Fixed stft bug in mixture on REPET page

Author: noahschaffer

book/first_steps/repetition.ipynb

@@ -217,6 +217,7 @@
     "fg_mask_arr = fg_mask.mask\n",
     "\n",
     "# Multiply the masks to the magnitude spectrogram\n",
+    "mix.stft()\n",
     "mix_mag_spec = mix.magnitude_spectrogram_data\n",
     "bg_no_phase_spec = mix_mag_spec * bg_mask_arr\n",
     "fg_no_phase_spec = mix_mag_spec * fg_mask_arr\n",
@@ -1076,7 +1077,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.2"
+   "version": "3.8.1"
   }
  },
  "nbformat": 4,