{"id":491,"date":"2022-06-05T12:09:50","date_gmt":"2022-06-05T12:09:50","guid":{"rendered":"https:\/\/global.tab-tv.com\/sk\/?p=491"},"modified":"2022-06-05T12:09:51","modified_gmt":"2022-06-05T12:09:51","slug":"co-znamena-digitalny-zvukovy-vystup-s-pdif-vystup-spdif","status":"publish","type":"post","link":"https:\/\/global.tab-tv.com\/sk\/co-znamena-digitalny-zvukovy-vystup-s-pdif-vystup-spdif\/","title":{"rendered":"\u010co znamen\u00e1 digit\u00e1lny zvukov\u00fd v\u00fdstup S\/PDIF (v\u00fdstup SPDIF)?"},"content":{"rendered":"\n

<\/a>V\u00fdstupn\u00fd port SPDIF<\/strong><\/h1>\n\n\n\n

S\/PDIF je Sony\/Philips Digital Interconnect Format, niekedy dek\u00f3dovan\u00fd ako Sony Philips Digital Interface (rovnak\u00e1 skratka). Tento form\u00e1t vyvinuli spolo\u010dnosti Sony a Phillips. Tento form\u00e1t sa m\u00f4\u017ee pren\u00e1\u0161a\u0165 cez optick\u00fd alebo koaxi\u00e1lny k\u00e1bel. V skuto\u010dnosti ide o protokol na prenos \u00fadajov. To znamen\u00e1, \u017ee je d\u00f4le\u017eit\u00e9 pochopi\u0165, \u017ee tento \u0161tandard nem\u00e1 ni\u010d spolo\u010dn\u00e9 s typom k\u00e1bla, je to \u0161tandard pre k\u00f3dovanie a n\u00e1sledn\u00fd prenos \u00fadajov.<\/p>\n\n\n\n

<\/a>\u010co znamen\u00e1 SPDIF v telev\u00edzii?<\/strong><\/h1>\n\n\n\n

SPDIF je form\u00e1t prenosu d\u00e1t, ktor\u00fd sa pou\u017e\u00edva na pripojenie r\u00f4znych komponentov dom\u00e1ceho kina a z\u00e1bavn\u00fdch syst\u00e9mov k zvukov\u00fdm syst\u00e9mom.<\/p>\n\n\n\n

Je zalo\u017een\u00fd na \u0161tandarde AES3 a pren\u00e1\u0161a dva kan\u00e1ly nekomprimovan\u00e9ho PCM alebo komprimovan\u00e9ho priestorov\u00e9ho zvuku 5.1\/7.1 (ako napr\u00edklad zvukov\u00fd kodek DTS).<\/p>\n\n\n\n

Tento \u0161tandard v\u0161ak nepodporuje bezstratov\u00e9 form\u00e1ty priestorov\u00e9ho zvuku, preto\u017ee si vy\u017eaduj\u00fa v\u00e4\u010d\u0161iu \u0161\u00edrku p\u00e1sma.<\/p>\n\n\n\n

<\/a>Ak\u00fd je rozdiel medzi digit\u00e1lnym zvukov\u00fdm v\u00fdstupom SPDIF a optick\u00fdm SPDIF?<\/strong><\/h2>\n\n\n\n

Existuj\u00fa dva \u0161tandardy SPDIF pod\u013ea typu konektora: meden\u00fd a optick\u00fd. Tieto dva \u0161tandardy s\u00fa rovnak\u00e9 z h\u013eadiska typu k\u00f3dovania. Rozdiel je v tom, \u017ee digit\u00e1lny zvukov\u00fd v\u00fdstup SPDIF <\/strong>pou\u017e\u00edva na prenos \u00fadajov (napr\u00edklad zvuku) meden\u00fd k\u00e1bel, zatia\u013e \u010do optick\u00fd SPDIF <\/strong>pou\u017e\u00edva na prenos zvuku optick\u00e9 vl\u00e1kno.<\/p>\n\n\n\n

Ako som u\u017e povedal, tieto v\u00fdstupy spolo\u010dne vyvinuli spolo\u010dnosti Sony a Philips na pou\u017eitie v telev\u00edzoroch a in\u00fdch zvukov\u00fdch zariadeniach. Pou\u017e\u00edvaj\u00fa sa predov\u0161etk\u00fdm na prenos zvuku, napr\u00edklad z telev\u00edzora do extern\u00e9ho akt\u00edvneho reproduktora (napr\u00edklad soundbaru).<\/p>\n\n\n\n

Spo\u010diatku SPDIF podporoval prenos zvuku v stereo form\u00e1te bez kompresie. Po \u010fal\u0161om zdokonalen\u00ed podporuje SPDIF v\u00fdstup zvuku vo form\u00e1toch 5.1, 7.1 a s kompresiou.<\/p>\n\n\n\n

