BioMedia: FMP Input Settings Pane

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Input Mode

Input Mode select box determines how the biofeedback/neurofeedback software will communicate with the FMP. These settings interact with the settings below it. To make a selection, click on the desired mode so that it is highlighted.

Sound/Silence Detection

With this setting, sound will be detected on the Audio In or Digital In connector, which should be connected to some audio source. Please see Audio Control for the steps to connect this. This is the default setting.

In this mode, the FMP performs "peak-detection" of the audio signal. This means that on the next rising slope of the audio waveform, if the waveform exceeds the threshold, then detection will be declared. On the falling slope of the audio waveform, the detection decays according to the Decay Rate setting. If there are gaps in the sound that you wish to ignore, such as normal silence between notes, a slower decay will allow sound to be continuously detected during that interval.

If this option is selected, the following settings function as follows:

Invert Reward Polarity
If this box is checked, detection will be during silence, and non-detection during sound.
Soft Threshold
If checked, the value to the right is used instead of the Threshold Knob setting. The values range between 0 and 255. If this is not selected, the Threshold Knob will determine the threshold setting, and is displayed at the bottom of the box.

Switch Logic Input

This setting changes from detecting sound on the Audio In or Digital In connector to detecting a Short or Open between the Tip and Sleeve of that connector. Please see Logic Control for the steps to connect this. An alternative way to select this is by turning the Threshold Knob fully clockwise. When selected in BioMedia, the Knob is ignored.

If this option is selected, the following settings function as follows:

Invert Reward Polarity

If unchecked:
PLAY state is selected when the TIP is shorted to the SLEEVE, or a logic "Low" is provided on the TIP. Otherwise, PAUSE is selected.
If Checked:
The opposite of the above.

Zone Bit

The Zone Bit mode allows direct control of the PLAY or PAUSE state through the USB interface only. When this setting is established, the Audio In or Digital In connector is ignored and the input is only provided by checking the Simulate Sound/Switch checkbox. Biofeedback product vendors can obtain the interface specification from Cognisys so that only the USB cable is necessary.

If this option is selected, the following settings function as follows:

Invert Reward Polarity

If unchecked:
PLAY state is selected when the Simulate Sound/Switch checkbox is checked. Otherwise, PAUSE is selected.
If Checked:
The opposite of the above.

Simulate Sound/Switch
This checkbox directly controls the state of the control output.

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