ISSS608 2017-18 T3 Assign Yejerla Amrutha Rajeshwari call
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VAST Mini Challenge 1: "Cheep" Shots?
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Approach
- Since we have bird recordings submitted by the Ornithology group and also the corresponding quality score, creating a spectograph for individual components of good quality recordings allows for visually profiling each species' calls and songs.
- There are 5 categories in quality score but description of these categories are not provided. Taking few samples in each category and running the autodetec() function on them revealed that category "A" recordings have good quality.
- Atleast 4 recordings for each species- 2 calls, 2 songs(or any other distribution applicable based on the species) are sampled. Components are retrieved and top 5 components based on Signal to Noise ratio are selected. Few most representative spectrographs of each species are documented for comparisons with test recordings.
Species Call-Song Spectrographs
| No | Species | Spectrograph |
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1. |
Bent beak Riffraff |  
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2. |
Blue collared Zipper |  
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3. |
Bombadil |  
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4. |
Broad winged Jojo |  
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5. |
Canadian Cootamum |  
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6. |
Carries Champagne Pipit |  
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7. |
Darkwing Sparrow |  
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8. |
Eastern Corn Skeet |  
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9. |
Green tipped Scarlet Pipit |  
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10. |
Lesser Birchbeere |  
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11. |
Orange Pine Plove |  
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12. |
Ordinary Snape |  
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13. |
Pinkfinch |  
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14. |
Purple Tooting Tout |  
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15. |
Qax |  
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16. |
Queenscoat |  
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17. |
Rose crested Blue Pipit |  
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18. |
Scrawny Jay |  
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19. |
Vermillion Trillia |  
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Species detection for Test files
| Test File No | Spectrograph | Top 5 extracts(SNR) | Evidence |
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1. |
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Only Bent beak Riffraff found
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2. |
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Rose crested Blue Pipit along with others |
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3. |
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Not Rose crested Blue Pipit
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4. |
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Not Rose crested Blue Pipit
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5. |
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Could be Bombadil
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6. |
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Lesser Birchbeere |
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7. |
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Qax |
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8. |
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Lesser Birchbeere |
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9. |
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Rose crested Blue Pipit & Ordinary Snape
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10. |
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could be Green tipped Scarlet Pipit
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11. |
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Scrawny Jay
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12. |
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Bombadil |
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13. |
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Darkwing Sparrow
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14. |
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Broad winged Jojo
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15. |
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Bent beak Riffraff |
From the above table, it is evident that at most 2 or 3 recordings belong to Rose crested Blue Pipit. Why did Kaisos officials lie?
