User's Manual - Cornell Lab of Ornithology - Cornell University

Chapter 1: Getting StartedAdjusting the signal displayMoving andresizing windowsResizing panesThe active paneShowing andhiding panesStretching andsqueezing thedisplayYou can position the signal window and the command panel wherever youwant on the screen in the usual Macintosh way, by dragging the horizontaldrag bar at the top of the window (the drag bar is the title bar in the signalwindow, the stippled bar in the command panel). You can adjust the size ofthe signal window in the usual way as well: by dragging the size box in thelower right-hand corner, or by clicking in the zoom box in the right-hand endof the title bar. For now, adjust the window so that it takes up about threequartersof the screen, with the command panel positioned so that you can seethe whole signal window. (The command panel always floats in front of thesignal window. If it’s in the way, you can get rid of the command panel byclicking in its close box; you can always retrieve it by selecting CommandPanel from the Windows menu or typing Command-T.)If you position the mouse on the horizontal bar that separates the panes, themouse pointer changes to the icon shown at left. You can then change therelative vertical sizes of different panes in the signal window by dragging thehorizontal bar that separates the two panes.At any time, one of the panes in the signal window is the active pane, asindicated by a horizontally hatched vertical bar along its left edge. Somecommands apply only to whichever pane is the active pane. You can activate apane by clicking anywhere in it. To activate a pane without selecting part ofthe plot shown in it, click below or to the left of the axes.Clicking on the command panel’s waveform (WVF), spectrogram (SPG), orspectrum (SPK) buttons will hide the corresponding pane, if that pane ispresently displayed. If a pane is hidden, clicking on its button shows the pane.If no spectrogram or spectrum has been calculated yet, clicking thecorresponding button brings up the dialog box that lets you specify thespectral analysis options.The command panel’s stretch and squeeze buttons let you adjust thehorizontal and vertical scales of the plot shown in the active pane. To see moredetail in the frequency dimension of the spectrogram, first activate thespectrogram pane, then click on the vertical stretch button.When you click on the vertical stretch button, the spectrogram pane isredrawn with the vertical dimension stretched by a factor of two (in the caseof the western meadowlark spectrogram, the vertical axis shown now rangesfrom 0 to 5.5 kHz). The waveform pane remains unchanged. Notice that thevertical scroll bar has now become active; you can use it to scroll thespectrogram display up and down so that you can see whichever portion ofthe total frequency range you choose. Scroll bars in the signal window alwaysrefer to the active pane; each scroll bar is active only when the active panedoes not display all of the available data.Canary 1.2 User’s Manual 15