\"\"
Sch\u00e9ma v\u00fdstupu SPDIF<\/em><\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

<\/a>Stru\u010dn\u00e1 hist\u00f3ria v\u00fdstupu SPDIF<\/strong><\/h2>\n\n\n\n

P\u00f4vodne sa tento prenosov\u00fd form\u00e1t objavil v 90. rokoch 20. storo\u010dia na za\u010diatku \u00e9ry digit\u00e1lneho zvuku, ke\u010f sa zvuk za\u010dal zaznamen\u00e1va\u0165 digit\u00e1lne na disky CD.<\/p>\n\n\n\n

Vtedy vznikla potreba pren\u00e1\u0161a\u0165 zvuk digit\u00e1lne do soundbaru alebo reproduktora bez \u010fal\u0161\u00edch konverzi\u00ed. Vtedy vznikol form\u00e1t SPDIF, ktor\u00fd bol navrhnut\u00fd na prenos zvuku z DVD prehr\u00e1va\u010da do reproduktorov, stereo syst\u00e9mov a soundbarov.<\/p>\n\n\n\n

SPDIF \u00faplne splnil svoju \u00falohu, tak\u017ee sa \u010dasom stal v tomto odvetv\u00ed ve\u013emi roz\u0161\u00edren\u00fdm. SPDIF sa pou\u017e\u00edva v telev\u00edzoroch vo forme optick\u00e9ho v\u00fdstupu. Nesk\u00f4r boli zaveden\u00e9 podobn\u00e9 mo\u017enosti prenosu zvuku, ako napr\u00edklad HDMI ARC.<\/p>\n\n\n\n

<\/a>Ak\u00fd je rozdiel medzi SPDIF a optick\u00fdm k\u00e1blom?<\/strong><\/h2>\n\n\n\n

Okrem form\u00e1tu SPDIF sa akt\u00edvne pou\u017e\u00edva aj \u010fal\u0161\u00ed form\u00e1t prenosu zvuku – Toslink (zn\u00e1my aj ako optick\u00fd). Je to form\u00e1t na prenos sign\u00e1lov pomocou optick\u00fdch vl\u00e1kien.<\/p>\n\n\n\n

Ak chcete stru\u010dne vysvetli\u0165, ako to funguje z technick\u00e9ho h\u013eadiska, optick\u00e9 k\u00e1ble pren\u00e1\u0161aj\u00fa inform\u00e1cie vo forme svetla, ktor\u00e9 prech\u00e1dza optick\u00fdm vl\u00e1knom.<\/p>\n\n\n\n

Ke\u010f hovor\u00edme “optick\u00fd”, m\u00e1me na mysli form\u00e1t ADAT, ktor\u00fd je ak\u00fdmsi konkurentom form\u00e1tu SPDIF. Tak\u00fdto sign\u00e1l sa v\u0161ak mus\u00ed konvertova\u0165, aby sa zabr\u00e1nilo ru\u0161eniu. M\u00e1 v\u0161ak aj svoje v\u00fdhody. Na rozdiel od prenosu d\u00e1t po meden\u00fdch k\u00e1bloch svetlo netrp\u00ed \u00fatlmom ani impedanciou, tak\u017ee sign\u00e1l mo\u017eno pren\u00e1\u0161a\u0165 na ak\u00fako\u013evek vzdialenos\u0165.<\/p>\n\n\n\n

Optick\u00fd sign\u00e1l sa zvy\u010dajne pren\u00e1\u0161a prostredn\u00edctvom optick\u00e9ho k\u00e1bla, zatia\u013e \u010do SPDIF sa zvy\u010dajne pou\u017e\u00edva s koaxi\u00e1lnym k\u00e1blom s konektorom RCA. M\u00f4\u017ee sa v\u0161ak pou\u017ei\u0165 aj optick\u00fd SPDIF prostredn\u00edctvom optick\u00e9ho k\u00e1bla.<\/p>\n\n\n\n

<\/a>\u010co je digit\u00e1lny zvukov\u00fd v\u00fdstup SPDIF?<\/strong><\/h2>\n\n\n\n

Digit\u00e1lny zvukov\u00fd v\u00fdstup <\/strong>je v\u00fdstup v podobe z\u00e1str\u010dky zn\u00e1mej od \u010dias anal\u00f3govej telev\u00edzie, spr\u00e1vny n\u00e1zov je RCA. Zariadenia s\u00fa navz\u00e1jom prepojen\u00e9 koaxi\u00e1lnym k\u00e1blom, zvuk sa pren\u00e1\u0161a digit\u00e1lne pomocou \u0161peci\u00e1lnych protokolov. Pribli\u017en\u00e1 maxim\u00e1lna d\u013a\u017eka k\u00e1bla medzi zariadeniami je 10 metrov (32 st\u00f4p). Maxim\u00e1lna d\u013a\u017eka k\u00e1bla v\u0161ak z\u00e1vis\u00ed od kvality pou\u017eit\u00fdch materi\u00e1lov a v\u00fdroby k\u00e1bla.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

