{"id":141,"date":"2015-09-01T15:36:00","date_gmt":"2015-09-01T15:36:00","guid":{"rendered":"http:\/\/machineryequipmentonline.com\/video-equipment\/uncategorized\/tv-sound-mono-and-nicamnicam-reception\/"},"modified":"2015-09-01T15:36:00","modified_gmt":"2015-09-01T15:36:00","slug":"tv-sound-mono-and-nicamnicam-reception","status":"publish","type":"post","link":"http:\/\/machineryequipmentonline.com\/video-equipment\/tv-sound-mono-and-nicamnicam-reception\/","title":{"rendered":"TV sound, mono and NICAM:NICAM reception"},"content":{"rendered":"<div class=\"nsuhz6a0dbe5075783\" ><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.nsuhz6a0dbe5075783 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.nsuhz6a0dbe5075783 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.nsuhz6a0dbe5075783 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.nsuhz6a0dbe5075783 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.nsuhz6a0dbe5075783 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<h3 align=\"justify\">NICAM reception<\/h3>\n<p align=\"justify\">At the receiver, the tuner converts the vision carrier and the FM sound inter-carrier to an IF of 39.5 and 33.5 MHz, respectively. The NICAM carrier is 6.552 MHz away from the vision carrier, so it is converted to an interme- diate frequency (IF) of 39.5 &#8211; 6.552 = 32.948 MHz (normally referred to as 32.95 MHz.  <\/p>\n<p align=\"justify\">This is demodulated by a DQPSK detector and applied to the NICAM decoder, which reverses the processes carried out at the transmitter to recreate the 14-bit sample code words for each channel. This is then followed by a digital-to-analogue converter (DAC), which reproduces the original analogue two-channel, left and right, sound waveforms.  <\/p>\n<p align=\"justify\">The basic elements of NICAM sound reception in a TV receiver are shown in Figure 17.9. Following the tuner, a special surface acoustic wave  <\/p><div class=\"rxboz6a0dbe5075989\" ><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.rxboz6a0dbe5075989 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.rxboz6a0dbe5075989 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.rxboz6a0dbe5075989 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.rxboz6a0dbe5075989 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.rxboz6a0dbe5075989 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"bibtw6a0dbe50758ac\" ><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.bibtw6a0dbe50758ac {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.bibtw6a0dbe50758ac {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.bibtw6a0dbe50758ac {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.bibtw6a0dbe50758ac {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.bibtw6a0dbe50758ac {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n\n<p align=\"justify\"><a href=\"http:\/\/lh3.googleusercontent.com\/-ZJOWSnjzAHw\/VeXFmmip4uI\/AAAAAAAB6II\/GH-Iho4QqMw\/s1600-h\/Television-and-Video-Technology-0067%25255B2%25255D.jpg\"><img decoding=\"async\" loading=\"lazy\" style=\"background-image: none; border-right-width: 0px; margin: 0px auto; padding-left: 0px; padding-right: 0px; display: block; float: none; border-top-width: 0px; border-bottom-width: 0px; border-left-width: 0px; padding-top: 0px\" title=\"Television and Video Technology-0067\" border=\"0\" alt=\"Television and Video Technology-0067\" src=\"http:\/\/lh3.googleusercontent.com\/-j0pOYV_e9cA\/VeXF7BWg0hI\/AAAAAAAB6Jc\/ZFAb567dEjA\/Television-and-Video-Technology-0067.jpg?imgmax=800\" width=\"450\" height=\"127\" \/><\/a>  <\/p>\n<p align=\"justify\">(SAW) filter provides separate vision and sound IF outputs. A sharp cut- off removes the two SIFs, 33.5 MHz for mono and 32.95 MHz for NICAM, from the 39.5 MHz vision carrier. The SAW filter provides a separate path for the FM and NICAM carrier IFs. In the sound IF demodulator, the  <\/p>\n<p align=\"justify\">39.5 MHz pilot frequency is used to beat with the FM SIF and with the NICAM IF to produce 6 MHz FM and 6.552 MHz DQPSK carriers. Sharply tuned filters are then used to separate the two sound carriers. The FM car- rier goes to a conventional FM processing channel for mono sound and the 6.552 MHz NICAM phase-modulated carrier goes to the NICAM process- ing section. This consists of three basic parts. The DQPSK decoder recovers the 728 kbps serial data stream from the 6.552 MHz carrier. The NICAM decoder descrambles, de-interleaves, corrects and expands the data stream back into 14-bit sample code words. Finally, the DAC repro- duces the original analogue signals for each channel.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NICAM reception At the receiver, the tuner converts the vision carrier and the FM sound inter-carrier to an IF of 39.5 and 33.5 MHz, respectively. The NICAM carrier is 6.552 MHz away from the vision carrier, so it is converted to an interme- diate frequency (IF) of 39.5 &#8211; 6.552 = 32.948 MHz (normally referred [&hellip;]<br \/><a href=\"http:\/\/machineryequipmentonline.com\/video-equipment\/tv-sound-mono-and-nicamnicam-reception\/\" 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":1292,"_links":{"self":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/141"}],"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=141"}],"version-history":[{"count":0,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/141\/revisions"}],"wp:attachment":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/media?parent=141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/categories?post=141"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/tags?post=141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}