Lorrca MaxSis - Syllectogram Options

Lorrca MaxSis Program
Lorrca Maxsis User Manual Page 63
Version 5.04 MRN-231-EN
6.4.4.2. Syllectogram options
Settings parameter Description Range
Logarithmic time axis Check to obtain a logarithmic time scale for the
syllectogram. Remove check mark for linear time
scale.
Checkbox
Draw syllectogram fit
If checked, the syllectogram is superimposed by the
result of exponential fitting, using the selected
"Syllectogram model (see below).
Checkbox
Sample rate (Hz)
Number of samples to take per second when
measuring the syllectogram curve. Must be high
enough to record fastest details (the peak) of the
syllectogram.
[10, 1000] Hz
Syllectogram duration
(s)
Syllectogram measurement duration.
[1, 3600] s
Syllectogram fitting
A
UTO:
In auto-mode, all models are evaluated and the
program will present the best fitting model. The
result of other models can still be examined and
printed.
Mathematical model used to fit the syllectogram:
 Tri-exponential (rise-fall-fall)
 Bi-exponential (rise-fall)
 Bi-exponential (fall-fall).
 Uni-exponential (rise)
 Uni-exponential (fall)
See Appendix Additional Information section Tri-
exponential syllectogram representation (on
page 208)
-
Max Error Of Fit (au) It is evaluated whether or not each of the fitting
models was successful from the error-of-fit
parameter (EOF). Since the syllectogram is sampled
uniformly most data points stem from the tail of the
curve. To prevent the fitting algorithm from focusing
on this region, the curves were re-sampled by
selecting 300 points uniformly distributed on a
logarithmic time scale. The EOF is defined as the
root of the mean square sum of these 300 samples.
[0.01, 100] au