# Fixed vs Variable Parameters

The controls of the training parameters that were not selected to be trained on are greyed out on the interface. These inactive controls are set to a fixed value by default: the Frequency is fixed at 1k Hz, Gain is fixed at +6 dB and Q is fixed at 0.8.

![The interface as set-up to train on Frequency and Q only. Note the Gain control is greyed out, and the Fixed button is displayed under the control.](/files/UiiWqMZezQfkTUOMYGoI)

**To change the inactive parameters to Variable, click on the Fixed button under the inactive control.**

When set to Variable, the parameters will be randomly\* chosen based on the Frequency Resolution, Gain Type, Gain Resolution, and Q Resolution settings.

{% hint style="info" %}
\*Dependent on whether [Adaptive Training](/frequia/advanced-training/adaptive-training.md) is enabled.
{% endhint %}


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