SYSTEM DESCRIPTION
normal operation,
3.2Audio Routing
The DPM 4000 employs a digital audio matrix providing 4 inputs and 4 outputs. Additional matrix junctions for the integrated gong and alarm signal generators, the vocal recording/playback unit, and the
Next to connecting paging stations, the audio inputs also serve for the connection of other audio sound sources, like microphones, mixers,
3.3Volume And Tone Controls / Delays
The PROANNOUNCE system provides individual volume controls for each input, output, and paging station. Even the internal audio sources, like gong/alarm tone generators, voice message playback, and pilot tone generator employ individual level controls, each. Additionally, it is possible to set an attenuation that unanimously affects the inputs. This value determines the degree, by which the input signal is attenuated during the reproduction of messages or other signals with a higher priority setting. This allows to smoothly
Besides, each of the four inputs embodies three fully parametric digital filters allowing for optimal tone control. The filters provide different filter types like
Setting volume levels and filter parameters is accomplished via PC during the configuration procedure. Further, it is possible to alter any volume setting during the later operation of the system via
All four outputs employ digital delays allowing signal delays of up to 330 ms per channel. Natural delays, resulting from loudspeaker positioning which causes time differences in the traveling of sonic events or environmental circumstances related to architectural characteristics of the location, can be equalized without additional effort.
3.4Signal Generators / Voice Message Memory
The DPM 4000 provides a variety of tone generators for the generation of gong, alarm, and text signals. Signal generation is realized through
In addition, a voice message recording/playback module providing
PROANNOUNCE System User Handbook 1.1 |