System DSP"on demand" anywhere in the NEXUS network

40-bit floating point processing

For an exact calculation of the audio signals, a 40-bit floating point resolution is used internally

Different signal processing modules available, e.g. ISOSTEM-Upmix

The XDSP card can operate up to two Isostem upmix algorithms to display stereo signals such as finished mixes in surround.

Level and delay adjustment

Level and delay controls are configurable.

Parametric/graphic equalizer

The equalizer unit consists of both low/highpass and two shelving filters as well as four bell filters. All bands can be changed in frequency from 20Hz to 20kHz and with +/-24dB gain. The slope of the bandpass and cowtail filters can be selected in 6dB steps of 0dB-24dB, the quality of the bell filters can be between 0.5 and 9.

Blocking filter (high/low pass, bandpass, all-pass filter (90°)

For many applications, no complex equing is required, only blocking filters that are conveniently applied by the XDSP card.

Dynamic processing (compressor, limiter, expander, gate, de-esser)

Common dynamic modules can be set up and operated by the user.

Diplexer

For e.g. extensive public address systems there is the possibility to set up crossovers on the XDSP board.

Total matrices

The XDSP card can also be used for total matrices.

Level/Delay Matrix

A level/delay matrix can be created for sound reinforcement tasks requiring a large number of distributed loudspeakers.

N-1 matrix

The configurable N-1 matrix eliminates the need for a mixing console for conference calls.

Signal processing for static mixes without console

The versatile options offered by the XDSP board are freely configurable and enable signal processing chains similar to those of a mixing console. A wide range of requirements can thus be met for static audio processing, from frequency- to dynamically changing measures. In a situation in which the same speakers repeatedly work with a microphone, a sound can be set up with equalization, dynamic limit and limiting and statically round off the corresponding input signal or call it up again for the circumstances as a stored snapshot of the matrix operating program.

Crossover for controlling active loudspeaker systems

Active loudspeaker systems without their own signal processing can be supplied with tailor-made signals because the XDSP card can also take over the function of a crossover as standard. This way, the audio channels are output directly for the speaker. For this purpose, the high and low-pass modules with a range of 20Hz-20kHz can be inserted into the signal path.

Correction of delay differences between loudspeakers

The spatial conditions at concerts or performances in halls and venues often force the use of additional loudspeakers, supporting the main sound system. Delay lines installed far apart from each other are common, especially when high demands are placed on good sound coverage of all seats. However, this leads to runtime differences with the signal of the mains, whose delayed arriving wavefronts cause phase problems and echoes. The additional speakers must therefore be tuned to the main rig so that the more distant delay lines do not output the signal until the sound of the mains has reached them. Such required delays in the signal path can be achieved using the XDSP board by adjusting the output signals of the NEXUS system with delays that can be set to tenths of a millisecond.

NEXUS / NEXUS Star Technical specifications

XDSP Technical specifications