Merge branch 'fix-bug-at-init' into 'master'

Fix interpolation init

See merge request !17

lisainstrument/instrument.py

@@ -186,7 +186,8 @@ class Instrument:
                 logging.debug("Using Lagrange interpolation of order %s", self.interpolation_order)
                 self.interpolate = lambda x, shift: \
                     x if numpy.isscalar(x) else dsp.timeshift(x, shift, self.interpolation_order)
-            raise ValueError(f"invalid interpolation parameters '{interpolation}'")
+            else:
+                raise ValueError(f"invalid interpolation parameters '{interpolation}'")
 
     def init_aafilter(self, aafilter):
         """Initialize antialiasing filter and downsampling."""