Dynacord Stereo System 사용자 설명서

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XLR mic/line inputs, eight GPI control inputs, two XLR outputs capable of either independent or 
stereo operation, and two VCA level inputs. In addition, two of the XLR mic/line inputs can be 
configured for paging with adjustable ducking. The DRM 4000 can be programmed to change its 
configuration through presets assigned to the GPI inputs, PC control (RS-232), or DPM 4000 
control (RS-485). A good example of using the DRM 4000 stand-alone is in a typical 
restaurant/bar application. There may be multiple sources such as TV, tuner, CD player, music 
server, etc… and you may want a different source in the bar area such as the TV for the big 
game, while in the restaurant you might want some jazz playing in the background. In addition, 
you may want the hostess to be able to selectively page in the bar area for customers that are 
waiting for tables in the restaurant. 
Volume 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 fade-out and fade-in background 
music during the transmission of important messages. 
Besides, each of the four inputs embodies three fully parametric digital filters allowing for optimal 
tone control. The filters provide different filter types like Hi-/Lo pass filters, shelving filters, and 
peak-dip-filters providing the possibility for adjusting the sound within the entire audio 
transmission range. Factory-preset filter settings for the DPC 4000 Series paging stations are 
already provided. 
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 special-function keys on the paging stations or through external controls that are 
connected to analog or digital control inputs. 
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 arrival of 
sounds or environmental circumstances related to architectural characteristics of the location, can 
be equalized without additional effort. 
Signal 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 DSP-algorithms, which are extremely flexible in 
use, so that they can be adjusted to match nearly any possible application. Factory presets 
include 6 different gong signals, 18 different alarm signals, plus sine cycle at any frequency. 
Other than in comparable equipment, the ProAnnounce signal generating DSP-algorithms do not 
take up any extra storage of the voice message memory. 
In addition, a voice message recording/playback module providing CD-quality sound is optionally 
available. With a total recording time of approximately 6 minutes, 25 different messages are being 
managed. The DPM 4000 provides the possibility to install up to four optional FLASH-memory 
modules, depending on individual desires or requirements. 
Control Inputs And Outputs 
By using the control inputs, it is possible to link the ProAnnounce system to fire alert systems, 
burglary alert systems, or to a central operating desk. It is also possible to connect external 
switches, breakers, rotary controls or rotary encoders, respectively to query control outputs of 
external units (power supplies, power amplifiers). 
  ElectroVoice/Dynacord BGM Guide 
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