Music and Audio<\/a> book. I have included the spectra of one of my high-res classical tracks below for comparison.<\/p>\n![\"\"](\"http:\/\/www.realhd-audio.com\/wp-content\/uploads\/2018\/05\/classical_comparison_2.jpg\")
<\/p>\n
The right half of the spectra shows a huge amount of ultrasonic audio \u2014 well past 35 kHz. This is the finale of Stravinsky’s Firebird Suite and is a particularly loud section. The left hand spectra is much quieter and doesn’t actually pass above normal CD frequencies but does have a sharp cutoff at 22 kHz.<\/p>\n
A better way to illustrate the amount of content provided by high-res sample rates is to scan the entire file and plot the amplitude vs frequency of the entire selection. The plot below is the classical piece I downloaded. Notice that the standard-res converted file actually contains more ultrasonic content than the original! That’s not supposed to happen. Now maybe this is the result of the software that was used to make the conversion but it definitely shows lots of content above 24 kHz (I converted down to 48 Khz). The red line should drop straight down \u2014 and it doesn’t.<\/p>\n
![\"\"](\"http:\/\/www.realhd-audio.com\/wp-content\/uploads\/2018\/05\/classical_comparison_1_spectra.jpg\")
<\/p>\n
Take a look at the conversion that I did on my file. It shows the proper relationship between a real high-resolution track and a CD version. The red line does drop immediately at 22 kHz.<\/p>\n
![\"\"](\"http:\/\/www.realhd-audio.com\/wp-content\/uploads\/2018\/05\/classical_comparison_2_spectra.jpg\")
<\/p>\n
So I wonder what kind of results the author of the comment has received from his survey. It would be absolutely impossible for anyone on the planet to perceive any differences between the two files he provided. I’m not going to claim that listeners would be able to perceive differences between my A and B versions, but at least I know that substantial differences do exist. As I said, I wasn’t surprised that the audio he acquired didn’t measure up. There isn’t a lot of really good high-resolution content available from any label. I’m in a unique position because my entire catalog boasts fidelity greater than vinyl LPs, analog tapes, and CDs. But that’s not the reason I advocate for real high-resolution tracks. There are other “non audible” reasons why the world should adopt 96 kHz\/24-bits as the minimum AND the maximum specifications. We’ll talk more about that in Part II.<\/p>\n","protected":false},"excerpt":{"rendered":"
I am a member of several audiophile FB groups and regularly post comments when I think I have something to<\/p>\n","protected":false},"author":2,"featured_media":6137,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[45,1,16],"tags":[97,1145,657,50,40,172,1151,1141,1032,70,640,26,639,1043,980,1061,42,298,251,645,638,637,227,643,302,303,169,855,1152,1026,1027,150,1143,347,27,116,659,1139,1142],"class_list":["post-6131","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dr_aixs_posts","category-what-is-hd-audio","category-techtalk","tag-5-1-surround","tag-5-1-surround-mix","tag-advanced-resolution","tag-aix-records","tag-analog-vs-digital","tag-audio-resolution","tag-beamforming","tag-dgitial-audio-review","tag-dvd_audio","tag-hd-downloads","tag-hd-music","tag-hd-audio","tag-hi-res-audio","tag-hi-res","tag-hi-res-music","tag-hi-res-sound","tag-high-resolution-audio","tag-high-res-music","tag-high-resolution","tag-high-resolution-audio-experience","tag-hires-audio","tag-hires-music","tag-hra","tag-hra-listening-experience","tag-lossless","tag-lossy","tag-mark-waldrep","tag-mqa","tag-munich-high-end-show","tag-music-and-audio","tag-music-and-audio-a-user-guide-to-better-sound","tag-pcm","tag-sound-bar","tag-spectragram","tag-spectragraphs","tag-surround-music","tag-uhd-audio","tag-usb","tag-yarra-3dx"],"_links":{"self":[{"href":"https:\/\/www.realhd-audio.com\/index.php?rest_route=\/wp\/v2\/posts\/6131","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.realhd-audio.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.realhd-audio.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.realhd-audio.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.realhd-audio.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6131"}],"version-history":[{"count":3,"href":"https:\/\/www.realhd-audio.com\/index.php?rest_route=\/wp\/v2\/posts\/6131\/revisions"}],"predecessor-version":[{"id":6139,"href":"https:\/\/www.realhd-audio.com\/index.php?rest_route=\/wp\/v2\/posts\/6131\/revisions\/6139"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.realhd-audio.com\/index.php?rest_route=\/wp\/v2\/media\/6137"}],"wp:attachment":[{"href":"https:\/\/www.realhd-audio.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6131"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.realhd-audio.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6131"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.realhd-audio.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6131"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"http:\/\/www.realhd-audio.com\/wp-content\/uploads\/2018\/05\/classical_comparison_1.jpg\")
<\/p>\n