TT Dynamic Range meter "lies" about vinyl's dynamic rang
Reply #25 – 2013-10-08 01:37:14
Why do all (by all I'm speaking from my personal experience thus far as well) the eighties LPs measure almost exactly the same as their CD counterparts? Both are equally dynamic but for some reason always have pretty much the same DR "value" as one another. ...these records should, in theory, be "scoring" 3-4 dB higher on that meter as well. The records have the same issues of crosstalk, soundstage, etc. that we're taking Ian's word is changing the the "value" of his own recording. I believe it's the lack of excessive compression (or lack of excessive compression). If you take an "pure" uncompressed recording of an orchestra and run it through an all-pass filter, the DR "measurement" or crest factor should be unaffected, because all of the frequency-components sum-up randomly either way. But a compressed/limited file has been limited wherever the frequency-components "randomly" sum-up to exceed the threshold/limit. When you all-pass, the timing of the various frequency components is "randomized" again... That seems like a reasonable explanation. Thanks also for your willingness to discuss this. I'm actually interested in this particular topic without some a priori expectations or agenda to gloat about. I just want to know the truth about it all and nothing more or less. That's why I tend to trust Ian Shepherd's findings and (lack of) motives for looking into this. He comes across as one who likes both digital and vinyl for different reasons and doesn't seem to have some axe to grind.