fix: fix mixed up f1, f2

beat.py

@@ -169,11 +169,12 @@ class RegularBeatFinder:
     def find_beat(self, fs, ssf_zxings, f_hint=None, debug_fe=False, debug_i=None):
         """Find the optimal beat frequency."""
         act_ibis = np.diff(ssf_zxings)
+        # nice-to: may be interesting to also use as score: the ssf amplitude info at the beats to which we aligned
         # evaluate mean absolute errors for all frequencies
         freqs, freq_errs = self._get_opt_ibi_freq_2(fs, act_ibis, debug_i)
         # bias with f_hint - once we know the beat freq, make it more likely for it to be found everywhere
         if f_hint is not None:
-            nf, f1, f2 = RegularBeatFinder.num_freqs, RegularBeatFinder.range_f2, RegularBeatFinder.range_f1
+            nf, f1, f2 = RegularBeatFinder.num_freqs, RegularBeatFinder.range_f1, RegularBeatFinder.range_f2
             bias = gauss(
                 nf,
                 (f_hint - f1) / (f2 - f1) * nf,