try with previews

webbook/resources/exploring-performance.ipynb

@@ -89,7 +89,7 @@
    "source": [
     "url = \"https://drive.google.com/uc?id=1iR0bfxDLQbH8fEeHU_GFsg2kh7brZ0HZ&export=download\"\n",
     "output =  os.path.join(AUDIO_PATH,  \"dr-brindha-manickavasakan.zip\")\n",
-    "gdown.download(url, output, quiet=False) "
+    "gdown.download(url, output, quiet=False)"
    ]
   },
   {
@@ -134,7 +134,9 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "For 100s of performances in the Saraga dataset, the audio stems corresponding to each instrument/perfromer are available. In this performance, this constitutes the lead vocal, the mridangam (left and right microphone), the violin, and the tanpura. The full mix of all instruments is also available."
+    "For 100s of performances in the Saraga dataset, the audio stems corresponding to each instrument/perfromer are available. In this performance, this constitutes the lead vocal, the mridangam (left and right microphone), the violin, and the tanpura. The full mix of all instruments is also available.\n",
+    "\n",
+    "Let us select the preview versions of the multitrack audio, which are shortened and compressed versions of the rendition for easier handling of the previsualisation."
    ]
   },
   {
@@ -143,12 +145,12 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "audio_path = os.path.join(folder_path, f\"{rendition}.wav\")\n",
-    "mrid_left_path = os.path.join(folder_path, f\"{rendition}.mridangam-left.wav\")\n",
-    "mrid_right_path = os.path.join(folder_path, f\"{rendition}.mridangam-right.wav\")\n",
-    "violin_path = os.path.join(folder_path, f\"{rendition}.multitrack-violin.wav\")\n",
-    "vocal_path = os.path.join(folder_path, f\"{rendition}.multitrack-vocal.wav\")\n",
-    "tanpura_path = os.path.join(folder_path, f\"{rendition}.tanpura.wav\")"
+    "audio_path_pre = os.path.join(folder_path, \"preview\", f\"{rendition}.mp3\")\n",
+    "mrid_left_path_pre = os.path.join(folder_path, \"preview\", f\"{rendition}.mridangam-left.mp3\")\n",
+    "mrid_right_path_pre = os.path.join(folder_path, \"preview\", f\"{rendition}.mridangam-right.mp3\")\n",
+    "violin_path_pre = os.path.join(folder_path, \"preview\", f\"{rendition}.multitrack-violin.mp3\")\n",
+    "vocal_path_pre = os.path.join(folder_path, \"preview\", f\"{rendition}.multitrack-vocal.mp3\")\n",
+    "tanpura_path_pre = os.path.join(folder_path, \"preview\", f\"{rendition}.tanpura.mp3\")"
    ]
   },
   {
@@ -181,7 +183,13 @@
    "outputs": [],
    "source": [
     "# list of paths to load and listen\n",
-    "all_audio_paths = [vocal_path, violin_path, mrid_left_path, mrid_right_path, tanpura_path]\n",
+    "all_audio_paths = [\n",
+    "    vocal_path_pre,\n",
+    "    violin_path_pre,\n",
+    "    mrid_left_path_pre,\n",
+    "    mrid_right_path_pre,\n",
+    "    tanpura_path_pre\n",
+    "]\n",
     "# List of labels for each path\n",
     "all_names = [\"Vocal\", \"Violin\", \"Mridangam left\", \"Mridangam right\", \"Tanpura\"]"
    ]
@@ -355,7 +363,19 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "In this section we extract various audio and musical features from the raw performance audio; the singer tonic, raga, predominant pitch track of the lead vocal melody, source separated vocal audio, downbeat, and repeated melodic patterns."
+    "In this section we extract various audio and musical features from the raw performance audio; the singer tonic, raga, predominant pitch track of the lead vocal melody, source separated vocal audio, downbeat, and repeated melodic patterns.\n",
+    "\n",
+    "Let's first get the path of the full and uncompressed mixture and vocal tracks."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "audio_path = os.path.join(folder_path, f\"{rendition}.wav\")\n",
+    "vocal_path = os.path.join(folder_path, f\"{rendition}.multitrack-vocal.wav\")"
    ]
   },
   {