When you select DSP from the appliance’s web UI, the DSP page appears.
From this page, you can set parameters for DSP, which is 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.
You can also select Save Settings to Server to back up all configuration settings to the Nyquist server.
The DSP page allows you to adjust the signal level for the Output channel, as well as viewing level indicators for both the input and output signals. Selecting the DSP Features button (hamburger menu above the OUT signal indicator) displays a menu that allows you to access DSP features, as described in the following table.
Intercom Tuning | Allows you to specify settings used in intercom calls. |
Presets | Allows you to use preset DSP settings for the selected speaker type. |
The Channel Level control is a vertical slider that is adjusted in 1-dB increments and controls the output level for the channel. The Channel Levels can range from -60 to 12 dB. If you place the mouse over the slider, the numerical value of the level appears.
The vertical slider control can be used to adjust the channel’s output level in 1-dB increments between -60 and +12 dB. The overall adjusted output level of the channel signal can be viewed on the OUT VU meter, marked in 2-dB increments between -60 and 0 dB.
Tip: For best results, use the vertical slider to adjust the input level until you have a strong signal (i.e., within the green and yellow areas on the meter), then adjust the final output levels using the DSP Outputs controls.
To adjust the channel volume level:
1 On the appliance Web UI’s main page, select DSP.
2 Use the channel’s slider to adjust the volume level.
Many DSP controls use knobs to adjust one or more settings. The value of a knob can be adjusted in one of two ways:
1 Click the knob control, hold the mouse button down, and drag the mouse up or down to increase or decrease the value.
2 Double-click the knob, type a value into the resulting popup, and click the Save button.
Selecting Intercom Tuning from the Menu icon on the DSP page displays the Intercom Tuning page.
The Intercom Tuning page has level indicators for input and output signals and contains the following settings (see Table 9).
Switching Sensitivity | Specifies the input level at which the Admin Phone takes over for the speaker. The range is -90 to -20 dB. |
There are a number of DSP effects that are used to enhance the quality of the audio signal being played on the VoIP speaker device (though not all of these effects are visible and available for customization). Due to design differences between the VoIP speaker models (e.g., microphone placement), these DSP settings must be customized for each model.
Bogen has created predefined sets of model-specific DSP configurations to customize the signal for each device. These configurations are available via Presets.
Note: It is important that the preset corresponding to the speaker model be specified.
Selecting Presets from the Menu icon on the DSP page displays the Presets page.
The Presets page allows you to select the Speaker Type.
Speaker Type | Select a predefined Preset configuration from the list of speaker models. Available options are: NQ-S1810CT (ceiling-mounted speaker) NQ-S1810WT (wall-mounted speaker) |