Changing Time and Frequency Coordinates

The time (yellow) and frequency (green) markers can be used to precisely locate any detail of the displayed spectrum.

Time coordinate

The graph displayed right above the spectral plots shows the analyzed portion of the signal. A spectral graph corresponding to a particular time slice (frame) selected in the signal window is shown in yellow. The time coordinate of the center of the active frame is displayed next to the signal plot. In order to switch to another frame, click anywhere in the signal display area, use the frame scroll buttons or type a new value of the frame number in the frame box and press the ENTER key. When the signal display window is active pressing the UP/DOWN ARROW keys moves the cursor by one position to the left/right.

Use the CENTER button to center the display on an active time frame. To move along the time axis increase the zoom coefficient, move a cursor to a new position, and restore the original zoom settings. To gradually rewind the contents of the signal window, press the MOVE LEFT/RIGHT buttons - each time you press the button the window is moved by one-half of its width to the right/left.

The scale box, displayed below spectral graphs, allows you to scale the signal plot. Scaling may be useful if the gain (loudness) of the audio is small or if you browse through parts of the recording that significantly differ in volume.

When you close the Spectral view dialog (by pressing the Close button) the cursor in the active soundfile window will be automatically set in the middle of the active frame. If you exit the Spectral view dialog the cursor position will remain unchanged. Please note that pressing the CENTER button or the MOVE LEFT/RIGHT buttons changes the position of the cursor in the active soundfile window.

Frequency coordinate

The slider situated beneath spectral graphs can be used to sweep the available frequency range, i.e. anything between zero and half of the sampling frequency. After selecting the slider use the LEFT/RIGHT ARROW keys to move it by one position to the left/right.

The spectral line corresponding to a chosen frequency (displayed next to the slider) is distinguished with green dots.