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DiGiCo Launches DMI-AMM Automatic Mic Mixing Card For S-Series Consoles

New products for InfoComm also include V2.2 software upgrade for S-Series consoles, as well as the new DMI-ME card for personal monitor mixing.

By PSW Staff June 6, 2018

DiGiCo's new DMI-AMM (Automatic Mic Mixing) card

DiGiCo (InfoComm stand C746 – Group One Ltd.) announces the launch of its new DMI-AMM (Automatic Mic Mixing) card, which allows up to 48 channels of automatic mic mixing on any S-Series console. Designed in direct response to requests from the corporate market, the DMI-AMM will benefit any production where complex vocal mic setups are in use.

DiGiCo has also announced the new V2.2 software upgrade for S-Series consoles, which incorporates a number of features, as well as the new DMI-ME card.

Insertable on any input channel, be it local or rack I/O, the DMI-AMM is designed to assist engineers with multiple spoken voices. It is incorporated into the console’s user interface, allowing a continuous workflow that does not hinder the operation of the console.

The DMI-AMM system works by automatically managing several live microphones in unpredictable dialogue situations. When one person speaks, that microphone’s gain level fades up instantly, while the other microphone gains are reduced. When the speaker pauses, all microphone levels will adjust to medium gain to collectively match the level of one microphone at full gain. The resulting effect will be as if all speakers are sharing one microphone.

The AMM does this by using the highly regarded “Shared Unity Gain” principle, which means that when several people speak at once, the gain is shared. A “weighting” control allows adjustment of the relative sensitivity of the DMI-AMM on a per channel basis. When weighting controls are balanced (equal), each microphone has an equal opportunity to take over the system. A “noise floor” control imposes a lower limit (floor) on the level detector for all associated microphones to prevent a noisy microphone capturing a disproportionate share of gain during quieter moments.

In an S-Series console, the DMI AMM offers 48 channels of processing, which can be used in any console input channel. There are two independent AMMs implemented by the DMI-AMM, known as AMM-A and AMM-B, with channels assigned to either A or B, or neither. This means that two separate events can run simultaneously on the same console without one interfering with the other.

“We studied what was already available on the market and noticed that other implementations varied in quality,” explains DiGiCo DSP and product specialist Pete Johnston. “We tested the DMI-AMM at the lowest levels, as well as at very high levels, so the gaps between people speaking would come up with reliable results with no cumulative error when high channel counts were being used. We also made sure that all the control circuitry was running at sample rate so that the beginnings of words wouldn’t be cut in any way. This means that the AMM has a sample accurate response as well as having an extremely fast attack time. Each channel has its own pre-conditioning, which is carefully tuned to deal with both male and female voices alike.”

“Our corporate AV customers have been asking us for a product like this,” says Tim Shaxson, international sales manager at DiGiCo. “The one we have developed is exceptionally easy to use and has benefits for the corporate market and beyond. I can’t wait to let my customers try it out in the real world.”

Free of charge, the V2.2 upgrade will give S-Series users access to:
— Rack Receive Only mode – prevents the I/O rack’s input socket gain from changing on the surface if it is adjusted locally
— Snapshot fader crossfades – for all Input, Matrix and CG faders, fader crossfade times can be applied per channel and per Snapshot
— Control Group Spill – up to 10 pre-defined members of a Control Group can be spilled to any console section using a single button function
— OSC Control of Snapshots – OSC messages can be transmitted from the console when a Snapshot is fired, or a Snapshot can be fired when an incoming OSC message is received. This will work with Q-Lab and other show control software that uses the OSC platform for triggering Snapshots on the console or events from the console to the show control systems

DiGiCo’s growing house of worship market is steadily seeing more integration with personal monitoring. The company already offers a solution for Aviom personal mixers and is now pleased to announce an ME solution that offers a 40-output interface to Allen & Heath ME-1 or ME-500 Personal Mixers, with multiple personal Mixers able to be connected to the DMI-ME via the ME-U Hub.

“At DiGiCo, we have always taken the approach of being able to interface our systems with all available protocols in the markets,” says Matt Larson, vice president at Group One Limited, DiGiCo’s US distributor. “The DiGiCo Multi-Channel Interface family of cards allows us to design interface cards like the new DMI-ME card that connects with the Allen & Heath ME Personal Mixing System that is increasingly used in the House of Worship, theatrical and live touring markets.”

DiGiCo

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