From 25949ed91488ca81b231b01dd8cf9f2a3645f347 Mon Sep 17 00:00:00 2001 From: joostvdm Date: Tue, 13 Dec 2022 00:14:46 +0100 Subject: [PATCH 1/3] Add missing definition of wx in last code cell --- .../session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/course1/session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb b/course1/session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb index c4dc9ef..6a8ff82 100644 --- a/course1/session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb +++ b/course1/session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb @@ -276,7 +276,8 @@ "window_size = 4096\n", "frame_index = 0\n", "sx = x[frame_index * window_size: (frame_index+1)*window_size]\n", - "`wsx = np.multiply(sx,wx)\n", + "wx = np.hanning(window_size)", + "wsx = np.multiply(sx,wx)\n", "plt.figure()\n", "plt.plot(sx)\n", "plt.plot(wsx)\n", From 51797d78a67ee3e001b76d2192a20a164a0680d4 Mon Sep 17 00:00:00 2001 From: joostvdm Date: Tue, 13 Dec 2022 00:16:08 +0100 Subject: [PATCH 2/3] Add missing newline --- .../session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/course1/session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb b/course1/session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb index 6a8ff82..d2f017b 100644 --- a/course1/session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb +++ b/course1/session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb @@ -276,7 +276,7 @@ "window_size = 4096\n", "frame_index = 0\n", "sx = x[frame_index * window_size: (frame_index+1)*window_size]\n", - "wx = np.hanning(window_size)", + "wx = np.hanning(window_size)\n", "wsx = np.multiply(sx,wx)\n", "plt.figure()\n", "plt.plot(sx)\n", From 94f99e997846d718b0ac912074f330ac7c455131 Mon Sep 17 00:00:00 2001 From: joostvdm Date: Tue, 13 Dec 2022 00:31:17 +0100 Subject: [PATCH 3/3] Correct definition of wx As seen in Session 2 video 7, 'Windowing, The Short-Time Fourier Transform, and Spectrograms', at 6:00 minutes --- .../session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/course1/session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb b/course1/session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb index d2f017b..473746a 100644 --- a/course1/session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb +++ b/course1/session2/kadenze_mir_c1_s2_7_mag_spectrum_star_wars.ipynb @@ -276,7 +276,7 @@ "window_size = 4096\n", "frame_index = 0\n", "sx = x[frame_index * window_size: (frame_index+1)*window_size]\n", - "wx = np.hanning(window_size)\n", + "wx = np.hanning(len(sx))\n", "wsx = np.multiply(sx,wx)\n", "plt.figure()\n", "plt.plot(sx)\n",