{"id":186,"date":"2010-02-06T23:17:15","date_gmt":"2010-02-06T14:17:15","guid":{"rendered":"http:\/\/fpga.cool.coocan.jp\/wordpress\/?p=186"},"modified":"2010-02-06T23:17:15","modified_gmt":"2010-02-06T14:17:15","slug":"%e3%82%a2%e3%82%a4%e3%82%bd%e3%82%af%e3%83%ad%e3%83%8a%e3%82%b9-vs-%e3%83%90%e3%83%ab%e3%82%af%ef%bc%88%e3%81%9d%e3%81%ae1%ef%bc%89","status":"publish","type":"post","link":"http:\/\/fpga.cool.coocan.jp\/wordpress\/?p=186","title":{"rendered":"\u30a2\u30a4\u30bd\u30af\u30ed\u30ca\u30b9 vs \u30d0\u30eb\u30af\uff08\u305d\u306e1\uff09"},"content":{"rendered":"

\u7686\u3055\u3093\u306f\u30d1\u30bd\u30b3\u30f3\u306bUSB\u30a2\u30c0\u30d7\u30bf\u30fc\u3092\u7e4b\u3044\u3067\u97f3\u697d\u3092\u8074\u304f\u3068\u304d\u306b\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u304a\u3089\u308c\u307e\u3059\u304b\uff1f<\/p>\n

\u00a0\u30aa\u30fc\u30c7\u30a3\u30aa\u30de\u30cb\u30a2\u3067\u306f\u306a\u3044\u65b9\u3082\u542b\u3081\u3066<\/strong>PC\u3067\u97f3\u697d\u3092\u8074\u304f\u65b9\u3092\u6bcd\u96c6\u56e3\u3068\u3057\u305f\u5834\u5408\u3001\u304a\u305d\u3089\u304f\u5727\u5012\u7684\u306b\u300c\u306a\u304c\u3089\u65cf\uff08\u6b7b\u8a9e\uff1f\uff09\u300d\u304c\u591a\u3044\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002\u3059\u306a\u308f\u3061\u3001\u97f3\u697d\u3092\u8074\u304d\u3064\u3064\u3001\u30cd\u30c3\u30c8\u3092\u5f98\u5f8a\u3057\u3064\u3064\u3001\u30e1\u30fc\u30eb\u3092\u66f8\u304d\u3001USB\u30e1\u30e2\u30ea\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30d4\u30fc\u3057\u3001\u305d\u3057\u3066\u30d7\u30ea\u30f3\u30bf\u3092\u4f7f\u3063\u305f\u308a\u3059\u308b\u306e\u3060\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u305d\u3046\u306a\u3093\u3067\u3059\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u4ed5\u69d8\u3092\u6c7a\u3081\u308b\u4eba\u9054\u306f\u3001\u3042\u305d\u3089\u304f\u305d\u306e\u3088\u3046\u306a\u5834\u5408\u3067\u3082PC\u304b\u3089USB\u30a2\u30c0\u30d7\u30bf\u306b\u8ee2\u9001\u3057\u3066\u3044\u308b\u97f3\u697d\u304c\u9014\u5207\u308c\u305f\u308a\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u3092\u6700\u91cd\u8996\u3057\u305f\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u305d\u3057\u3066\u3001\u305d\u306e\u7d50\u679c\u3001USB\u30aa\u30fc\u30c7\u30a3\u30aa\u306e\u8ee2\u9001\u306b\u300c\u30a2\u30a4\u30bd\u30af\u30ed\u30ca\u30b9\u8ee2\u9001\u300d\u304c\u63a1\u7528\u3055\u308c\u305f\u306b\u3061\u304c\u3044\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n

\u300c\u30a2\u30a4\u30bd\u30af\u30ed\u30ca\u30b9\u8ee2\u9001\u300d\u3068\u306f\u3001\u00a0\u4e00\u5b9a\u6642\u9593\u3054\u3068\u306b\u3042\u308b\u7a0b\u5ea6\u306e\u91cf\u306e\u30c7\u30fc\u30bf\u306e\u3084\u308a\u3068\u308a\u3092\u884c\u3044\u305f\u3044\u3068\u304d\u306b\u7528\u3044\u3089\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u30a2\u30a4\u30bd\u30af\u30ed\u30ca\u30b9\u8ee2\u9001\u3067\u306f\u4e00\u5b9a\u6642\u9593\u3054\u3068\u306b\u5fc5\u305a\u8ee2\u9001\u3092\u884c\u3046\u30c1\u30e3\u30f3\u30b9\u304c\u4e0e\u3048\u3089\u308c\u308b\u308f\u3051\u3067\u3059\u3002
\n<\/span><\/p>\n

