Audio Monitoring In A MADI Muddy Field

UK broadcast and MADI specialist Aspen Media, is once again servicing the needs of the OB industry during the festival season with a string of products that will help to identify frequently changing channel allocations or test connections and analyse data in the not unlikely event that there are problems with the MADI stream while the truck is buried up to its axles in a muddy field.

The Bel BM-A2-64MADI allows an engineer to monitor, status check and listen to all 64 audio channels of a MADI bit stream via the integral speakers, external speakers or headphones, while the onboard SRCs decouple the truck from the external stage systems and take care of any mismatch in sample rate.

32 'Audio Present' LEDs and bargraph meters show the L+R signal level for every channel pair with each pair selectable by the rotary encoder for hi-res metering and monitoring.

BM-A2-64MADI converts MADI data to 32 AES balanced and unbalanced pairs as well as providing MADI format conversion of coax<>fibre.

Adding a Bel MADI-SWITCH allows the BM-A2-64MADI to easily monitor up to 8 MADI streams.

The DirectOut KYRA is a 1U audio monitoring device that can create a personal monitor mix of up to 8 mono or 4 stereo channels of an optical or coaxial MADI signal. Vital for OBs, broadcast, PA installations or anywhere MADI is the audio transport standard of choice.

Bargraphs on the front panel show one stereo or two mono input channels and the overall mix may be monitored via headphones or internal speakers.

Adopting MADI as a monitor ring considerably reduces install costs, increases the number of sources available at each operator position and allows every operator to easily select their sources and adjust levels themselves.

ANNA-LISA from DirectOut is a small, handheld and low cost, battery powered MADI signal analyser and generator that connects via BNC or fibre SFP. It rapidly confirms the integrity of any kind of MADI signal and identifies the true nature of any problems occurring in the MADI transmission or transport.

Tests include: sample rate, signal amplitude, jitter and eye pattern. The results are displayed on the unit as easy to read "traffic light" style LEDs. A more in-depth analysis than the simple yes/no indication, will be available soon by connecting ANNA-LISA to a PC or Mac, tablet or phone using USB or Bluetooth.

The multi-standard MADI test signal generator caters for all channel count/frame rate standards and 48/44.1 kHz sample rates and three generator presets are provided for storage of different MADI test signal formats and rapid generator re-configuration.

www.aspen-madi.com

www.aspen-media.com

(JP)