def _iter_frequencies(self):
<EOL>minf, maxf = self.frange<EOL>fcum_mismatch = log(maxf / minf) * (<NUM_LIT:2> + self.q**<NUM_LIT:2>)**(<NUM_LIT:1>/<NUM_LIT>) / <NUM_LIT><EOL>nfreq = int(max(<NUM_LIT:1>, ceil(fcum_mismatch / self.deltam)))<EOL>fstep = fcum_mismatch / nfreq<EOL>fstepmin = <NUM_LIT:1> / self.duration<EOL>for i in xrange(nfreq):<EOL><INDENT>yield (minf *<EOL>exp(<NUM_LIT:2> / (<NUM_LIT:2> + self.q**<NUM_LIT:2>)**(<NUM_LIT:1>/<NUM_LIT>) * (i + <NUM_LIT>) * fstep) //<EOL>fstepmin * fstepmin)<EOL><DEDENT>
Iterate over the frequencies of this `QPlane`