Specifications

International Radio and Electronics Corporation

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5.3 Guide for adjusting processing parameters of the DP3

First let’s talk about the presets. In general, the preset names are not meant to limit their

application, but to suggest the overall character of the sound and recommend possible

starting points. They tend to provide processing that will work for a “typical” example of

that format in a “typical” radio market. But, every market is different, and an audio

processor is meant to allow every user to achieve the sound that suits them best.

Especially important when trying presets is the setting of the Clipper control as it sets the

primary loudness-to-distortion-trade-off for each preset. This control will need to be set

to your taste and market conditions for each preset that you try. The best way to adjust it

is to turn it down using 0.5 dB steps until you feel that the loudness has fallen off too

much and then turn it up slightly from there. The general idea is to use the lowest setting

of the Clipper control that provides the desired sound. Feel free to experiment. With this

in mind, the following sections are meant as a guide in helping you further customize

your sound with specific areas of interest.

5.3.1 What you can do to increase loudness

The simplest approach is to try a more aggressive preset. But, if you are really happy

with the general character of the current preset and just want a little more loudness, or

you can’t find a preset with the right loudness/cleanness compromise there are a few

things to try.

Try to resist the temptation to crank on the aggressive processing sections. Those will

add loudness, but usually at the cost of quality. Many times, building a little more RMS

level in the AGC sections will do the trick. The following are some suggestions on where

to begin to make changes. Try them in the order described in sections 5.3.1.1 to 5.3.1.4.

5.3.1.1 Alter the following parameters in the AGC:

• Increase the Processing Drive to the AGC sections.

• Increase the Drive to the AGC sections.

• Increase the Release time settings to operate faster.

5.3.1.2 Modify the Multiband Limiter sections:

• Increase the Drive to each section.

• Increase the Release time settings to operate faster.

• Set the Hold threshold to a low value.