
The DRS 2006 Sound Processor is an optional plugin for the DRS 2006 radio automation software Version 4 and higher. This plugin includes an automatic gain control (AGC), a compressor and an equalizer.
The automatic gain control (AGC) is an adaptive system found in many electronic devices. The average output signal level is fed back to adjust the gain to an appropriate level for a range of input signal levels. For example, without AGC the sound emitted from an AM radio receiver would vary to an extreme extent from a weak to a strong signal; the AGC effectively reduces the volume if the signal is strong and raises it when it is weaker. The Compressor reduces the volume of loud sounds or amplifies quiet sounds by narrowing or "compressing" an audio signal's dynamic range. The Equalizer filters and amplifiers are used to alter the relative strengths of different frequencies in an electronic signal. The Equalizer is used to fine-tune the signal to compensate for distortions such as weak response or oversensitivity at various frequencies.
After activating this plugin you will have a new ribbon in your DRS 2006 software which looks like this:

This ribbon has 4 different sections (Load & Save, Compressor, Equalizer and AGC)
First you use the mouse to click on one of the knobs and then you can:
1. Use the mouse wheel up and down
2. Use the arrow keys (left, right, up and down)
3. Click directly on the mark of the knob and move the virtual knob in a circular motion

The Compressor has 6 knobs you can use to adjust the settings
1. Gain (dB) - The output gain of the signal after the compression
2. Attack (ms) - The time before the compression reaches its full value
3. Predelay (ms) - The time after the threshold is reached before the attack phase is started
4. Ratio - The compression ratio
5. Release - The time (speed) at which compression is stopped after the input drops below threshold
6. Threshold (dB) - The point at which the compression begins

The Equalizer has 9 knobs you can use to adjust the settings
1. Gain (dB) - The output gain - LOW
2. Width (st) - The bandwidth in semitones - LOW
3. Center (Hz) - The center frequency - LOW
4. Gain (dB) - The output gain - MID
5. Width (st) - The bandwidth in semitones - MID
6. Center (Hz) - The center frequency - MID
7. Gain (dB) - The output gain - HIGH
8. Width (st) - The bandwidth in semitones - HIGH
9. Center (Hz)
- The center frequency - HIGH

The Automatic Gain Control (AGC) has 5 knobs you can use to adjust the settings
1. Gain (dB) - The amplification level
2. Delay (s) - The time before increasing the level
3. Predelay (dB) - The quiet volume level
4. Rate - The amplification adjustment rate
5. Target (dB) - The target volume
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