Home Manual Packages Global Index Keywords Quick Reference | # functions in filter.i - t
to_db |
                 to_db(signal, ref)
              or to_db(signal)

         return 20.*log10(abs(SIGNAL)/REF), the number of decibels
         corresponding to the input SIGNAL.  REF defaults to 1.0.

    interpreted function, defined at i/filter.i   line 510
SEE ALSO: | fil_response, to_phase
to_phase |
                 to_phase(signal)
              or to_phase(signal, 1)

         return atan(SIGNAL.im,SIGNAL.re), the phase of the input SIGNAL.
         If the second argument is present and non-0, the phase will be in
         degrees; by default the phase is in radians.
         To_phase attempts to unroll any jumps from -180 to +180 degrees
         or vice-versa; zero phase will be taken somewhere near the middle
         of the signal.  The external variable to_phase_eps controls the
         details of this unrolling; you can turn off unrolling by setting
         to_phase_eps=0.0 (initially it is 0.3).

    interpreted function, defined at i/filter.i   line 524
SEE ALSO: | fil_response, to_phase