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Voice activity detection
Mitáček, Štěpán ; Pfeifer, Václav (referee) ; Míča, Ivan (advisor)
This work dreals with the comparison of different detection methods of speach from various audio recordings. In comparing it assesses not only the high of adjusted threshold during deciding, but also the size of individual segments to which the audiotape spreads. Detection of individual recordings can be various in different speakers and also if the interference noise occurs in the recording or not. Finaly it should be compared, which one of the tested methods is the most precise. .
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Modern Speech/pause Detectors
Adamec, Michal ; Smékal, Zdeněk (referee) ; Rajmic, Pavel (advisor)
This masters theses deals with standard detection methods of speech/pause - voice activity detectors are based on the principles of short-time energy, real spectrum, short-time intensity and on a combinations of these three detectors. In the next parts, there are mentioned other voice activity detectors based on hidden Markovov‘s models and a detector described in the ITU-T G.729 standard. All the detectors, mentioned above, were implemented in research environment MATLAB. Further there was created an user interface for testing functions of the implemented detectors. Finally, there was done an evaluation by ROC characteristics according to the results of the testing.
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Voice activity detection
Mitáček, Štěpán ; Pfeifer, Václav (referee) ; Míča, Ivan (advisor)
This work dreals with the comparison of different detection methods of speach from various audio recordings. In comparing it assesses not only the high of adjusted threshold during deciding, but also the size of individual segments to which the audiotape spreads. Detection of individual recordings can be various in different speakers and also if the interference noise occurs in the recording or not. Finaly it should be compared, which one of the tested methods is the most precise. .
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Modern Speech/pause Detectors
Adamec, Michal ; Smékal, Zdeněk (referee) ; Rajmic, Pavel (advisor)
This masters theses deals with standard detection methods of speech/pause - voice activity detectors are based on the principles of short-time energy, real spectrum, short-time intensity and on a combinations of these three detectors. In the next parts, there are mentioned other voice activity detectors based on hidden Markovov‘s models and a detector described in the ITU-T G.729 standard. All the detectors, mentioned above, were implemented in research environment MATLAB. Further there was created an user interface for testing functions of the implemented detectors. Finally, there was done an evaluation by ROC characteristics according to the results of the testing.
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