Description

SloppyUpsampler.ipynb

@@ -19,10 +19,10 @@
         "#<font face=\"Trebuchet MS\" size=\"6\">Sloppy Upsampler <font color=\"#999\" size=\"4\">&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;</font><font color=\"#999\" size=\"4\">Audio upsampler</font><font color=\"#999\" size=\"4\">&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;</font><a href=\"https://github.com/olaviinha/SloppyButchery\" target=\"_blank\"><font color=\"#999\" size=\"4\">Github</font></a>\n",
         "\n",
         "Poor man's upsampling & highs restoration by traditional methods: \n",
-        "- convert to 44.1 kHz with interpolation filter ffmpeg -dither_scale 1 -resampler 'swr' -filter_size 32 -phase_shift 10\n",
-        "- pitch up one octave with librosa resample type soxr_hq\n",
-        "- highpass above 10k\n",
-        "- mix on original with low volume (~ 10 %)"
+        "- convert to 44.1 kHz with a decent interpolation filter (`ffmpeg -dither_scale 1 -resampler 'swr' -filter_size 32 -phase_shift 10`)\n",
+        "- pitch up one octave with very high quality (`librosa soxr_vhq`)\n",
+        "- highpass above 10kHz\n",
+        "- mix on original with low volume (50% vol highpass on 80% total vol)"
       ]
     },
     {
@@ -117,7 +117,7 @@
         "    sr = fs\n",
         "  else:\n",
         "    data, sr = librosa.load(input, sr=None, mono=False)\n",
-        "  octave_up = librosa.effects.pitch_shift(data, sr=sr, n_steps=12) * hipass_vol\n",
+        "  octave_up = librosa.effects.pitch_shift(data, sr=sr, n_steps=12, res_type='soxr_vhq') * hipass_vol\n",
         "  hipass = highpass_audio(octave_up, cutoff, fx, order)\n",
         "  return data*mix_vol+hipass\n",
         "\n",
@@ -130,6 +130,7 @@
       "cell_type": "code",
       "execution_count": null,
       "metadata": {
+        "cellView": "form",
         "id": "Znu4P-Gtsdrr"
       },
       "outputs": [],
@@ -221,7 +222,7 @@
     "colab": {
       "provenance": [],
       "mount_file_id": "1KsC80bOcnAJ9K5UfpsF_saOywtPg7qT8",
-      "authorship_tag": "ABX9TyOk8pJ8GXWxxomD83BXRyqp",
+      "authorship_tag": "ABX9TyOqC6Mfjnh5x68XQLxKITGc",
       "include_colab_link": true
     },
     "kernelspec": {