all_docs

Setup

Spectrogram</link> setup

Direction

Define the scrolling direction of the spectrogram.

Log Gain

Toggles logarithmic scaling of the magnitude spectrum on and off.

Default is on.

When enabled, the magnitude at a time-frequency is applied a logarithmic scaling before being converted to a pixel value. This has the effect of compressing the dynamic range, and makes low energy components stand out more, but also decreases the contrast of the display.

Threshold

Threshold min

Sets the minimum amplitude spectrum value to be displayed.

Threshold max

Sets the maximum amplitude spectrum value to be displayed.

Color Mode

Duotone

In this color mode, the amplitude of a time-frequency point is mapped to a pixel using a two-color palette, set using start/end colors.

Black On White

In this color mode, the amplitude of a time-frequency point is mapped to a pixel using a Black & White color palette with White as background.

White On Black

In this color mode, the amplitude of a time-frequency point is mapped to a pixel using a Black & White color palette with Black as background.

Power grading 1, 2, 3

In this color mode, the amplitude of a time-frequency point is mapped to a pixel using different predefined color palette.

Frequency grading

In this color mode, the amplitude of a time-frequency point determines the intensity of the corresponding pixel, whose color varies according to frequency.

Duotone start/end colors

Sets the color to use for minimum and maximum amplitude components respectively, when color mode is set to ‘Duotone’.