The Digiplexer 246 is a revolutionary digital audio processor that can be used to process audio for FM and digital broadcasting such as HD/DAB and Internet streaming. Using the latest multi-band DSP technology, the DSP board provides up to 2.8 gigaflops of processing power and enables broadcasters to create their own sonic signature and to attract and keep a loyal audience.

Automatic Gain Control

Using predictive techniques, the Automatic Gain Control is based on complex algorithms that correct large level variations without any pumping effect. It maintains a constant audio level on the air. The wideband approach keeps the balance between frequencies. Silence gating prevents unnecessary volume changes and improves processing quality.

The Digiplexer 246 features a standard 2-band audio processor. Yet, it allows the creation of specific sonic signatures thanks to its 4-band parametric equalizer. For each band it is possible to configure the frequency, the gain and the filter quality. This level of precision is quite useful for bass enhancement. You can also increase high and low frequencies dynamically thanks to the Bass FX and Treble FX.

Enhance the stereo effect of your signal with perfect control. Stereo enhancement used to be a source of reception troubles such as multi-path. The Digiplexer 246 includes a specific limiter to insure reception stability.

The Digiplexer 246 uses a unique algorithm that controls the gain for each band. You can easily control how the Digiplexer 246 will process your sound. A ‘Fidelity’ parameter enables you to control how close to the original sound you would like to remain. (Purist/Processed). The Digiplexer 246 also has the Sound Impact System, which is a revolutionary algorithm that preserves dynamic and peak attack perception.

The Digiplexer 246 contains an advanced 2 or 4-band limiter (depending on version). Its look ahead function guarantees perfect peak control without the drawbacks of limiters. A mix function enables control of the balance between the bands.
You can buy a 2 bands and upgrade it by software in the future.

Previously the best clippers on the market were running at a sampling rate of 768kHz. The Digiplexer 246 includes a revolutionary ‘virtual’ composite/MPX clipper that samples at 1.5 MHz. This level of quality and control has never been reached before. Precisely control high frequency energy with the HF limiter. An HD limiter can be used at the same time to process digital high quality radio (HD /DAB / DRM). This limiter uses predictive techniques with very low delay (<6ms on 4-band version).

 
Preset management

 
User friendly and intuitive interface

Audio configuration made easy:

• Instantly compares current settings with an existing preset.
• Keeps a record of all modifications thanks to the complete undo/redo function
• Uses easy and full modes for audio configuration
• Creates your own view by selecting the meters you want to see.

AUDIO BACKUP

The Digiplexer 246 includes an 80Gb hard drive for audio backup. This function provides additional security in case of loss of audio at the inputs. The audio backup is presented as an integrated 3rd audio input with the advantage of configurable crossfades during input auto-switching. An alarm can be automatically sent by the unit to inform the engineer of audio source failure. Using the java interface, upload audio files from your PC to be used for the Audio Backup, or set the IP port address of your ‘SHOUTcast’ server so an IP MP3 stream input can serve as audio backup.

You can also use the hard drive to store audio files to be played at specific time or triggered using the contact closures and Scripteasy software, to insert local content into a translator broadcast, etc.

2 versions are available, a basic version with only 1 audio file stored on the hard disk or an advanced version including a full playlist management.

RDS ENCODING

Using high speed DSPs, the Digiplexer 246 is a highly over sampled stereo encoder that offers amazing stereo performance and perfect synchronization. The MPX limiter enables control of the composite power conforming to ITU-R412.

• DSP technology and perfect synchronization of all subcarriers.
  • Audio, Pilot and RDS signals are produced in the same unit.
• Stereo Encoder, highly over-sampled for stereo performance never reached before.
• HQ Sound means higher audio quality for listeners:
  • 192kHz for processing
  • 1.5MHz for final limiters
  • Extend FM audio bandwidth to17kHz without affecting the 19kHz or L-R signals.

The Audemat Digiplexer 246 has 5 slots that can be equipped with digital inputs, analog inputs and relay output boards. In standard form, it includes Scripteasy V2, powerful software that enables the creation of scripts and automatic routines. This solution can be used to control other equipment such as a satellite receiver, to trigger the Traffic Announcement (RDS) or to control and play audio files stored on the local hard drive of the Digiplexer 246.
Scripteasy enables the integration of serial protocols using its  RS232 API tool. Therefore, the Digiplexer 246 could control and monitor an FM amplifier using a serial cable. Scripteasy also allows for the integration of the SNMP MIB of an external piece of equipment, and execution of the GET and SET commands via IP.

An embedded FM receiver can be added to provide an ideal solution for FM rebroadcasting .
A high level of performance and sustained reliability will satisfy the requirements of the most demanding broadcasters, satellite and cable operators...
Typical rebroadcasting applications for this equipment are coverage of shaded areas, rebroadcasting in tunnels and rebroadcasting from ‘on-air’ programs to cable network or satellite operators.
It can also be also used to monitor received signals in control rooms (with monitoring option)