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Bird song recognition with hidden Markov models
Thesis (MScEng (Electrical and Electronic Engineering))--Stellenbosch University, 2008.
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| Format: | Thesis |
| Language: | English |
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Stellenbosch : Stellenbosch University
2008
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| _version_ | 1867613739532943360 |
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| access_status_str | Open Access |
| author | Van der Merwe, Hugo Jacobus |
| author2 | Schwardt, L. |
| author_browse | Schwardt, L. Van der Merwe, Hugo Jacobus |
| author_facet | Schwardt, L. Van der Merwe, Hugo Jacobus |
| author_sort | Van der Merwe, Hugo Jacobus |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MScEng (Electrical and Electronic Engineering))--Stellenbosch University, 2008. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/2399 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:40:56.191Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/2399 Bird song recognition with hidden Markov models Van der Merwe, Hugo Jacobus Schwardt, L. Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. Bird song recognition Hidden Markov models Computer sound processing Tune recognition Dissertations -- Electronic engineering Theses -- Electronic engineering Electrical and Electronic Engineering Thesis (MScEng (Electrical and Electronic Engineering))--Stellenbosch University, 2008. Automatic bird song recognition and transcription is a relatively new field. Reliable automatic recognition systems would be of great benefit to further research in ornithology and conservation, as well as commercially in the very large birdwatching subculture. This study investigated the use of Hidden Markov Models and duration modelling for bird call recognition. Through use of more accurate duration modelling, very promising results were achieved with feature vectors consisting of only pitch and volume. An accuracy of 51% was achieved for 47 calls from 39 birds, with the models typically trained from only one or two specimens. The ALS pitch tracking algorithm was adapted to bird song to extract the pitch. Bird song synthesis was employed to subjectively evaluate the features. Compounded Selfloop Duration Modelling was developed as an alternative duration modelling technique. For long durations, this technique can be more computationally efficient than Ferguson stacks. The application of approximate string matching to bird song was also briefly considered. 2008-06-23T13:43:03Z 2010-06-01T08:47:55Z 2008-06-23T13:43:03Z 2010-06-01T08:47:55Z 2008-03 Thesis http://hdl.handle.net/10019.1/2399 en Stellenbosch University application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Bird song recognition Hidden Markov models Computer sound processing Tune recognition Dissertations -- Electronic engineering Theses -- Electronic engineering Electrical and Electronic Engineering Van der Merwe, Hugo Jacobus Bird song recognition with hidden Markov models |
| title | Bird song recognition with hidden Markov models |
| title_full | Bird song recognition with hidden Markov models |
| title_fullStr | Bird song recognition with hidden Markov models |
| title_full_unstemmed | Bird song recognition with hidden Markov models |
| title_short | Bird song recognition with hidden Markov models |
| title_sort | bird song recognition with hidden markov models |
| topic | Bird song recognition Hidden Markov models Computer sound processing Tune recognition Dissertations -- Electronic engineering Theses -- Electronic engineering Electrical and Electronic Engineering |
| url | http://hdl.handle.net/10019.1/2399 |
| work_keys_str_mv | AT vandermerwehugojacobus birdsongrecognitionwithhiddenmarkovmodels |