Spectrogram...

Bandwidth (Window Length) Displays window length in points and the corresponding bandwidth in hertz.

Frequency range (Hz) The frequency range to calculate and display the data.

Dynamic range (dB) The maximum power level to calculate and display the data.

Pre-Emphasis Sets the pre-emphasis for calculation. The range is between 0-1. For zero, no pre-emphasis is performed.

Format Tracking

Display formants If checked, displays the formant tracking data over the spectrogram.

Formant tracking LPC Coefficients Sets the number of LPC coefficients for formant calculation.

Draw audio on the top of spectrogram If checked, displays audio data on the top of the spectrogram.

Add Frequency grid with spacing (Hz) Displays frequency grids with the desire interval.

Add time grid with spacing (dB) Displays time grids with the desire interval.

Print/BMP

Prints and saves the FFT data according to these parameters.