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Five to Two for Great Sound

New MAGIC SP2 5.1 to Stereo Downmix System has its premiere at the IBC

At this year's IBC in Amsterdam, AVT introduced its new MAGIC SP2 Downmix System. The system provides an automatic 5.1 to Stereo Downmix, which guarantees an often required compatibility to two channel stereo or mono sound formats when the increasingly widespread multi channel sound is used.

IRT Downmix Algorithm & ITU Downmix Standard

The key component of the MAGIC SP2 is the new Downmix algorithm from IRT (Institut für Rundfunktechnik) in Munich, Germany. This algorithm avoids disturbing effects, which could influence the technical quality as well as artistic aspects of the production, or it effectively compensates for them. In addition to the IRT Algorithm the classic ITU-R BS.775 Downmix Standard can also be selected. The parameters are freely programmable. Due to the use of powerful signal processors, a fast and therefore, latency-optimised implementation is possible.

Hence, the system can be operated under real time conditions.

Presets and Variable Delay

The MAGIC SP2 Downmix System also considers artistic aspects and for this purpose provides various different presets (e.g. for music, radio drama, etc.). Additionally, the system has a configurable delay element to allow adjustment for different applications (e.g. for lip synchronisation in TV productions

Analogue & Digital Audio Interfaces

MAGIC SP2 has 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 use. The stereo downmix output signal is simultaneously

available via analogue XLR Audio interfaces or - to provide optimum quality - via a digital AES3 interface. Headphones can be connected at the front side of the unit for monitoring the downmix signals and the multi channel Audio inputs. All digital AES3 Audio input interfaces have separate sample rate converters. Also, synchronisation with an external studio clock is also possible.

SNMP V2

For integrating the system into a network management system the SNMP function can be used. Currently SNMP V2 is supported. Additionally, GPIO contacts (relay or TTL) can be used

for control and monitoring.

Availability: End of 2009