{"id":1167,"date":"2015-06-25T10:07:51","date_gmt":"2015-06-25T01:07:51","guid":{"rendered":"http:\/\/fpga.cool.coocan.jp\/wordpress\/?p=1167"},"modified":"2015-06-25T16:53:19","modified_gmt":"2015-06-25T07:53:19","slug":"pcm%e3%81%af%e3%81%a7%e3%81%8d%e3%81%9f","status":"publish","type":"post","link":"http:\/\/fpga.cool.coocan.jp\/wordpress\/?p=1167","title":{"rendered":"PCM\u306f\u3067\u304d\u305f"},"content":{"rendered":"<p>ZYBO\u57fa\u677f\u5411\u3051\u306eI2S-DAI-DAC\u57fa\u677f\u304c\u7121\u4e8b\u306b\u52d5\u304d\u307e\u3057\u305f\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" alt=\"\" src=\"http:\/\/fpga.cool.coocan.jp\/electrart\/image201506\/soc-sys.jpg\" width=\"480\" height=\"679\" \/><\/p>\n<p>DAC\u57fa\u677f\u5074\u306b2\u3064\u306e\u767a\u632f\u5668\u3092\u8f09\u305b\u3066\u3044\u3066\u3001\u518d\u751f\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u306e\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u5468\u6ce2\u6570\u304c44.1kHz\u306e\u500d\u6570\u304b\u300148kHz\u306e\u500d\u6570\u304b\u306b\u5fdc\u3058\u30662\u3064\u306e\u767a\u632f\u5668\u51fa\u529b(22.5792MHz\/24.576MHz)\u306e\u30a4\u30cd\u30fc\u30d6\u30eb\u30fb\u30c7\u30a3\u30bb\u30fc\u30d6\u30eb\u3092\u5207\u308a\u66ff\u3048\u3066ZYBO\u5074\u306eI2S\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u56de\u8def\u3068\u3001DAC\u306e\u53cc\u65b9\u306b\u4f9b\u7d66\u3059\u308b\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u5f53\u9762\u3001PCM\u4fe1\u53f7\u518d\u751f\u306a\u3089MPD\u304b\u3089\u3053\u306e\u300c\u51fa\u529b\u5148\u300d\u3078\u4fe1\u53f7\u3092\u6d41\u3057\u3066\u697d\u3057\u3080\u3053\u3068\u304c\u3067\u304d\u305d\u3046\u3067\u3059\u3002<\/p>\n<p>\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u3001ZYBO\u306b\u642d\u8f09\u3055\u308c\u305fZYNQ\u306eAXI\u30d0\u30b9\u306b\u3076\u3089\u4e0b\u304c\u308b\u5f62\u306eDSD\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3092\u30a4\u30f3\u30d7\u30ea\u30e1\u30f3\u30c8\u3057\u3001I2S-DAI-DAC\u57fa\u677f\u306bDSD\u30d5\u30a1\u30a4\u30eb\u3082\u51fa\u529b\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u3068\u3053\u308d\u3067\u3001ZYBO\u4e0a\u3067\u3053\u306eZYNQ\u30d7\u30ed\u30bb\u30c3\u30b5\u306b\u7e4b\u304c\u3063\u3066\u3044\u308b\u300c\u30ab\u30cb\u300d\u3055\u3093\u306f&#8221;realtek,RTL8211E&#8221;\u3067\u3059\u3002\u304d\u3061\u3093\u3068\u901f\u5ea6\u3092\u691c\u8a3c\u3057\u3066\u3044\u307e\u305b\u3093\u304c\u3001USDA_MINI\u57fa\u677f\u3092\u3064\u306a\u3044\u3067\u3001nfs\u30de\u30a6\u30f3\u30c8\u3057\u305fQNAP\u306eTS119\u304b\u3089DSD11.2MHz\u306e\u30d5\u30a1\u30a4\u30eb\u309230\u5206\u9023\u7d9a\u3067\u518d\u751f\u3057\u305f\u3068\u3053\u308d\u3001\u5e78\u904b\u306b\u3082\u97f3\u98db\u3073\u304c\u6c17\u306b\u306a\u308b\u3088\u3046\u306a\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u30ae\u30ac\u30d3\u30c3\u30c8\u306e\u304a\u304b\u3052\uff1f<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ZYBO\u57fa\u677f\u5411\u3051\u306eI2S-DAI-DAC\u57fa\u677f\u304c\u7121\u4e8b\u306b\u52d5\u304d\u307e\u3057\u305f\u3002 DAC\u57fa\u677f\u5074\u306b2\u3064\u306e\u767a\u632f\u5668\u3092\u8f09\u305b\u3066\u3044\u3066\u3001\u518d\u751f\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u306e\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u5468\u6ce2\u6570\u304c44.1kHz\u306e\u500d\u6570\u304b\u300148kHz\u306e\u500d\u6570\u304b\u306b\u5fdc\u3058\u30662\u3064\u306e\u767a\u632f\u5668\u51fa\u529b(22.5 &hellip; 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