A query to the selected Ltas object.
the mean value (in dB) within a specified frequency range.
The mean value between the frequencies f1 and f2 is defined as
|1/(f2 - f1) ∫f1f2 df x(f)|
where x(f) is the LTAS as a function of frequency, expressed in dB. For our discrete Ltas object, this mean is approximated by
|1/n ∑i=m..m+n-1 xi|
where n is the number of band centres between f1 and f2.
© ppgb, November 22, 2004