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Objective methods for evaluation of the audio signal quality
Granát, Michal ; Rajmic, Pavel (referee) ; Rášo, Ondřej (advisor)
This diploma thesis deals with the objective methods of audio-signal qualification. In detail have been described algorithms to the reader which are used in individual methods. Individual methods are analyzed from computational intensity, ability to predict precisely subjective quality of audio-signals, point of view. There have been described basic variables by which audio-signals are described in further parts of this thesis. Second part has been dedicated to theoretical description of individual methods – their advantages and disadvantages and practical forms of usage. Third part has been dedicated to implementation of two chosen methods in graphical interface of MATLAB program. All the functions are described in detail which these applications offer. In the last part of the thesis there are in detail described results obtained by practical testing of audio-signals with different character in created applications and evaluated quality of reached results as an outcome.
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Speech intelligibility index
Kostelník, Pavel ; Šebesta, Vladimír (referee) ; Sigmund, Milan (advisor)
This bachelor’s thesis presents evaluating of speech intelligibility in environment with noise. There are described two methods to reach this purpose – articulation index and speech intelligibility index, according to relevant standards. Part of this thesis deals with measurement of sound pressure to calculation sound pressure spectrum level. The last part of this work includes voice recordings of eight people and noise recordings of moving car in interior for different situations and their processing and evaluation.
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Speech intelligibility index
Kostelník, Pavel ; Šebesta, Vladimír (referee) ; Sigmund, Milan (advisor)
This bachelor’s thesis presents evaluating of speech intelligibility in environment with noise. There are described two methods to reach this purpose – articulation index and speech intelligibility index, according to relevant standards. Part of this thesis deals with measurement of sound pressure to calculation sound pressure spectrum level. The last part of this work includes voice recordings of eight people and noise recordings of moving car in interior for different situations and their processing and evaluation.
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Objective methods for evaluation of the audio signal quality
Granát, Michal ; Rajmic, Pavel (referee) ; Rášo, Ondřej (advisor)
This diploma thesis deals with the objective methods of audio-signal qualification. In detail have been described algorithms to the reader which are used in individual methods. Individual methods are analyzed from computational intensity, ability to predict precisely subjective quality of audio-signals, point of view. There have been described basic variables by which audio-signals are described in further parts of this thesis. Second part has been dedicated to theoretical description of individual methods – their advantages and disadvantages and practical forms of usage. Third part has been dedicated to implementation of two chosen methods in graphical interface of MATLAB program. All the functions are described in detail which these applications offer. In the last part of the thesis there are in detail described results obtained by practical testing of audio-signals with different character in created applications and evaluated quality of reached results as an outcome.
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