Entry_Door_Phone_Configuration-6
Author: Bogen
Description: Nyquist

Setting DSP Parameters

When you select DSP from the appliance’s web UI, the DSP page appears.

Figure 1. DSP Page

From this page, you can configure the device’s Digital Signal Processing (DSP) features, a form of processing that uses digital data to simulate characteristics found in analog circuits. With DSP, you can alter analog signals, such as audio signals, that have been converted to a digital format.

The DSP page allows you to adjust the microphone input gain, as well as viewing level indicators for both the input and output signals. Selecting the DSP Features button (i.e., the hamburger menu above the OUT signal indicator) displays a menu that allows you to access DSP features, as described in the following table.

Tip:​You can select Save Settings to Server to back up all configuration settings to the Nyquist server.

Note: The channel fader controls the input gain of the microphone, not the output level of the speaker. To control the output level of the speaker, use the Intercom Cut Level control for this station on the Nyquist server. If this device is in Standalone mode, the output level can be controlled using the Intercom Cut Level control on the Configuration Settings page.

Table 11. DSP Features

Intercom Tuning | Allows you to specify when the intercom switches between send and receive modes.

Intercom Tuning

The Entry Door Phone provides half-duplex communications, which means that only one party can talk at a time. Which party can talk (i.e., this Entry Door Phone or the Admin Phone) is controlled automatically by the Intercom Tuning settings. Whenever a signal from the Admin Phone exceeds a certain level—known as the switching sensitivity level—the Entry Door Phone switches to receive mode, allowing the party using the Admin Phone to speak. When the signal is below that level, it switches back to send mode, allowing the party using the Entry Door Phone to speak.

Selecting Intercom Tuning from the Menu icon on the DSP page displays the Intercom Tuning page.

Figure 2. Intercom Tuning Settings

The Intercom Tuning page has LEDs for input and output signals and contains the following settings (see Table 12).

Table 12. Intercom Tuning Settings

Switching Sensitivity | Specifies the input level above which the Admin Phone transmits, below which the Entry Door Phone transmits. The range is −90 to −20 dB.