at the top-right of the screen.The settings provide access to decoder, encoder and playback settings and support features.
The settings can be accessed using the Settings button at the top-right of the screen.
Determines how the decoder calculates matching tones from the audio stream. Experiment with different settings to determine the best method.
Determines how much the noise is filtered. Adjust as needed to get the best results for the decoding situation.
Determines which set of tones are used for the Blue Box and Red Box features. Choose from US, UK or Europe.
Multi-frequency tones were a precursor to DTMF and use different tone combinations for the number keys. Additional control tones will be available when enabled.
A custom tone combination can be configured with adjustable frequencies, volume and pulses. For more information on configuring the custom tone, see Custom Tone.
Determines the volume of the tones for encoding. This applies to all tones, with the exception of the custom tone.
Determines how long the tones are generated during playback.
Determines how much of a delay is between tones during playback.
Determines how long of a delay is generated by the pause character (,) during playback.
Determines how fast the tones reach maximum amplitude and silence when tones are generated. This is like a fade in and out for the tones. Decrease this value as needed if the speaker makes a popping sound when a tone is started.
Enable this option for continuous playback. When the playback buffer is completed, it will start from the beginning again. Playback will repeat until the Stop button 
is pressed.
Use this option to display the support resources.
Choose this option to display the instructional popups, indicating how to use the controls in the interface.