Bel Digital Audio has added a loudness monitoring option to the latest standards on all eight variants of its 1U and 2U 16-channel HD monitor/de-embedder. Each of the monitors now has the ability to choose between monitoring loudness by momentary, 3s, 10s, integrated and dynamic ranges.  As a consequence, all units comply with both ITU-R BS.1770-2 and ITU-R BS.1771-1.


Loudness metering can be displayed in four ways, chosen from the easily navigated menu, with each showing different combinations of loudness measures. This enables the user to choose which measurements they prefer to show more prominently. The units are configured quickly via a rotary control that scrolls through menu options and settings. The menu system need only be accessed once during set-up, and from that point forward all the required options will be displayed. Loudness metering is accessed through the same intuitive system and each of the four monitoring options can be displayed permanently or called up as required.

Visible monitoring of each channel of audio is by high-resolution bargraph meters, with adjustable colour transition points featuring a peak-hold facility. Four user assignable scales and ballistics are also available. Audible monitoring is via magnetically shielded speakers.

All units feature medical grade internal power supplies for reliability, whilst also removing the need for any external power adapters. There is also the facility for SDI re-clocking and loop-through on each device.

More: www.beldigital.com

Grammy Audio Network Schematic

Return to Sound for the 2012 Grammys feature...
Algorithms to Measure Audio Programme Loudness and True-Peak Audio Level

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Building commercial and technical support for its growing base and realisation of our expansion plans, Netherlands-based loudspeaker manufacturing specialist Alcons Audio is invinting applications for the following positions:

Audio DSP developer
Firmware developer
Linux developer
Sales Support Engineer, Germany

More information and application details are available from Alcons Audio.

More: info@alconsaudio.de


Clear-Com has released the Linq series of comms interfaces, enabling connection of two-wire partyline with call signalling and four-wire audio over LAN, WAN or Internet IP infrastructures.

Clear-Com LinqBased on Clear-Com’s IV-Core technology, Linq is available in two-wire (Linq-2W2) or four-wire (Linq-4W2) options. The Linq-2W2 is both Clear-Com and RTS TW compatible. The Linq-4W2 can interconnect with devices, such as analogue ports of any matrix intercom system, analog telephone circuits, two-way radio gateways and audio consoles. A maximum of six Linq IP interfaces can be linked together in any 2-wire or 4-wire combination.

Linq uses the Opus high-quality audio codec, allowing bitrate, bandwidth and delay to be changed quickly without introducing distortion or discontinuity in the audio. As a low audio latency communication link, Linq can be used for natural intercom conversation, networked music performances and for audio signals that are transported via different facilities (transmission sync).

The creation of virtual partylines within a linked group is an exclusive feature. Channels from any of the six devices in the network can be linked to create common virtual partylines. At least two channels must be associated to each other. Linq uses a touch-friendly web-based user interface to configure, control and monitor any device within a linked group.

‘Linq is a simple yet significant development that enables users to expand their remote communications quickly and easily,’ says Clear-Com Product Manager, Stephen Sandford.

More: www.clearcom.com

Calrec Networking Primer

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BroaMan MUX22 MadiSpecialising in custom solutions for broadcasters with SD/HD/3G video transport requirements, BroaMan has extended its MUX22 series with the release of the MUX22 Madi.

Following the original MUX22 video, audio and intercom module – which forms a central part of BroaMan’s scalable and protocol independent philosophy,  offering up to 16 3G/HD/SD-SDI I/O configurable video ports with built-in CWDM multiplexer – the MUX22 Madi makes the platform compatible with the industry-standard Madi audio format. As with all MUX22 devices the MUX22 Madi supports up to eight video channels with a selectable number of dual inputs and dual outputs. It is also equipped with a Sync Board for Video Tri/Bi-Level or Audio Word Clock sync, either with RS485 or GPIO ports, and can provide fibre tunnels for any third-party products.

The new Madi board is populated with four duplex SC Madi ports, offering 256 inputs and 256 outputs, and each Madi port is fully AES10 compatible, offering 56 or 64-channel Madi I/O. The audio engine is equipped with a single channel router, enabling routing from/to any Madi stream, either within the same device or between the remote Optocore, BroaMan or ProGrid devices.

