD. The CD limit is 22 KHz, and it is a "brick wall"...nothing at all above it. However, fidelity does not degrade until this limit is reached. The fidelity of vinyl degrades gradually, and what you can get higher than 20KHz depends on the pickup used, and in any event will be of degraded fidelity. Also, high frequency information on a vinyl record degrades with repeated playing. Finally, there is some argument as to whether response over 20KHz is audible (to the majority of listeners).

"Superior" involves a lot more than frequency response. For use in an automobile, a CD is clearly superior.
zaikesman
3,017 posts
 
JB: The problem seems to have more to do with the CD standard's implementation of the steep ultrasonic filter so close to the audioband, rather than the loss of the ultrasonic frequencies per se. However, the solution takes care of both problems: Simply increasing the sampling frequency (in a PCM format) of the recording, storage media, and playback machine, as is done with hi-rez DVD-A, to at least double the 44KHz CD standard will both extend the ultrasonic response into LP territory, and move the anti-aliasing filter well above the audioband allowing for a much gentler and less problematic filter slope.
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