{"id":2407,"date":"2003-08-07T16:41:23","date_gmt":"2003-08-07T06:41:23","guid":{"rendered":"http:\/\/hifi-writer.com\/wpblog\/?p=2407"},"modified":"2010-09-30T15:54:33","modified_gmt":"2010-09-30T05:54:33","slug":"spdif-misconception","status":"publish","type":"post","link":"http:\/\/hifi-writer.com\/wpblog\/?p=2407","title":{"rendered":"S\/PDIF Misconception"},"content":{"rendered":"

\"PowerDVDA couple of nights ago I installed CyberLink’s new\u00a0PowerDVD 5 Deluxe<\/a>. Good stuff — with some worthwhile improvements over version 4.0, particularly software DTS decoding (this was previously an optional extra). But I couldn’t work out\u00a0this ’24\/96 LPCM Direct Output’ feature<\/a>, so I went to its support page and wrote:<\/p>\n

In FAQ ID number 1366 it states “(25) 24\/96 LPCM Direct Output, supports 24bit\/96kHz LPCM audio output with more crisp and clear sound. To enable this feature, users should have a sound card that also supports 24bit\/96kHz audio output.” I am using a Terratec DMX6fire 24\/96 sound card with the latest drivers, but when playing a 24\/96 Chesky DVD (which does not have prohibition on 96kHz output), the signal is downsampled to 48kHz. How do you enable 96kHz S\/PDIF output?<\/span><\/p><\/blockquote>\n

Much to my surprise, I got an email this afternoon pointing me to a\u00a0response<\/a>, which said:<\/p>\n

SPDIF cannot support 96\/24 SPDIF output since it is the limitation of SPDIF itself.<\/span>Please switch to analog output (ie 2-speaker or headphone output interface in PowerDVD) to have 96K output.<\/span><\/p><\/blockquote>\n

But, actually, that’s not quite right. As I responded:<\/p>\n

Thanks for the quick response!You wrote: “SPDIF cannot support 96\/24 SPDIF output since it is the limitation of SPDIF itself.”<\/p>\n

That is correct as far as the original design of S\/PDIF was concerned (it was limited to 44.1 or 48kHz and 16 bits), but S\/PDIF now defacto supports AC3, DTS and higher LPCM standards. In particular, the Terratec DMX6fire 24\/96 *does* ouput 24\/96 on the S\/PDIF, and it will *accept* 24\/96 on its S\/PDIF inputs. Furthermore, my Marantz SR18 home theatre receiver (and, indeed, most receivers these days) will accept a 24\/96 LPCM signal on its S\/PDIF input. Many good DVD players will output 24\/96 LPCM S\/PDIF (most Sony, Panasonic, Pioneer, Yamaha, Denon, Onkyo DVD players, for example). So it would be nice if PowerDVD would likewise support this output on S\/PDIF, instead of downsampling it to 48kHz.<\/p>\n

<\/span>The reason, incidentally, is for those of us who prefer the sound of external equipments’ D\/A converters.<\/span><\/p><\/blockquote>\n

UPDATE<\/strong> (Tuesday, 12 August 2003, 12:27 pm)<\/span>:\u00a0CyberLink<\/a> replies:<\/p>\n

We just delivered your suggestion to our product team. We will take this into consideration for further design. Be free for further suggestions. Thank you.<\/span><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

A couple of nights ago I installed CyberLink’s new\u00a0PowerDVD 5 Deluxe. Good stuff — with some worthwhile improvements over version 4.0, particularly software DTS decoding (this was previously an optional extra). But I couldn’t work out\u00a0this ’24\/96 LPCM Direct Output’ … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6,29],"tags":[],"_links":{"self":[{"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=\/wp\/v2\/posts\/2407"}],"collection":[{"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2407"}],"version-history":[{"count":2,"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=\/wp\/v2\/posts\/2407\/revisions"}],"predecessor-version":[{"id":2409,"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=\/wp\/v2\/posts\/2407\/revisions\/2409"}],"wp:attachment":[{"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2407"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/hifi-writer.com\/wpblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}