\u305f\u3068\u3048\u307016bit\/48kHz\u306e\u30b9\u30c6\u30ec\u30aaPCM\u30c7\u30fc\u30bf\u3092USB\u30a2\u30c0\u30d7\u30bf\u306b\u8ee2\u9001\u3059\u308b\u5834\u5408\u3001\u4e0b\u306e\u56f3\u306e\u3088\u3046\u306b\u3001PC\u304c\u97f3\u982d\u3092\u3068\u3063\u30661ms\u3068\u3044\u3046\u6c7a\u3081\u3089\u308c\u305f\u671f\u9593\u5185\u306b48 x 2 x 2 = 192\u30d0\u30a4\u30c8\u306e\u8377\u7269\uff08\u30c7\u30fc\u30bf\uff09\u304c\u6bce\u56deUSB\u30a2\u30c0\u30d7\u30bf\u306b\u9001\u3089\u308c\u308b\u3053\u3068\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u30021\u79d2\u9593\u3067\u306f48,000 x 2 x 2 \u30d0\u30a4\u30c8\u306716bit\/48kHz\u306e\u30b9\u30c6\u30ec\u30aa\u30c7\u30fc\u30bf\u304c\u8ee2\u9001\u3055\u308c\u308b\u308f\u3051\u3067\u3059\u3002<\/span><\/p>\n

\"\"<\/p>\n

\u00a0USB\u306e\u30d0\u30b9\u306b\u8272\u3005\u306a\u30c7\u30d0\u30a4\u30b9\u304c\u7e4b\u304c\u3063\u3066\u3001\u305d\u308c\u305e\u308c\u304c\u8ee2\u9001\u3092\u3057\u3066\u3044\u3066\u3082\u30011ms\u306e\u9593\u306b192\u30d0\u30a4\u30c8\u304c\u8ee2\u9001\u3055\u308c\u308b\u3053\u3068\u304c\u7d04\u675f\u3055\u308c\u3066\u3044\u307e\u3059\u304b\u3089\u3001\u9023\u7d9a\u3057\u305f\u30aa\u30fc\u30c7\u30a3\u30aa\u30c7\u30fc\u30bf\u3092\u5b89\u5b9a\u3057\u3066\u9001\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u3061\u306a\u307f\u306b\u3001\u305d\u308c\u3068\u5f15\u304d\u63db\u3048\u306b\u30c7\u30fc\u30bf\u3092\u53d7\u4fe1\u3057\u305f\u5074\uff08\u3053\u306e\u5834\u5408\u306fUSB\u30a2\u30c0\u30d7\u30bf\uff09\u304c\u3001\u30c7\u30fc\u30bf\u304c\u5316\u3051\u305a\u306b\u6b63\u3057\u304f\u53d7\u3051\u53d6\u308c\u305f\u3088\u3001\u3068\u3044\u3046\u300c\u8fd4\u4e8b\u300d\u3092\u51fa\u3055\u306a\u3044\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u00a0\u3064\u307e\u308a\u3001\u30c7\u30fc\u30bf\u304c\u5316\u3051\u3066\u4f55\u3068\u306a\u304f\u97f3\u304c\u60aa\u304f\u306a\u3063\u3066\u3044\u308b\u3088\u3046\u306b\u611f\u3058\u308b\u3053\u3068\u3082\u3042\u308a\u5f97\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u307e\u305f\u3001PC\u306e\uff08PLL\u3084\u30b9\u30da\u30af\u30c8\u30e9\u30e0\u62e1\u6563\u3055\u308c\u305f\uff09\u6642\u9593\u8ef8\u306e\u63fa\u3089\u3044\u3060\u30af\u30ed\u30c3\u30af\u3067\u30bf\u30a4\u30df\u30f3\u30b0\u3092\u4f5c\u3089\u308c\u305f\u300c1ms\u300d\u3068\u3044\u3046\u9593\u9694\u3067\u30c7\u30fc\u30bf\u304c\u9001\u3089\u308c\u3066\u304f\u308b\u308f\u3051\u3067\u3059\u304b\u3089\u3001\u53d7\u4fe1\u5074\u3067\u306f\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u3082\u305d\u306e\u5f71\u97ff\u3092\u53d7\u3051\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u3069\u3093\u306a\u306b\u4e0a\u624b\u306b\u8a2d\u8a08\u3057\u3066\u3082\u7a0b\u5ea6\u306e\u5dee\u3053\u305d\u3042\u308c\u3001\u30b8\u30c3\u30bf\u3092\u767a\u632f\u5668\u306e\u7cbe\u5ea6\u307e\u3067\u306f\u6e1b\u3089\u3059\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\uff08\u305d\u308c\u3067\u3082\u5341\u5206\u9ad8\u97f3\u8cea\u306a\u30a2\u30c0\u30d7\u30bf\u304c\u5b58\u5728\u3057\u5f97\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u5426\u5b9a\u3067\u304d\u307e\u305b\u3093\u304c\uff09\u3002<\/p>\n

