{
  "id": 174187,
  "title": "how distance affects snr of birdsong spectrogram ",
  "url": "/competitions/birdsong-recognition/discussion/174187",
  "author_name": "",
  "post_date": "2020-08-12T15:35:26.205209900Z",
  "votes": 26,
  "comment_count": 3,
  "views": 0,
  "content": "<p>check this paper! it gives a clue on how to do noise augmentation</p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2F7726b28c7b6df40acb724600caeb8712%2FSelection_126.png?generation=1597246503207749&amp;alt=media\" alt=\"\"></p>\n<p><a href=\"https://onlinelibrary.wiley.com/doi/full/10.1002/ece3.3889\" target=\"_blank\">https://onlinelibrary.wiley.com/doi/full/10.1002/ece3.3889</a></p>",
  "messages": [
    {
      "id": "967930",
      "postDate": "08/12/2020 15:35:26",
      "content": "<p>check this paper! it gives a clue on how to do noise augmentation</p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2F7726b28c7b6df40acb724600caeb8712%2FSelection_126.png?generation=1597246503207749&amp;alt=media\" alt=\"\"></p>\n<p><a href=\"https://onlinelibrary.wiley.com/doi/full/10.1002/ece3.3889\" target=\"_blank\">https://onlinelibrary.wiley.com/doi/full/10.1002/ece3.3889</a></p>",
      "rawMarkdown": "check this paper! it gives a clue on how to do noise augmentation\n\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2F7726b28c7b6df40acb724600caeb8712%2FSelection_126.png?generation=1597246503207749&amp;alt=media)\n\nhttps://onlinelibrary.wiley.com/doi/full/10.1002/ece3.3889",
      "votes": null
    },
    {
      "id": "969794",
      "postDate": "08/14/2020 00:26:37",
      "content": "<p>Thank you. The figure 4 looks like a wave dispersion.  <br>\nBird song propagates in the air and the wavelength gets longer (the frequency gets lower). And the intensity (brightness of spectrogram) is also reduced. <br>\nwe can do this by resizing height, slight rotation, change brightness, and adding pink noise.</p>",
      "rawMarkdown": "Thank you. The figure 4 looks like a wave dispersion.  \nBird song propagates in the air and the wavelength gets longer (the frequency gets lower). And the intensity (brightness of spectrogram) is also reduced. \nwe can do this by resizing height, slight rotation, change brightness, and adding pink noise.",
      "votes": null
    },
    {
      "id": "971358",
      "postDate": "08/15/2020 12:54:20",
      "content": "<p>Thanks for sharing Sir.</p>",
      "rawMarkdown": "Thanks for sharing Sir.",
      "votes": null
    },
    {
      "id": "972389",
      "postDate": "08/16/2020 14:10:12",
      "content": "<p><a href=\"http://bioacoustic.abmi.ca/wp-content/uploads/2018/08/Classification-threshold-and-training-data-affect-the-quality-and-utility-of-focal-species-data-processed-with-automated-audio-recognition-software.pdf\" target=\"_blank\">http://bioacoustic.abmi.ca/wp-content/uploads/2018/08/Classification-threshold-and-training-data-affect-the-quality-and-utility-of-focal-species-data-processed-with-automated-audio-recognition-software.pdf</a></p>\n<p>accuracy on far/near test data for models trained with  far/near bird train data</p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2F238ed909af2fe8832a3017cd9d50c1e3%2FSelection_044.png?generation=1597586976623680&amp;alt=media\" alt=\"\"></p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2Faf318ab5a259dec6d0beaf5860a3d415%2FSelection_045.png?generation=1597586993169771&amp;alt=media\" alt=\"\"></p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2F450a8c8572be4633f365582d5252c9b0%2FSelection_046.png?generation=1597587009147548&amp;alt=media\" alt=\"\"></p>",
      "rawMarkdown": "http://bioacoustic.abmi.ca/wp-content/uploads/2018/08/Classification-threshold-and-training-data-affect-the-quality-and-utility-of-focal-species-data-processed-with-automated-audio-recognition-software.pdf\n\naccuracy on far/near test data for models trained with  far/near bird train data\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2F238ed909af2fe8832a3017cd9d50c1e3%2FSelection_044.png?generation=1597586976623680&alt=media)\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2Faf318ab5a259dec6d0beaf5860a3d415%2FSelection_045.png?generation=1597586993169771&alt=media)\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2F450a8c8572be4633f365582d5252c9b0%2FSelection_046.png?generation=1597587009147548&alt=media)",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 969794,
      "author_name": "woosungyoon",
      "author_url": "",
      "post_date": "08/14/2020 00:26:37",
      "content": "<p>Thank you. The figure 4 looks like a wave dispersion.  <br>\nBird song propagates in the air and the wavelength gets longer (the frequency gets lower). And the intensity (brightness of spectrogram) is also reduced. <br>\nwe can do this by resizing height, slight rotation, change brightness, and adding pink noise.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 971358,
      "author_name": "palaksood97",
      "author_url": "",
      "post_date": "08/15/2020 12:54:20",
      "content": "<p>Thanks for sharing Sir.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 972389,
      "author_name": "hengck23",
      "author_url": "",
      "post_date": "08/16/2020 14:10:12",
      "content": "<p><a href=\"http://bioacoustic.abmi.ca/wp-content/uploads/2018/08/Classification-threshold-and-training-data-affect-the-quality-and-utility-of-focal-species-data-processed-with-automated-audio-recognition-software.pdf\" target=\"_blank\">http://bioacoustic.abmi.ca/wp-content/uploads/2018/08/Classification-threshold-and-training-data-affect-the-quality-and-utility-of-focal-species-data-processed-with-automated-audio-recognition-software.pdf</a></p>\n<p>accuracy on far/near test data for models trained with  far/near bird train data</p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2F238ed909af2fe8832a3017cd9d50c1e3%2FSelection_044.png?generation=1597586976623680&amp;alt=media\" alt=\"\"></p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2Faf318ab5a259dec6d0beaf5860a3d415%2FSelection_045.png?generation=1597586993169771&amp;alt=media\" alt=\"\"></p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2F450a8c8572be4633f365582d5252c9b0%2FSelection_046.png?generation=1597587009147548&amp;alt=media\" alt=\"\"></p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "967930": "check this paper! it gives a clue on how to do noise augmentation\n\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2F7726b28c7b6df40acb724600caeb8712%2FSelection_126.png?generation=1597246503207749&amp;alt=media)\n\nhttps://onlinelibrary.wiley.com/doi/full/10.1002/ece3.3889",
    "969794": "Thank you. The figure 4 looks like a wave dispersion.  \nBird song propagates in the air and the wavelength gets longer (the frequency gets lower). And the intensity (brightness of spectrogram) is also reduced. \nwe can do this by resizing height, slight rotation, change brightness, and adding pink noise.",
    "971358": "Thanks for sharing Sir.",
    "972389": "http://bioacoustic.abmi.ca/wp-content/uploads/2018/08/Classification-threshold-and-training-data-affect-the-quality-and-utility-of-focal-species-data-processed-with-automated-audio-recognition-software.pdf\n\naccuracy on far/near test data for models trained with  far/near bird train data\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2F238ed909af2fe8832a3017cd9d50c1e3%2FSelection_044.png?generation=1597586976623680&alt=media)\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2Faf318ab5a259dec6d0beaf5860a3d415%2FSelection_045.png?generation=1597586993169771&alt=media)\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F113660%2F450a8c8572be4633f365582d5252c9b0%2FSelection_046.png?generation=1597587009147548&alt=media)"
  },
  "source": "meta"
}