AVT shows new POTS and VoIP Telephone Hybrid

The digital telephone hybrid MAGIC TH6 incorporates six POTS line interfaces, two analogue Audio interfaces and four digital Audio interfaces. As an option MAGIC TH6 can run as a VoIP Telephone Hybrid using the LAN interface as line interface. All six callers can be put on separate Audio lines for the connection to the mixing console if required. To guarantee optimum speech quality an independent digital Echo Canceller, an Automatic Gain Control and an Expander are available for each caller line. The Audio lines of the MAGIC TH6 Telephone Hybrid can also be assigned with PRETALK, HOLD and ON AIR status. Three operating modes can be configured: The One-fader operating mode, the Twofaders operating mode and the Six-faders operating mode. Depending on the fader mode, one, two or six ON AIR Audio lines are separately or in conference available to the presenter.

The system can be controlled and configured via a user-friendly Windows PC Software. Optionally, the MAGIC TH6 Software can be installed on up to three additional PCs. In this way MAGIC TH6 can be used for e.g. two studios or for presenter-screener applications. In addition to six GPIO contacts, four relays and two RS232 interfaces can be used for system Press Information operation. The MAGIC TH6 Keypad allows an external control of the system instead of a PC or in parallel with a PC.

Furthermore, AVT shows its new MAGIC SP2 5.1 to Stereo Downmix System which provides an automatic downmix of 5.1 surround signals to Stereo signals. The MAGIC SP2 uses a new downmix algorithm developed by the Institut für Rundfunktechnik (IRT) in Munich, Germany, as key component. This algorithm avoids distracting effects, which have been sometimes caused by other downmix methods so far, or compensates them very effectively. Additionally, the ITU-R BS.775 downmix standard is also supported. For consideration of artistic aspects different presets (e.g. for pop, classic, radio drama etc.) are available. The system has a configurable delay element for the adjustment to different applications (e.g. for lip synchronisation at the TV) with a minimum delay of 40msec. MAGIC SP2 provides three separate digital AES3 Audio interfaces for the input of the 5.1 multi channel sound which are additionally looped through to three digital AES3 outputs for further usage. The output of the stereo downmix sound signal is available at the analogue XLR Audio interfaces or - to guarantee optimum quality - at a digital AES3 interface.

For monitoring the downmix signal and the multi channel Audio inputs, headphones can be connected at the front side of the unit. For integrating in a network management system the SNMP function can be used. Currently SNMP V2 is supported. In addition to the new products, AVT shows also its MAGIC AC1 XIP Audio Codecs for high quality Audio transmission over ISDN, IP and X.21. As coding algorithms, PCM, G.711, G.722, ISO/MPEG Layer 2 and 3 as well as apt-X and AAC-LD for low-delay-transmissions are available. If the LAN interface is used for Audio over IP, two modes are available: a Leased Line Mode with RTP and a Dial up Mode with SIP which works according to the EBU standard. The latest feature of the MAGIC Audio Codecs is the ISDN Backup function for IP networks.

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