(2\/15\u8ffd\u8a18) \u4e0a\u8a18\u30af\u30ed\u30c3\u30af\u306e\u5236\u7d04\u306f\u3001PCM270X\u7cfb\u306e\u3044\u308f\u3086\u308b\u300cIsochronous (adaptive)\u300d\u3068\u3044\u3046\u65b9\u5f0f\u3067LSI\u5316\u3055\u308c\u305f\u30c1\u30c3\u30d7\u3092\u4f7f\u3046\u5834\u5408\u306e\u3053\u3068\u3067\u3042\u308a\u3001USB\u81ea\u4f53\u306e\u5236\u7d04\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/strong><\/p>\n

\u5f53\u7136\u3001\u5c02\u7528\u306b\u8a2d\u8a08\u3055\u308c\u305fUSB\u30aa\u30fc\u30c7\u30a3\u30aa\u30af\u30e9\u30b9\u3068\u3044\u3046\u6c7a\u307e\u308a\u306e\u4e0a\u3067\u7ba1\u7406\u3055\u308c\u307e\u3059\u306e\u3067\u3001DSD\u4fe1\u53f7\u306f\u8ee2\u9001\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n

\u307e\u305f\u3001PC\uff08OS\uff09\u5074\u306e\u30ab\u30fc\u30cd\u30eb\u30df\u30ad\u30b5\u30fc\u3068\u547c\u3070\u308c\u308b\u30df\u30c9\u30eb\u30a6\u30a7\u30a2\u306b\u3088\u3063\u3066\u52dd\u624b\u306b\u97f3\u304c\u5909\u3048\u3089\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u3001\u305d\u308c\u3092\u56de\u907f\u3059\u308b\u306e\u3082\u9762\u5012\u3060\u3063\u305f\u308a\u3001\u3068\u3044\u3046\u554f\u984c\u3082\u3042\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n

\u3055\u3066\u3001\u4e00\u756a\u6700\u521d\u306e\u8cea\u554f\u306b\u623b\u308a\u307e\u3059\u306d\u3002\u3061\u306a\u307f\u306b\u3001\u79c1\u306f\u30aa\u30fc\u30c7\u30a3\u30aa\u30de\u30cb\u30a2\u3067\u3001PC\u3067\u97f3\u697d\u3092\u8074\u304f\u969b\u306b\u306f\u3001\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u3068\u3057\u3066\u5c02\u7528\u306ePC\u3092\u7528\u610f\u3057\uff08\u3061\u306a\u307f\u306b\u73fe\u5728\u306f\u305d\u308c\u304cThinkPad X31\u3060\u3063\u305f\u308a\u3059\u308b\u306e\u3067\u3059\u304c\uff09\u3001\u00a0\u97f3\u697d\u3092\u8074\u304f\u305f\u3081\u306e\u30bd\u30d5\u30c8\u3060\u3051\u3092\u7acb\u3061\u4e0a\u3052\u3001\u305d\u306ePC\u4e0a\u3067\u306f\u307b\u304b\u306e\u4f5c\u696d\u3092\u4e00\u5207\u3057\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u8074\u304d\u307e\u3059\u3002<\/p>\n

\u30aa\u30fc\u30c7\u30a3\u30aa\u30de\u30cb\u30a2\u3063\u3066\u305d\u3046\u3044\u3046\u65b9\u304c\u307b\u3068\u3093\u3069\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n

\u7d9a\u304f<\/p>\n","protected":false},"excerpt":{"rendered":"

\u7686\u3055\u3093\u306f\u30d1\u30bd\u30b3\u30f3\u306bUSB\u30a2\u30c0\u30d7\u30bf\u30fc\u3092\u7e4b\u3044\u3067\u97f3\u697d\u3092\u8074\u304f\u3068\u304d\u306b\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u304a\u3089\u308c\u307e\u3059\u304b\uff1f \u00a0\u30aa\u30fc\u30c7\u30a3\u30aa\u30de\u30cb\u30a2\u3067\u306f\u306a\u3044\u65b9\u3082\u542b\u3081\u3066PC\u3067\u97f3\u697d\u3092\u8074\u304f\u65b9\u3092\u6bcd\u96c6\u56e3\u3068\u3057\u305f\u5834\u5408\u3001\u304a\u305d\u3089\u304f\u5727\u5012\u7684\u306b\u300c\u306a\u304c\u3089\u65cf\uff08\u6b7b\u8a9e\uff1f\uff09\u300d\u304c\u591a\u3044\u306e\u3067\u306f\u306a\u3044\u3067\u3057 … “\u30a2\u30a4\u30bd\u30af\u30ed\u30ca\u30b9 vs \u30d0\u30eb\u30af\uff08\u305d\u306e1\uff09” \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-186","post","type-post","status-publish","format-standard","hentry","category-usb_audio"],"_links":{"self":[{"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/186","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=186"}],"version-history":[{"count":0,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/186\/revisions"}],"wp:attachment":[{"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=186"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}