ULTRACURVE PRO DEQ2496

Fig. 3.27: RTA menu (page 3)

If you wish to display the RTA in a larger format, please go to page 3, where the illustration covers the whole display. All the other functions available on page 2 can still be edited (RATE, PEAK, etc.).

3.8.1 AUTO EQ function (AEQ)

The RTA menu (page 1) also includes an AUTO EQ function, which allows you to analyze and correct the frequency response automatically. This module is subdivided into three additional pages. Please note that for the AEQ function to work you must connect a measuring microphone to the RTA/MIC input (see chapter 3.11).

Fig. 3.28: AEQ menu (page 1)

In terms of setup and functionality page 1 is identical to the GEQ menu (see chapter 3.2.1). You can determine the desired frequency response manually, onto which the automatic frequency response correction of the input/output signals shall be based. Once the curve of your choice has been set up, please switch to the second page of the AEQ menu.

+When you activate the AEQ menu, the current GEQ settings will be taken over and used as the desired frequency response curve.

Press the large data wheel to exclude individual frequency bands from the AEQ mode. These bands will not be processed by the automatic frequency response correction. It makes sense to exclude the low-frequency range (up to approx. 100 Hz) from AUTO EQing, because it is this range that may produce inaccuracies during the calculation of the frequency response, which might impair the results achieved with the AUTO EQ.

Fig. 3.29: AEQ menu (page 2)

On this page the signal to be processed is displayed as in the RTA menu. The MAX. parameter lets you select an “excerpt” of the entire level spectrum, depending on the actual magnitude of the signal level (upper data wheel). The RANGE value is firmly set to 30 dB. Press the upper data wheel to activate AUTO mode, which automatically adjusts the displayed “excerpt”, depending on the signal level. With the NOISE GAIN parameter (-60 to -10) you can adjust the magnitude of the noise level. AUTO EQ (lower data wheel) determines the speed at which the EQs are analyzed and their settings are calculated. You can select between the settings FAST, MID and SLOW.

The B key activates the room correction function (ROOM CORR.), which cuts the high frequencies and boosts the low- frequency range by “tilting” the desired response curve by 1 dB/oct.

When you press the A key (START AUTO EQ), the analyzer starts measuring and calculating the AEQ settings. The

subsequent messages inform you that the unit analyzes the level of the ambient noise at first, before it measures the noise signal applied. Subsequently, the ULTRACURVE PRO corrects the EQ values. Press STOP AUTO EQ to cancel this process.

Fig. 3.30: AEQ menu (page 3)

Page 3 of this menu shows the graphic EQ with the settings adjusted on page 1. Here, too, you can START AUTO EQing and change the NOISE GAIN parameter (large data wheel). However, this page includes two additional parameters: DMAX adjusts the maximum difference between two adjacent filters from 0 to +15 dB (large data wheel), while MAX. SPAN (lower data wheel) controls the maximum distance allowed between the desired and real frequency response curve (0 to 30 dB). When this value is exceeded, the corresponding range will not be processed. Press the B key (DONE) to complete this process and keep the adjusted curve. Press the RTA key to cancel. Please note the AUTO EQ does not automatically terminate the analyzing process.

+After leaving the first page of the AEQ menu, there is no way of returning to this page, but by leaving the entire menu and recalling it again.

3.9 MEMORY menu

In the MEMORY menu you can save and recall complete presets (page 1) or load and save individual modules (page 2). Modules that are active within a preset are marked by a letter (G = GEQ, P = PEQ, D = DEQ, W = WIDTH, Y = DYN). If the stored I/O settings differ from the current ones, an I (=I/O) will appear next to the letter indicating the module.

Fig. 3.31: MEMORY menu (page 1)

On the first page of this menu, you can save and recall complete presets. To save a previously edited preset please use the large data wheel to select a memory location from the table shown (max. 64 user locations).

+Preset #0 (INITIAL DATA) is a neutral default setting which cannot be overwritten (READONLY).

You can either select an EMPTY memory location or overwrite an existing preset, as long as it is not write-protected (PROTEC ON). After selecting a memory location, press the A key to store the preset (STORE PRESET).

+When you try to overwrite an existing preset and press the A key, the DEQ2496 will prompt you to confirm your overwrite command (OVERWRITE DATA?). Press the A key to CANCEL, or the B key (or press the large data wheel) to confirm (OK).

After pressing STORE PRESET another menu will appear in which you can name the preset (max. 16 characters). With the data wheel (turn) and the upper data wheel (turn and press), you can select the characters both horizontally and vertically. Press the center data wheel to enter a character, subsequently the cursor in the lower entry field will be moved to the next position. Turn the lower data wheel to select individual positions and press it to erase individual characters. When you keep the

3. MENU STRUCTURE AND EDITING

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