|
|
Estimation and analysis of speech signal periodicity
Malucha, Jan ; Poměnková, Jitka (referee) ; Sigmund, Milan (advisor)
Theoretical part starts with a short introduction to speech signals and short time analysis method. Concept of periodicity is clarified. This is followed by analysis of the speech signal parameters - voiced/unvoiced classification, intonation and short time period similarity. Next the overview of methods used to analyze the mentioned parameters together with concepts of their algorithms is provided. These methods include ZCR, STE, HNR, ACF, NCC, AMDF and DTW. Algorithms using the methods with supporting preprocessing algorithms were programmed in MATLAB for practical part. All were tested on real speech signals and the results are discussed at the end of the thesis.
|
|
|
Program to support correct pronunciation of foreign languages
Malucha, Jan ; Kohl,, Ing, Zdeněk (referee) ; Sigmund, Milan (advisor)
The aim of the diploma thesis is the development of an autonomous program for checking and evaluating the pronunciation of a foreign language. Theoretical part includes a treatise on the history and importance of computer-assisted language teaching; it also contains a brief introduction to phonetics, phonology and pronunciation issues, as well as an introduction to speech signal processing with a focus on computational methods for pronunciation analysis. In the practical part, a search of currently widespread and available tools for pronunciation control was processed and a number of algorithms usable for its analysis were programmed. Some of the algorithms have been enclosed in a graphical user interface as a basic prototype of a functional program to support pronunciation. The achieved results and the direction of further development are discussed in the conclusion.
|
|
|
Detection of gunshots from small arms
Nesvadba, Ondřej ; Malucha, Jan (referee) ; Sigmund, Milan (advisor)
This thesis deals with acoustical gunshot detection from small arms, typically of the calibre up to 10 mm, primarily in urban areas. Thesis includes initial research of methods, which are usually used for gunshot detection. The key part of this work is examination of typical values of gunshot signal. Based on the values obtained, decisive parameters in time and frequency domains are determined and detection algorithms are proposed. Function of these algorithms is tested and evaluated. The possible influence of various features of recordings on detection success rate was discussed.
|
|
|
Matlab Tool for Assistance in Learning English Words Pronunciation
Malucha, Jan
This paper presents a MATLAB module to assist students in learning the correct pronunciation of individual English words. The measurement of pronunciation correctness is based on evaluation of prosodic speech parameters using three methods. A brief introduction to these prosodic parameters is given, along with a description of the developed tool. Program testing was performed with a native and non-native speaker.
|
|
|
Program to support correct pronunciation of foreign languages
Malucha, Jan ; Kohl,, Ing, Zdeněk (referee) ; Sigmund, Milan (advisor)
The aim of the diploma thesis is the development of an autonomous program for checking and evaluating the pronunciation of a foreign language. Theoretical part includes a treatise on the history and importance of computer-assisted language teaching; it also contains a brief introduction to phonetics, phonology and pronunciation issues, as well as an introduction to speech signal processing with a focus on computational methods for pronunciation analysis. In the practical part, a search of currently widespread and available tools for pronunciation control was processed and a number of algorithms usable for its analysis were programmed. Some of the algorithms have been enclosed in a graphical user interface as a basic prototype of a functional program to support pronunciation. The achieved results and the direction of further development are discussed in the conclusion.
|
|
|
Program For Assistance In Learning English Pronunciation
Malucha, Jan
This study presents a compact MATLAB tool to assist students in learning the correctpronunciation of English language, with use of three known methods for estimation of speech signalvoicing. A short introduction into speech voicing analysis is given and the developed programis briefly described. The practical use of the program was verified by test with non-native speaker.
|
|
|
Advanced Estimation Of Speech Signal Periodicity
Malucha, Jan
This study examined the use of methods for advanced estimation of speech signal periodicity. The speech parameters of jitter, schimmer and short time period similarity were briefly explained as well as their estimation with appropriate methods, all of them integrated into a compact MATLAB program. The practical use of the program was demonstrated on the analysis of a stressed and neutral speech signal and achieved results were presented at the end of the study.
|
|
|
Estimation and analysis of speech signal periodicity
Malucha, Jan ; Poměnková, Jitka (referee) ; Sigmund, Milan (advisor)
Theoretical part starts with a short introduction to speech signals and short time analysis method. Concept of periodicity is clarified. This is followed by analysis of the speech signal parameters - voiced/unvoiced classification, intonation and short time period similarity. Next the overview of methods used to analyze the mentioned parameters together with concepts of their algorithms is provided. These methods include ZCR, STE, HNR, ACF, NCC, AMDF and DTW. Algorithms using the methods with supporting preprocessing algorithms were programmed in MATLAB for practical part. All were tested on real speech signals and the results are discussed at the end of the thesis.
|
guest ::
