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

Appendix D: Troubleshootingfor files that they save with different types (e.g., see Canary’s icons in Chapter 7), butyou will have to consult the program’s documentation or do some experimenting tofigure out the correspondence between icons and file types.If the file you want does not show up in Canary’s Open File dialog box, open it in theprogram that originally created it and re-save it one of the formats listed above.Miscellaneous• When I launch Canary a message appears stating “Canary requires a floating-pointcoprocessor.”If you are using a 680x0 (non-PowerMac) Macintosh without a floating-point coprocessor(also known as a math co-processor or floating-point unit (FPU)), you shoulduse Canary 1.2 LC.• Sometimes the graphic display in one or more panes of a signal window getscorrupted.Occasionally a window's graphics become garbled or improperly drawn. In most cases,corrupted window graphics can be fixed by selecting the Redraw command from theWindows menu.• A recording device (e.g., MacRecorder) that is connected to the Macintosh does notappear on the Device pop-up menu in the Record dialog box.Every recording device should be supplied with a program called a device driver, usuallyin the form of a System Extension which enables the Macintosh to use the device. Inorder for Canary to use a recording device, its driver must be installed in the Systemfolder. See the documentation that came with your MacRecorder (or other device) forinstructions about installing the device driver.• Increasing the playback rate doesn’t seem to do anything.The Macintosh can play back sounds at any rate up to 64 kHz. This ceiling effectivelylimits the range of available playback rates. For example, if you have a sound sampledat ≈22 kHz, at best the Macintosh can play the sound back at about three times itsoriginal rate. Setting the rate slider to a larger factor will not increase the actual playbackrate.• Background colors seem to change for no reason.The sometimes bizarre behavior of colors within Canary is a byproduct of the way theMacintosh manages the color display when the hardware cannot display the full rangeof possible colors at once. The number of colors that a color monitor can display at oncedepends on the display card and the amount of video RAM (VRAM) installed in theMacintosh. Basically, colors change because there are not enough colors available tomeet the needs of all the running applications. This can be avoided by using displayCanary 1.2 User’s Manual 225