{"id":401,"date":"2015-08-06T15:33:00","date_gmt":"2015-08-06T15:33:00","guid":{"rendered":"http:\/\/machineryequipmentonline.com\/video-equipment\/uncategorized\/nicam-stereo-soundoverview\/"},"modified":"2015-08-06T15:33:00","modified_gmt":"2015-08-06T15:33:00","slug":"nicam-stereo-soundoverview","status":"publish","type":"post","link":"http:\/\/machineryequipmentonline.com\/video-equipment\/nicam-stereo-soundoverview\/","title":{"rendered":"NICAM STEREO SOUND:OVERVIEW."},"content":{"rendered":"<div class=\"wgxdl6a0dc851e3f39\" ><script type=\"text\/javascript\">\n\tatOptions = {\n\t\t'key' : '61e5902552e2353963d8d2f1bd1f4a8f',\n\t\t'format' : 'iframe',\n\t\t'height' : 250,\n\t\t'width' : 300,\n\t\t'params' : {}\n\t};\n<\/script>\n<script type=\"text\/javascript\" src=\"\/\/www.highperformanceformat.com\/61e5902552e2353963d8d2f1bd1f4a8f\/invoke.js\"><\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.wgxdl6a0dc851e3f39 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.wgxdl6a0dc851e3f39 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.wgxdl6a0dc851e3f39 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.wgxdl6a0dc851e3f39 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.wgxdl6a0dc851e3f39 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<h3 align=\"justify\">NICAM STEREO SOUND<\/h3>\n<p align=\"justify\">Two alternative systems are available in the UK for sound with analogue terrestrial TV transmissions. The longest established is f.m. mono, with a single sound channel on a 6 MHz (system I, UK) or 5.5 MHz (systems B, G) carrier, intercepted by a narrowband ceramic \ufb01lter and treated the same as in an f.m. radio receiver. An alternative and better system, Nicam, is available with many transmissions, carried alongside the mono f.m. signal which is retained for compatibility. <\/p><div class=\"jabaq6a0dc851e4045\" ><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-0778475562755157\"\n     crossorigin=\"anonymous\"><\/script>\n<!-- 300x600 television-and-video -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:300px;height:600px\"\n     data-ad-client=\"ca-pub-0778475562755157\"\n     data-ad-slot=\"6549443290\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.jabaq6a0dc851e4045 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.jabaq6a0dc851e4045 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.jabaq6a0dc851e4045 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.jabaq6a0dc851e4045 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.jabaq6a0dc851e4045 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"qbjun6a0dc851e3fca\" ><script type=\"text\/javascript\">\n\tatOptions = {\n\t\t'key' : '0c1eb4c533eaedb7b996f49a5a4983a9',\n\t\t'format' : 'iframe',\n\t\t'height' : 300,\n\t\t'width' : 160,\n\t\t'params' : {}\n\t};\n<\/script>\n<script type=\"text\/javascript\" src=\"\/\/www.highperformanceformat.com\/0c1eb4c533eaedb7b996f49a5a4983a9\/invoke.js\"><\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.qbjun6a0dc851e3fca {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.qbjun6a0dc851e3fca {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.qbjun6a0dc851e3fca {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.qbjun6a0dc851e3fca {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.qbjun6a0dc851e3fca {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n\n<h3 align=\"justify\">OVERVIEW<\/h3>\n<p align=\"justify\">The Nicam system is a digital one, with data conveyed in phase modulation of a low-level carrier, spaced for system I at 6.552 MHz above the vision carrier. The modulation system adopted is DQPSK (Differentially encoded Quadrature Phase-Shift Keying). The base- band signal (e.g. L and R) is sampled at 32 kHz rate with an initial resolution of 14 bits per sample. A <i>companding <\/i>system is used, with compression to 10 bits per sample in 32-sample (1 ms) blocks. For immunity to interference, parity bits are added and 45 \u00d7 16-bit interleaving is used. The frame format for this system is 728-bit frame length per 1 ms with 8-bit lumped frame-alignment word. The Nicam carrier is radiated at a point 20 dB below the peak vision carrier level. At the receiver the Nicam carrier emerges from the tuner at a frequency of 32.95 MHz. It is selected by a \ufb01lter for passage to the Nicam decoder, whose \ufb01rst section is a DQPSK demodulator. Emerging from that as a datastream, the Nicam signal is progressively descrambled, de-interleaved, error-corrected, D\u2212A converted and \ufb01ltered. The baseband signals thus derived are ampli\ufb01ed and passed out to loudspeakers.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NICAM STEREO SOUND Two alternative systems are available in the UK for sound with analogue terrestrial TV transmissions. The longest established is f.m. mono, with a single sound channel on a 6 MHz (system I, UK) or 5.5 MHz (systems B, G) carrier, intercepted by a narrowband ceramic \ufb01lter and treated the same as in [&hellip;]<br \/><a href=\"http:\/\/machineryequipmentonline.com\/video-equipment\/nicam-stereo-soundoverview\/\" class=\"more-link\" >Continue reading&#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"aioseo_notices":[],"views":633,"_links":{"self":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/401"}],"collection":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/comments?post=401"}],"version-history":[{"count":0,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/401\/revisions"}],"wp:attachment":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/media?parent=401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/categories?post=401"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/tags?post=401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}