{"id":1944,"date":"2020-06-09T15:07:31","date_gmt":"2020-06-09T21:07:31","guid":{"rendered":"http:\/\/pippintech.com\/?p=1944"},"modified":"2020-06-12T09:02:46","modified_gmt":"2020-06-12T15:02:46","slug":"case-study-virtual-newsmixer","status":"publish","type":"post","link":"https:\/\/pippintech.com\/index.php\/2020\/06\/09\/case-study-virtual-newsmixer\/","title":{"rendered":"Case Study: Virtual NewsMixer"},"content":{"rendered":"\t\t
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The Challenge<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Replace an older physical newsroom mixer with a virtual option, utilizing as much existing equipment on hand.\u00a0 \u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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The Gear<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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With an Axia Audio network present in the facility (Master Control houses an AXIA Element with StudioEngine), an open port on the AoIP network available and a Mixed Signal xNode that could be assigned to the relatively light local i\/o requirements of the NewsBooth, on the surface this was a very cut and dried application for Axia’s IP-Tablet product.\u00a0 Licensing the IP-Tablet Core software and then unlocking control of the xNode would allow us to build a customized virtual mixer, record bus, and digital VU metering for the channels in question.\u00a0 A second NIC was added to the PC which would host the IP-Tablet as it would still be used on the office network to run the newsroom software.\u00a0 The curveball came with the requirement to have bi-directional talkback between the Control Room and the NewsBooth.\u00a0 With Axia Pathfinder in place, that would be a few quick logic settings, the mixer itself could actually be built within Pathfinder and deployed to the desktop of the NewsBooth computer as an executable.\u00a0 However, Pathfinder was not in-situ and not in budget, so… Terry and Grant got to work!<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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The Solution<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Building out the IP-Tablet mixer and sorting out the layout is a relatively easy drag and drop process.\u00a0
As the channel numbers on the xNode appeared when displayed on the channel strips (and could cause potential confusion for the end user), with some creative formatting Grant was able to edit the text colour to black so the channel numbers ‘disappeared’ into the background colour.\u00a0 We\u00a0were then able to then create user friendly labels to describe what specifically was assigned to each channel.\u00a0 From left to right our faders are:<\/p>

  • Mic<\/strong> – ingested via the XLR input on the mixed signal xNode.<\/li>
  • PC Audio<\/strong> – IP Driver connection to the local NewsBooth PC.\u00a0 This is brought into one of the virtual input sources available on the xNode.\u00a0 This could also be accomplished via the xNode’s line level input.\u00a0\u00a0<\/li>
  • Phone<\/strong> – connect to the hybrid.\u00a0 Mix minus is built out utilizing the xNode’s internal source\/destination routing matrix.\u00a0 We have the ability to rout the microphone to the backfeed.\u00a0\u00a0<\/li>
  • MCR<\/strong> – this is the master control PGM audio feed.\u00a0 It is also the channel where the Booth announcer talkback will be present.\u00a0 The NewsBooth has the ability to listen to the studio feed, as well as send the booth audio to the record bus if there is a guest or interview which may require archiving.\u00a0\u00a0<\/li><\/ul>

    As for the PGM bus assignments:<\/p>

    • PGM 1 (blue)<\/strong> – adds to the aggregated Mixer output which can be selected in the control room.<\/li>
    • PGM 2 (red) <\/strong>– feeds the record bus to the local PC.\u00a0<\/li>
    • PGM 1 (green)<\/strong> – allows for local monitoring of the control room feed, but does not loop “back to the booth” (hence colour being used to differentiate its function).\u00a0\u00a0\u00a0<\/b><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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      Talkback<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      Pathfinder would simplify the logic of this process immensely.\u00a0 However, utilizing the external Studio talkback of the control room StudioEngine, and the 2xGPIO ports of the NewsBooth mixed signal xNode (and Terry implementing a custom soldered DB-15 connector to bridge a connection) we are able to build out a TB interface within the IP-Tablet mixer.\u00a0 The green “TB to MCR” button on the NewsBooth mixer offers a hold-to-talk connection which routes the microphone in the NewsBooth to the cue speaker in Master Control.\u00a0 Heading the other way, if the NewsMixer has the MCR channel up and active they can monitor the station PGM feed which will duck and have the Booth announcer’s voice audible when the announcer depresses the ‘Talk to Studio’ button on their Element console.\u00a0 Depressing that button in the Control Room also triggers a GPIO indicator state being monitored on the NewsMixer (labelled MCR TB on the mixer), so in the event the News reader is cutting audio locally and isn’t monitoring the MCR feed which would carry the talkback audio from the booth, they will still have a visual notification that the booth is trying to get their attention, and can turn on the MCR channel to listen at an opportunity which is convenient to their workflow.\u00a0\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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      The Final Product<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      With IP-Tablet we have the ability to alter the background image (we created a very classic looking textured slate look for this one) and add a station logo.\u00a0 There’s also the ability to do further customization with the button colours, along with some of the text and faders to match station branding.\u00a0 The layout is saved locally to the computer which runs the IP-Tablet executable as a .json file so the work put into one mixer can be copied and easily replicated on numerous other workstations with minimal changes required in the back-end to select and route the connections to that specific xNode.\u00a0 We have a 3 source mixer in this particular implementation, there is potential to have a couple more faders accessible depending on their input type (line, AES, Livewire) if required – the ceiling will be the number of sources and destinations in the xNode’s routing matrix.\u00a0 The size of the mixer can be adjusted to match your monitor, as well as where the mixer is statically placed on the desktop.\u00a0 Our user just so happened to have a spare monitor they decided to use as an extended desktop to their primary news computer screen, so the mixer will live solely on that display.\u00a0 Even better, that monitor is a touchscreen!\u00a0 As more and more AoIP and virtualized gear emerges in the broadcast industry, the possibilities and changes to studio design continue to open up.\u00a0\u00a0<\/p>

      Have an idea for your studio you want to run by us?\u00a0 Want to dig more into the specifics of what we built for this project?\u00a0 Our name is Pippin Technical Service<\/strong><\/em> for a reason.\u00a0 Drop us a line, we’d love to discuss your project and how we may be of assistance.\u00a0\u00a0<\/p>

      \u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

      The Challenge Replace an older physical newsroom mixer with a virtual option, utilizing as much existing equipment on hand.    The Gear With an Axia Audio network present in the facility (Master Control houses an AXIA Element with StudioEngine), an open port on the AoIP network available and a Mixed Signal xNode that could be […]<\/p>\n","protected":false},"author":1,"featured_media":1947,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,30],"tags":[],"_links":{"self":[{"href":"https:\/\/pippintech.com\/index.php\/wp-json\/wp\/v2\/posts\/1944"}],"collection":[{"href":"https:\/\/pippintech.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pippintech.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pippintech.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pippintech.com\/index.php\/wp-json\/wp\/v2\/comments?post=1944"}],"version-history":[{"count":9,"href":"https:\/\/pippintech.com\/index.php\/wp-json\/wp\/v2\/posts\/1944\/revisions"}],"predecessor-version":[{"id":1957,"href":"https:\/\/pippintech.com\/index.php\/wp-json\/wp\/v2\/posts\/1944\/revisions\/1957"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pippintech.com\/index.php\/wp-json\/wp\/v2\/media\/1947"}],"wp:attachment":[{"href":"https:\/\/pippintech.com\/index.php\/wp-json\/wp\/v2\/media?parent=1944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pippintech.com\/index.php\/wp-json\/wp\/v2\/categories?post=1944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pippintech.com\/index.php\/wp-json\/wp\/v2\/tags?post=1944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}