September2013
www.tvbeurope.com
TVBEurope 57 Studer
Introducing the VistaMix
By Paul Watson
THE NEW VistaMix automatic microphone mixing system from Studer is said to get rid of any microphone spill and background noise often heard in unscripted multi-microphone live events such as talk shows, game shows and discussion panels, which leads to decreased intelligibility and unpleasant comb filter effects (phase distortion). According to Studer, VistaMix is the antidote to all of these problems and is presented via a software upgrade for all of the manufacturer’s Vista digital mixing consoles. VistaMix removes the need for an
quickly lead to disturbing changes of the total ambience/noise level in the mix. According to the manufacturer,
VistaMix essentially mimics the action of a human operator by increasing gain for ‘talking’ mics and reducing gain for all others – but it does it very quickly and keeps the amount of total gain constant, so a clean live mix can be created. VistaMix also
Tuning out: The new VistaMix automatic microphone mixing UI
works for news operations: when multiple mics are installed in the studio but the desk operator is not sure which ones will be used, it switches on only those mics that are in use. In addition,
VistaMix source
operator to manually adjust all the faders all the time, leaving the microphones of talking participants open, while closing the microphones of silent participants. Without this facility, Studer says, the reaction time of a human operator will often result in audible fade-ins of people who start talking rather unexpectedly; and changes in fader positions can
Universität Braunschweig Overcoming mobile TV overloads By Adrian Pennington
THE FIRST technology to embed LTE data in a data stream transmitted from a terrestrial TV transmitter using DVB-T2 is being demonstrated at the Future Zone. LTE, and its successor LTE-Advanced
(LTE-A), are the new standard for mobile radio communications and offer faster internet access and support for point-to- multipoint services such as live TV through the use of eMBMS (evolved Multimedia Broadcast Multicast Service). The fly in the ointment is that eMBMS is bound to the dense cellular infrastructure of typical mobile communication networks. Technische Universität Braunschweig has found a way to overcome these limitations by providing a wide coverage area, ideally jointly operated by national cell network operators. The Tower Overlay network is explained
by Prof. Dr.-Ing. Ulrich Reimers, VP strategic development and technology: “Imagine that during the Olympic Games
2016 the four national mobile operators in Germany need to stream live video across their networks consisting of many thousand network cells four times in parallel. These streams would need to accommodate the video quality required by tablets or smartphones, resulting in a data rate so high that the infrastructure would be seriously loaded or even overloaded. “Our demonstration consists of DVB-T2 signal in which we embed LTE data. This permits network operators to offload live video and other popular content to broadcast-type networks and avoid overloading their infrastructure during popular events.” The DVB-T2 transmission is received by a classic TV receiver — in order to show that TV and LTE content can be delivered side- by-side in one data stream. Next to the TV receiver a tablet is being shown on which the same (or a different video) can be viewed that also comes via the broadcast channel. 8.G35
channels may also be mix minus (N–X) owners; and each source channel has a weight control, which provides two possibilities: firstly, it allows the desk operator to add weight, or priority, to the main presenter such that if required he can ‘talk over’ the guests or contestants; and secondly, it allows the desk operator to give more gain in the mix to any contributors who have weak voices or are too far from their microphones. 8.D60
Safe conduct for content IBC2013 Show Preview
Eyeheight By Michael Burns
MAKING AN IBC debut is Eyeheight’s complianceSuiteFCX, a complete plug-in legaliser, safe-area generator and graphic measurement toolset for Apple Final Cut Pro X. Eyeheight claimed that complianceSuiteFCX allows true file-based workflows from concept to playout by enabling users to verify and conform their content prior to submission to any file-based quality control system. All this takes place from within a familiar Final Cut environment and allows extensive user and administrator customisation. The legaliser is designed for use with the high-end video source files used for broadcast content production. It supports any combination of file formats and source colour-space available in Final Cut Pro X. Capabilities include composite, RGB, RGB-plus-Y and simultaneous composite-plus-RGB legalising, all with user-adjustable soft clipping at high and low thresholds. High- precision colour-space conversion allows accurate limiting to ensure gamut compliance while keeping the full gamut available for creative use. Eyeheight’s proprietary clobbeRing non-linear predictive filtering process further reduces visible luminance overshoots common on computer- generated or highly graded content and significantly reduces the risk of content rejection.
Legal eyes: Eyeheight’s legaliser runs within a familiar environment for FCP X users
complianceSuiteFCX users can
select from an extensive range of presets or work in custom mode which gives full access to 15 configurable parameters. An integral safe area generator
provides an extensive range of broadcast safe area markers covering all the requirements for SD, HD and 2K, including 16:9 and 14:9 requirements in SD. Also integrated into
complianceSuiteFCX is a point-and- click measurement tool allowing text height measurement for advertising compliance. The measurement tool supports 4:3 and 16:9 PAL and NTSC as well as square-pixel HD formats. 8.B97
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