HARK Document Version 3.4.0. (Revision: 9509) : plotQuickMUSICSpecKivy

6.8.1 plotQuickMUSICSpecKivy

This node displays the output obtained by the MUSIC method in GUI using Kivy.

None.

When to use

This node is used when you want to check the spectrogram of the sound source localization result.

Typical connection

Connect to the spectrum localized by LocalizeMUSIC .

$\includegraphics[width=.8\textwidth ]{fig/modules/plotQuickMUSICSpecKivy}$

Figure 6.155: connection example of plotQuickMUSICSpecKivy

Inputs

SPECTRUM: : Enter the vector(Vector<float> type) that represents the spectrogram. The number of dimensions is equal to the number of bins in the frequency direction.

Outputs

Parameters

No parameters.

$\includegraphics[width=.8\textwidth ]{fig/modules/plotQuickSpec}$

Figure 6.156: Execution screen of plotQuickMUSICSpecKivy

Figure 6.156 shows the execution screen of the plotQuickMUSICSpecKivy function.

A spectrogram is displayed from the center to the upper left of the screen. The horizontal axis corresponds to the time(frame), and the vertical axis corresponds to the frequency(bin). The spectrogram is drawn in gray scale according to the power.
The average power at each time is displayed at the bottom of the screen. The horizontal axis corresponds to the time(frame) and the vertical axis corresponds to the power.
A histogram of the power is displayed on the right part of the screen. The vertical axis corresponds to the power and the horizontal axis to the frequency.
By dragging the power histogram part with the mouse, you can specify the range of power to be displayed in grayscale in the spectrogram part. In the range of the specified power, the spectrogram is drawn with the luminance corresponding to the actual power value. If the power is out of the specified range, it will be drawn with a brightness value of 0 or 1.
By dragging the spectrogram area with the mouse, you can specify the frequency range for the average power. The average power in the specified range will be displayed at the bottom of the screen.