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

Chapter 11: Batch ProcessingCorrelator optionsAfter you specify the output destination, the batch version of the CorrelatorOptions dialog box appears (Figure 11.7). Either the waveform or spectrogrambutton is checked automatically, depending on which type of input youselected in the previous two dialog boxes. For spectrogram correlations, theOptions... button displays the parameters (i.e., resolution, window function,etc.) used to compute the spectrogram in the first input file. All of thespectrograms to be used as input must have the same parameters, or an errorwill occur.Figure 11.7. The batch spectrogram Correlator Options dialog box.The Filter, Normalize, and Complex Envelope checkboxes are discussed inChapter 7.When you click on the OK button, Canary starts calculating the correlationsand displays a status window titled “Batch Correlator”, which shows theprogress of the calculations. The progress bar in the status window shows theprogress of the entire batch process; the text in the window shows which twofiles are currently being correlated. Clicking the Pause button in the statuswindow makes the Cancel button available. Clicking the Cancel button abortsthe batch correlation.If you are correlating the contents of a folder with itself, Canary calculatesonly the unique correlations (i.e., it does not calculate both X*Y and Y*X, sincethese are the same); however, the resulting array does contain the redundantvalues.The order in which files are processed for a batch correlation (and hence theorder in which they are listed in the correlation table) depends on the sizes ofthe files and memory availability and is generally not predictable.Canary 1.2 User’s Manual 151