{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "import numpy, scipy, IPython.display as ipd"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "[← Back to Index](index.html)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Why Music Information Retrieval?"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "While you listen to these excerpts, name as many of its musical characteristics as you can:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "\n",
       "        <iframe\n",
       "            width=\"400\"\n",
       "            height=\"300\"\n",
       "            src=\"https://www.youtube.com/embed/ajCYQL8ouqw\"\n",
       "            frameborder=\"0\"\n",
       "            allowfullscreen\n",
       "        ></iframe>\n",
       "        "
      ],
      "text/plain": [
       "<IPython.lib.display.YouTubeVideo at 0x10a152250>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "ipd.display( ipd.YouTubeVideo(\"ajCYQL8ouqw\") )"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "([Chords](http://chordify.net/chords/beatles-let-it-be-hippiegirl34))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Another:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "\n",
       "        <iframe\n",
       "            width=\"400\"\n",
       "            height=\"300\"\n",
       "            src=\"https://www.youtube.com/embed/PrVu9WKs498?start=8\"\n",
       "            frameborder=\"0\"\n",
       "            allowfullscreen\n",
       "        ></iframe>\n",
       "        "
      ],
      "text/plain": [
       "<IPython.lib.display.YouTubeVideo at 0x10a152390>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "ipd.display( ipd.YouTubeVideo(\"PrVu9WKs498\", start=8) )"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "One more:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "\n",
       "        <iframe\n",
       "            width=\"400\"\n",
       "            height=\"300\"\n",
       "            src=\"https://www.youtube.com/embed/Cxj8vSS2ELU?start=540\"\n",
       "            frameborder=\"0\"\n",
       "            allowfullscreen\n",
       "        ></iframe>\n",
       "        "
      ],
      "text/plain": [
       "<IPython.lib.display.YouTubeVideo at 0x10a152250>"
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     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "ipd.display( ipd.YouTubeVideo(\"Cxj8vSS2ELU\", start=540) )"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Why MIR?"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "- discover, organize, monetize media collections\n",
    "- search (\"find me something that sounds like this\")\n",
    "    - songs, loops, speech, environmental sounds, sound effects\n",
    "- workflows\tin consumer products through machine hearing\n",
    "- automatic control of software and mobile devices"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## What is MIR?"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "- fingerprinting\n",
    "- cover song detection\n",
    "- genre recognition\n",
    "- transcription\n",
    "- recommendation\n",
    "- symbolic melodic similarity\n",
    "- mood\n",
    "- source separation\n",
    "- instrument recognition \n",
    "- pitch tracking\n",
    "- tempo estimation\n",
    "- score alignment\n",
    "- song structure/form\n",
    "- beat tracking\n",
    "- key detection\n",
    "- query by humming"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Commercial Applications"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Example: [RiffStation](http://www.riffstation.com/)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "\n",
       "        <iframe\n",
       "            width=\"400\"\n",
       "            height=\"300\"\n",
       "            src=\"https://www.youtube.com/embed/ECvinPjmBVE?start=6\"\n",
       "            frameborder=\"0\"\n",
       "            allowfullscreen\n",
       "        ></iframe>\n",
       "        "
      ],
      "text/plain": [
       "<IPython.lib.display.YouTubeVideo at 0x10a152390>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "ipd.display( ipd.YouTubeVideo(\"ECvinPjmBVE\", start=6) )"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Example: [Melodyne](http://www.celemony.com/en/start)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "\n",
       "        <iframe\n",
       "            width=\"400\"\n",
       "            height=\"300\"\n",
       "            src=\"https://www.youtube.com/embed/DiW6XVFeFgo?start=60\"\n",
       "            frameborder=\"0\"\n",
       "            allowfullscreen\n",
       "        ></iframe>\n",
       "        "
      ],
      "text/plain": [
       "<IPython.lib.display.YouTubeVideo at 0x10a1523d0>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "ipd.display( ipd.YouTubeVideo(\"DiW6XVFeFgo\", start=60))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Example: [Auto-Tune](http://www.antarestech.com/)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "\n",
       "        <iframe\n",
       "            width=\"400\"\n",
       "            height=\"300\"\n",
       "            src=\"https://www.youtube.com/embed/YDjsoZKlG04?start=155\"\n",
       "            frameborder=\"0\"\n",
       "            allowfullscreen\n",
       "        ></iframe>\n",
       "        "
      ],
      "text/plain": [
       "<IPython.lib.display.YouTubeVideo at 0x10a1521d0>"
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     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "ipd.display( ipd.YouTubeVideo(\"YDjsoZKlG04\", start=155))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Example: Key Detection and Auto-harmonization with [iZotope Nectar 2](https://www.izotope.com/nectar2)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "\n",
       "        <iframe\n",
       "            width=\"400\"\n",
       "            height=\"300\"\n",
       "            src=\"https://www.youtube.com/embed/TG-ivjyyYhM?start=35\"\n",
       "            frameborder=\"0\"\n",
       "            allowfullscreen\n",
       "        ></iframe>\n",
       "        "
      ],
      "text/plain": [
       "<IPython.lib.display.YouTubeVideo at 0x10a152090>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "ipd.display( ipd.YouTubeVideo(\"TG-ivjyyYhM\", start=35))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Example: [Humtap](http://www.humtap.com)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "\n",
       "        <iframe\n",
       "            width=\"400\"\n",
       "            height=\"300\"\n",
       "            src=\"https://player.vimeo.com/video/96140435\"\n",
       "            frameborder=\"0\"\n",
       "            allowfullscreen\n",
       "        ></iframe>\n",
       "        "
      ],
      "text/plain": [
       "<IPython.lib.display.VimeoVideo at 0x10a152110>"
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     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "ipd.display( ipd.VimeoVideo(\"96140435\") )"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "[&larr; Back to Index](index.html)"
   ]
  }
 ],
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