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

Chapter 12: ReferenceSave Text Report dialog box: Report Title field and checkboxIf Report Title is checked, the specified text is included on one line at the top of the text report filethat is written. You can enter whatever text you want for the report title. Note that the report title isnot the name of the file to be saved (although it may be the same); the file name is specified in astandard Save File dialog box that appears after you click OK in the Save Text Report dialog box.Save Text Report dialog box: Units checkboxIf this box is checked, each individual measurement will be labeled with appropriate units (e.g., S,V, dB, etc.). If the Prefix box is also checked, the unit label may be preceded by a prefix (e.g., µS,mV). If the Units box is unchecked, the column headers (if present) will include the unscaled units(e.g., S or V, but never mS or mV) and individual measurements will appear as unlabeled numbers.If units are used with no prefixes, small values may be written as zeros (see discussion of Prefixcheckbox).Scale Spectrogram dialog boxSee Manual Scaling dialog box.Scale Spectrum dialog boxSee Manual Scaling dialog box.Scale Waveform dialog boxSee Manual Scaling dialog box.Set Calibration dialog box: Air buttonWhen the Sound calibration paradigm is selected, the Air button sets characteristic impedance to400 rayls, pressure dB reference value to 20 µPa, and the intensity dB reference value to 1 pW/m 2 .Set Calibration dialog box: Apply Default buttonSets the values of all parameters in the dialog to the default values specified in the currentpreference file.Set Calibration dialog box: Characteristic Impedance fieldThe characteristic impedance of the medium in which a sound was recorded, measured in mksrayls. Characteristic impedance is equal to the product of ρ, the medium’s density (in kg/m 3 ) and c,the speed of sound in the medium (in m/sec). The characteristic impedance (ρc) of the mediumdetermines the relationship between RMS pressure (p, in pascals) of a signal and the signal’saverage intensity (I, in watts/m 2 ) according to the formulaI = p 2ρc (12.1)When the Electricity rather than Sound paradigm is selected, Characteristic Impedance is replacedby (electrical) impedance.Set Calibration dialog box: Fresh Water buttonWhen the Sound calibration paradigm is selected, the Fresh Water button sets characteristicimpedance to a typical value for fresh water, 1.4639 Mrayls, pressure dB reference value to 1 µPa(the standard value for underwater measurements), and the intensity dB reference value to .6831Canary 1.2 User’s Manual 175