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

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

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Chapter 6: Measurementscorrelated, minus one. For a spectrogram correlation, Length in Samplesequals the sum <strong>of</strong> the number <strong>of</strong> frames in the spectrograms that werecorrelated, minus one.Length in Samples (waveform)Number <strong>of</strong> digitized samples in the entire signal. The number <strong>of</strong> samples in asignal equals the signal’s duration times the sampling rate.Log Scale? (spectrogram, spectrum)<strong>Lab</strong>elled “Amplitude” in measurement panel. Type <strong>of</strong> amplitude scale <strong>of</strong> theactive spectrogram or spectrum pane; displays “Quadratic” or “Logarithmic”.Normalized? (correlation)Displays “Yes” or “No” to indicate whether the plotted correlation values arenormalized.Number <strong>of</strong> Frames (spectrogram, spectrum)The number <strong>of</strong> STFT frames from which the active spectrogram or spectrumwas calculated. For a spectrogram, equivalent to the number <strong>of</strong> (possiblyoverlapping) “time slices,” which is determined by the signal length, framelength, and frame overlap. For a spectrum, Number <strong>of</strong> Frames is determinedby the duration <strong>of</strong> the selection from which the spectrum was made, the framelength, and the frame overlap.Overlap (spectrogram, spectrum)The percentage overlap between successive STFT frames in a spectrogram orspectrum.Pane (all)Displays “Waveform”, “Spectrogram”, “Spectrum”, or “Correlation”,depending on which measurement panel is currently displayed.Sample Size (waveform)The number <strong>of</strong> bits per sample in the signal when it was originally digitized orimported into Canary.Sampling Frequency (all)Number <strong>of</strong> digital samples per second with which the signal was digitized.Units: Hz.Start Time (spectrum)The time (measured from the beginning <strong>of</strong> the signal) at which the spectrumsource interval begins. Units: seconds.Canary 1.2 User’s <strong>Manual</strong> 91

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