[NumPy] Remove references to deprecated NumPy type aliases.

hawkinsp · Magenta Team · commit 4c77f448495d · 2022-12-21T16:01:07.000-08:00
This change replaces references to a number of deprecated NumPy type aliases (np.bool, np.int, np.float, np.complex, np.object, np.str) with their recommended replacement (bool, int, float, complex, object, str).

NumPy 1.24 drops the deprecated aliases, so we must remove uses before updating NumPy.

PiperOrigin-RevId: 497026048
diff --git a/ddsp/colab/colab_utils.py b/ddsp/colab/colab_utils.py
@@ -231,7 +231,7 @@ def get_tuning_factor(f0_midi, f0_confidence, mask_on):
   ## Computes mininmum "note" transitions.
   f0_at = f0_midi[mask_on][:, np.newaxis] - midi_diffs
   f0_at_diffs = np.diff(f0_at, axis=0)
-  deltas = (f0_at_diffs != 0.0).astype(np.float)
+  deltas = (f0_at_diffs != 0.0).astype(float)
   cost_deltas = np.mean(weights[:-1] * deltas, axis=0)
 
   # Tuning factor is minimum cost.
diff --git a/ddsp/training/heuristics.py b/ddsp/training/heuristics.py
@@ -256,7 +256,7 @@ def strided_freq_change(controls,
   """Finds changes in f0 of >= 1 semitone across multiple strides."""
   f0 = np.squeeze(controls['f0_hz'].numpy())
   f0_midi = ddsp.core.hz_to_midi(f0)
-  transitions = np.ones(len(f0), dtype=np.bool)
+  transitions = np.ones(len(f0), dtype=bool)
   for frame_width in frame_widths:
     padded_f0 = pad_for_frame(
         f0_midi, mode=pad_mode, frame_width=frame_width, axis=0)
