Praesideo 3.5 Installation and User Instructions 9 System Configuration

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48 Audio processing

48.1Introduction

On the Audio Processing pages, the audio processing parameters of all normal audio inputs and outputs in the system can be set (see section 48.2). Audio inputs that are configured as AVC inputs must be calibrated using the Audio Processing pages (see section 48.3).

Audio processing parameters are changed immediately when the Submit Equalizer button on the Audio Processing pages is clicked. Although the changes are audible, it is important to realize that they are not automatically saved. If the changes are not saved they will be lost when the network controller is reset. See section 40.4.5 for information about saving configuration settings.

48.2Audio processing parameters

48.2.1 Equalizer

See figure 48.1 for an overview of an equalizer options of normal audio inputs and outputs.

•Low-pass filter - A low-pass filter with a fixed quality factor and slope.

48.2.2 Equalizer setting

Proceeds as follows to configure a filter:

1Select the frequency of the filter from the Freq dropdown list. See table 48.1 for a list of available frequencies.

2Select the gain of the filter from the G dropdown list. See table 48.1 for a list of available gains.

3 Select the quality factor of the filter from the Q dropdown list. See table 48.1 for a list of available quality factors.

4 Put a check mark in the Active box of the filter to enable the filter.

5Click the Submit Equalizer button to submit the changes. The changes are immediately applied to the audio input or output.

Note

The default values in table 48.1 are indicated by

asterisks (*) when applicable.

figure 48.1: Audio processing - overview

From left to right in figure 48.1:

•High-pass filter - A high-pass filter with a fixed quality factor and slope.

•Shelving filter - A shelving filter for low frequencies with a fixed quality factor.

•Full parametric section - Three full parametric sections with adjustable quality factors, gains and frequencies.

•Shelving filter - A shelving filter for high frequencies with a fixed quality factor.

48.2.3 Volume setting

For the audio outputs, a parametric equalizer and a volume button is available to change the volume of the audio output. The multi channel interface does not provide an equalizer for each output, but does provide a volume control button for each enabled output to control the volume of connected basic amplifiers.

48.2.4 Spare power amplifiers

Spare power amplifiers do not provide volume and equalizer settings for the outputs. These settings are automatically set to the same position as the main amplifier that is replaced by the spare amplifier. Spare power amplifiers do have general purpose audio inputs with an equalizer or with an AVC calibration button depending on the configured input function. These audio inputs remain active also when the spare power amplifier replaces a failing main power amplifier.

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Bosch Appliances 3.5 manual Audio processing parameters
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