fixing const-interpolator again

Author: bmcfee

mir_eval/sonify.py

@@ -183,15 +183,14 @@ def time_frequency(
             bounds_error=False,
             fill_value=(gram[:, 0], gram[:, -1]),
         )
+        signal = interpolator(np.arange(length))
     else:
         # NOTE: This is a special case where there is only one time interval.
         # scipy 1.10 and above handle this case directly with the interp1d above,
         # but older scipy's do not. This is a workaround for that.
         #
         # In the 0.9 release, we can bump the minimum scipy to 1.10 and remove this
-        interpolator = _const_interpolator(gram[:, 0])
-
-    signal = interpolator(np.arange(length))
+        signal = np.tile(gram[:, 0], (1, length))
 
     for n, frequency in enumerate(frequencies):
         # Get a waveform of length samples at this frequency
@@ -213,17 +212,6 @@ def time_frequency(
     return output
 
 
-def _const_interpolator(value):
-    """Return a function that returns `value`
-    no matter the input.
-    """
-
-    def __interpolator(x):
-        return value
-
-    return __interpolator
-
-
 def _fast_synthesize(frequency, n_dec, fs, function, length):
     """Efficiently synthesize a signal.
     Generate one cycle, and simulate arbitrary repetitions