‘The strategic importance of this product is that it will allow great benefit to the broadcast industry because with the digital audio option in addition to the analogue ones, it allows a complete and transparent video, audio and control transport solution based on open platforms,’ says BroaMan MD, Tine Helmle. ‘Therefore, any device from any brand can now be networked through MUX22, and any style video, audio, intercom, lighting or ethernet control. We have already taken first orders, including one from Denmon.’

The Madi implementation is bit transparent and passes third-party control protocols. Also through the MUX22 environment, Optocore’s mic preamps can be controlled from many third-party devices, either with direct access (DiGiCo) or through the company’s Emulation Modes (Lawo, Studer, Soundcraft, SSL and Yamaha).

MUX22 Madi can be used as a point-to-point system with any other MUX22 device, or in a star or ring topology with Route66 devices as part of a larger routing solution.

More: www.broaman.com


Nugen Audio Visualizer Nugen Audio has released a ‘significant’ update to its Visualizer audio analysis suite, adding support for Avid’s AAX 64-bit format for both PC and Mac, as well as the VST3 standard for digital audio plug-ins.

Visualizer provides audio analysis for recording, mixing and mastering through a reference tools. With the latest upgrade, Visualizer is among the first to gain compatibility with Avid Pro Tools 11.

For recording, Visualizer offers tools for calibration, setting levels, signal path checking, noise minimisation, and many other audio tasks. At the mixing desk, engineers can use Visualizer for tasks such as low-end control, masking, hidden frequencies, and stereo placement, among many others. For mastering, Visualizer supports a wide range of views such as stereo spread, phase relationships, and EQ distribution.

‘When we launched Visualizer in 2005, it quickly gained the attention of producers and helped Nugen Audio build its brand in the audio production industry,’ says Creative Director, Jon Schorah. ‘The new update is the latest example of how we’re continually adapting our products to meet our customers’ evolving requirements; for instance, 64-bit AAX compatibility provides future-proofing for our many customers who rely on Avid’s editing software.’

More: www.nugenaudio.com


Madi BridgeSolid State Logic has extended the feature set of its Madi Bridge, Madi-to-Dante IP Audio Network interface. Part of the company’s Network I/O range, Madi-Bridge reckons to be the first fully broadcast-ready interface between Madi and Dante.

Madi-Bridge provides an interface between a Dante IP audio network and Madi, supporting 64 channels per Bridge at 48kHz or 32 channels at 96kHz, with redundant Madi, IP Network ports and PSU. In addition to the built-in clock redundancy in Dante controller, the Madi-Bridge includes a pair of sync inputs for use as a self-redundant Dante Grand Master clock. The unit can synchronise to video sync, tri-level or black and burst, word clock, Madi or PTP network sync.

The unit also features a front panel headphone socket with level control and built-in headphone monitor routing to replace traditional patchbay routing and fault-finding functionality with equivalents in the IP audio domain. GPIO connections allow for transfer of tally info and switching functions across the network with the audio.

Other features include bi-directional 44.1kHAz/48kHz/88.2kHz/96kHz sample rate conversion and a new Split Mode, which allows the pair of Madi connectors to be used independently (rather than in their usual redundant mode) for bi-directional split/combine operation. This can be used in a number of ways, for example, two 32 channel 96kHz Madi feeds can be combined to form one 64 channel 48kHz Dante stream or an asynchronous, but same sample rate stage can be connected to multiple OB vehicles.

Other new features include a Lock mode, enabling an admin user to lock all functionality except the front panel confidence monitoring, and the ability to toggle the screen between Monitor Matrix view and the Channel Name of the device currently being monitored in Monitor Mode.

More: www.solidstatelogic.com

SSL Live at Chess
Requiring the largest use of SSL Live mixing systems to date, the recent World Chess Olympiad was accompanied by a full concert version of the musical, Chess, in Tromsø, Norway The production called on the Norwegian Arctic Philharmonic Orchestra, a choir and an ensemble of leading Norwegian musical performers, with three SSL Live consoles for the sound mixes.

Supplied by Bary Sales in Oslo, the FOH and monitor consoles shared 64 inputs from the band and soloists, while the third was used to submix 86 orchestra channels down to six stereo stems.

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