AudioMedia - March 2009 - (Page 46) LOUDNESS Following on from last month's Limiting Loudness feature, STEPHEN BENNETT details the products that will help you comply with the new TV and advertising loudness regulations. OUDNESS Monitoring A quick roundup of the products that will help you to comply with the new standards. and acoustic criteria. The 31900/31960 series is a complete sound analysis solution that conforms to the latest BCAP regulations. It’s an eight-channel surround sound meter and analyser, monitor controller and router. It comes in two formats – a 19” rack mount unit with desktop controller and external VGA display, or a half 19” rack module with TFT for TV/video studios. Its preset management system allows for ultra-fast switching between configurations and I/O setup. The unit features PPM and ITU BS 1771 loudness metering for stereo and surround channels up to a 7.1 format, and a full complement of audio and signal analysing tools including an optional Dolby AC-3 and Dolby E decoder. tion. It is based on a simultaneous combination of an automatic gain control, a Transient Processor for fast changes, and a look-ahead Peak Limiter for continuous unattended control of any programme material. Capable of using any kind of I/O (analogue and digital) sources, as well as SDI, HD/SDI, Dolby 5.1, and all its related metadata, Level Magic is available in a variety of configurations to suit different applications. With up to eight channels available, it can be uniquely configured and remotely controlled via a web interface. Last month we looked at the detail behind the new BCAP rules on relative subjective loudness between television adverts, and between programme and adverts. To provide a more concrete reference than the, "A consistent subject loudness must be maintained" wording, the ITU-R BS1770 algorithm and ITU-R BS1771 requirements were adopted as a reference by which this could be achieved. This month, we present a range of products that actually incorporate those recommendations German company RTW GmbH & Co produces several products that fulfil the requirements of the latest BCAP recommendations. The 10500X is a Digital 2-Channel Peak Programme Meter and ITU BS 1771 Loudness Meter with Audio Vectorscope. Designed for visualising two-channel digital audio on its TFT VGA screen, it’s designed for applications such as broadcast and post production environments. It can be used to measure and display either peak or ITU BS 1771 loudness meters using various display modes. www.junger-audio.com Unveiled at the 2009 AES, DK-Technologies DK-Technologies’ new MSD100C Loudness meter was developed in response to requests from key broadcasters and production houses including SKY, ITV, the BBC, and RAI in Italy. The unit is designed to tackle the issue of the perceived loudness of audio signals and incorporates ITU BS 1770 and BS 1771 recommendations. It can be used in any broadcast or post production facility as a health check during production or prior to transmission. The 10600X is similar to the 10500X but features up to six channels of peak or ITU BS 1771 loudness monitoring, making it ideal for multichannel or surround work. It’s available either as a desktop unit or half width rack module, and sports an additional SPL/Leq bargraph meter. The 11900 provides peak or ITU BS 1771 loudness monitoring for up to eight channels of 5.1, 6.1, and 7.1 multi-channel surround sound. It comes in a 19” rack format with optional VGA TFT monitor, and features a sophisticated 1/6-octave spectrum analyser for the monitoring of programmes based on metrological www.rtw.de Jünger Audio’s Level Magic is an automated audio loudness control system for production and broadcast, which now conforms to the latest ITU-R BS 1770 recommendations. Level Magic uses a sophisticated adaptive level control algorithm that is designed to adjust the level from any source at any time with no pumping, breathing, or distor- 46 AUDIO MEDIA MARCH 2009 http://www.junger-audio.com http://www.rtw.de
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