<\/a>\u010co je optick\u00fd SPDIF?<\/strong><\/h2>\n\n\n\n

Optick\u00fd form\u00e1t SPDIF (Sony\/Philips Digital Interface Format) <\/strong>je \u0161tandardom na prenos sign\u00e1lov prostredn\u00edctvom optick\u00e9ho k\u00e1bla. Zvuk sa pren\u00e1\u0161a pomocou lasera cez optick\u00fd k\u00e1bel medzi zariadeniami. V\u00fdkon pren\u00e1\u0161an\u00e9ho optick\u00e9ho sign\u00e1lu je dostato\u010dn\u00fd na prenos sign\u00e1lu do vzdialenosti medzi zariadeniami pribli\u017ene 10 metrov. V pr\u00edpade optick\u00e9ho k\u00e1bla sa konektor na zariaden\u00ed naz\u00fdva Toslink.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

<\/a>Optick\u00fd v\u00fdstup SPDIF vs. digit\u00e1lny zvukov\u00fd v\u00fdstup SPDIF<\/strong><\/h2>\n\n\n\n

Tieto v\u00fdstupy s\u00fa z h\u013eadiska kvality pren\u00e1\u0161an\u00e9ho sign\u00e1lu rovnak\u00e9. V pr\u00edpade optick\u00e9ho SPDIF sa v\u0161ak ako prenos sign\u00e1lu pou\u017e\u00edva optick\u00fd sign\u00e1l, v druhom pr\u00edpade sa pou\u017e\u00edva fyzick\u00fd sign\u00e1l.<\/p>\n\n\n\n

V oboch pr\u00edpadoch sa zvukov\u00fd sign\u00e1l pren\u00e1\u0161a digit\u00e1lne a nepodlieha skresleniu ani zoslabeniu. Na rozdiel od anal\u00f3gov\u00e9ho sign\u00e1lu, ktor\u00fd je n\u00e1chyln\u00fd na skreslenie a pri r\u00f4znych frekvenci\u00e1ch nerovnomerne slabne: \u010d\u00edm vy\u0161\u0161ia je frekvencia, t\u00fdm viac sign\u00e1l slabne. Oba form\u00e1ty SPDIF sa pou\u017e\u00edvaj\u00fa pomerne \u0161iroko, optick\u00fd v telev\u00edzoroch, fyzick\u00e9 rozhrania s\u00fa be\u017enej\u0161ie v po\u010d\u00edta\u010doch.<\/p>\n\n\n\n

<\/a>\u010eal\u0161ie porty na digit\u00e1lny prenos zvuku<\/strong><\/h2>\n\n\n\n

Podobn\u00fdch pripojen\u00ed na prenos digit\u00e1lneho zvuku nie je ve\u013ea, jednou z hlavn\u00fdch \u00faloh tak\u00fdchto protokolov je prenos digit\u00e1lneho viackan\u00e1lov\u00e9ho zvuku DTS alebo Dolby z jedn\u00e9ho zariadenia do druh\u00e9ho.<\/p>\n\n\n\n

Podobn\u00e9 funkcie pln\u00ed port HDMI a variant HDMI ARC, Display Port. Ide v\u0161ak o protokoly, ktor\u00e9 kombinuj\u00fa prenos obrazu a zvuku, zatia\u013e \u010do SPDIF je v\u00fdlu\u010dne form\u00e1t prenosu zvuku.<\/p>\n","protected":false},"excerpt":{"rendered":"

V\u00fdstupn\u00fd port SPDIF S\/PDIF je Sony\/Philips Digital Interconnect Format, niekedy dek\u00f3dovan\u00fd ako Sony Philips Digital Interface (rovnak\u00e1 skratka). Tento form\u00e1t vyvinuli spolo\u010dnosti Sony a Phillips. Tento form\u00e1t sa m\u00f4\u017ee pren\u00e1\u0161a\u0165 cez optick\u00fd alebo koaxi\u00e1lny k\u00e1bel. V skuto\u010dnosti ide o protokol na prenos \u00fadajov. To znamen\u00e1, \u017ee je d\u00f4le\u017eit\u00e9 pochopi\u0165, \u017ee tento \u0161tandard nem\u00e1 ni\u010d spolo\u010dn\u00e9 […]<\/p>\n","protected":false},"author":1,"featured_media":495,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[86],"tags":[87],"class_list":{"0":"post-491","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-technologia","8":"tag-technologia"},"_links":{"self":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/491","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/comments?post=491"}],"version-history":[{"count":1,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/491\/revisions"}],"predecessor-version":[{"id":496,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/491\/revisions\/496"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/media\/495"}],"wp:attachment":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/media?parent=491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/categories?post=491"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/tags?post=491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}