ULTRA-CURVE PRO DSP8024
possibly causing the noises mentioned above.
SHELVING SLOPE
This is a tool which you can use to easily add high shelving, low shelving and bell-shaped response curves to the graphic equalizer (see section 2.1.5 on previous page).
LIMIT THRESHOLD
The ULTRA-CURVE PRO has an integrated digital limiter to protect against overloading and resulting distortion. Its Attack Time is zero, in other words, it reacts “in advance”. This way it acts as a real “brick wall” and can be used in combination with the security password to create a absolute limiter to prevent noise pollution.
The operating threshold of the limiter can be set, in 1 dB steps, anywhere from 0 dB down to -36 dB. The levels given in dB are relative to the maximum output signal (DIG MAX) of the ULTRA-CURVE PRO (0 dB DIG MAX equates to +16 dBu or +14 dBV). Additionally, you can deactivate the limiter by choosing the setting OFF.
LIMIT RELEASE
When the signal falls below the limiter threshold, the gain reduction is returned to zero. The rate of change is governed by a time constant (release time) which can be defined between 0.5 and 5 seconds.
NOISE GATE THRESHOLD
You can mute noise (e. g. from a mixing desk, or keyboards) which might appear during program pauses, by using the built in NOISE GATE function. As soon as the signal level is lower than the Threshold you will have set, the ULTRA-CURVE PRO's outputs will be muted. The Threshold may be anywhere from OFF to -44 dB, the scale again referring to the digital maximum. Additionally, you can deactivate the noise gate by choosing the setting OFF.
DELAY
The delay is adjustable in steps of 0.1 ms. The maximum delay time you can choose is limited to 2.5 seconds— for both channels independently, of course. You can adjust the delay value in meters and feet as well. The edited value is automatically converted (temperature 20° C and relative air humidity of 80%).
2.2 Real time analyzer
The integrated real time analyzer of the BEHRINGER ULTRA-CURVE PRO enables 1/3-octave measurements with a precision of 0.25 dB. Of course, you can adapt the display to your own needs and habits. By pressing the RTA key you enter the RTA mode.
Fig. 2.7: Main RTA window
The RTA display shows the 31 1/3-octave frequencies, with the overall level to the right, similar in general to the equalizer display. To the left is the pictogram containing the softkeys. By moving the horizontal cursor keys or the one pointing upwards, you can “freeze” the display, simultaneously displaying a set of crosshairs, and an information window (see figure on top of next page). Using the cursor key pointing downwards will make the crosshairs and the information window disappear as well as “de-freeze” the display. The information window displays the precise values pertaining to the selected frequency, along with the number of the RTA program currently in use. By moving the crosshairs to any given frequency band, or the overall level, you can display the details of the chosen band in the information window.
Fig. 2.8: RTA display with information window
