No abstract

Causes of voice disorders may vary the same way as treatment techniques. Surgical intervention is the most used treatment method. As for not so serious cases, vocal exercises can be efficiently used instead. Still, there are only few methods to find right diagnosis or classify the scale of impact on patient's voice. Nowadays, it is possible to extract key features (fundamental frequency, sound pressure level and less common such as cepstral coefficients, zero crossing rate or spectral energy) from patient's speech using state-of-the-art voice processing methods. So, the software called Voice disorder diagnostician was designed. The tool that can store patient's data and immediately provide the results of analysis. Abstrakt Příčiny vzniku poruch hlasu mohou být různé stejně tak jako jejich léčba. Nejčastěji se poruchy hlasu léčí chirurgicky tj. operací nebo v méně závažnějších případech hlasovými cvičeními. Přesto však v současné době existuje jen velmi málo metod, které mohou spolehlivě určit diagnózu pacienta a míru poškození hlasu. S využitím aktuálních metod pro zpracování řeči je možné určit klíčové parametry jako je základní tón hlasu, hladina akustického tlaku, ale i méně běžné jako například kepstrální koeficienty, počet průchodů nulou, či spektrální energie. Pro tyto účely byla vytvořena aplikace s názvem Voice disorder diagnostician. Nástroj, který umožňuje ukládat data od pacientů a provádět jejich okamžitou analýzu.

Part 2: Biometrics and Pattern Recognition ApplicationsInternational audienceThe aim of our study is verification of programmed algorithms of phonetic analysis using concrete data, and reassurance that it works as also sought after. For our testing, the appropriate recordings of New Year’s Day speeches of Czech and Czechoslovak presidents are available. The very first available recording of presidential speech comes from 1935. All transcripts and recordings of the last 87 speeches are located on the web page www.rozhlas.cz. The primary goal of this paper is to analyze voice characteristics of the speaker (log energy, speech velocity and Zero crossing rate). Especially words “with greatest energy” will be found. There will be a list of words having the highest energy values. The most interesting results will be presented by graphical tools. Using a software, capable of text analysis, transcript characteristics such as most frequent words, length of words, total number of words and different words will be computed. The most frequent words will be presented. Political speeches often become the subject of various analyses. Our calculation allows a new perspective on speeches. It is interesting to compare the most frequent semantic words and words with the greatest energy. The results can be historically important. It allows an extraction of new information from available data and scientifically different approach

The paper presents new possibilities in the ways of analyzing voice of patients suffering from voice disorders. Specialized software has been developed for this purpose. Application called Voice disorder diagnostician allows creating own patient database, storing patient's data, capturing voice of patients for further analysis and displaying results of feature extraction algorithm. Common diagnostic methods and procedures takes into count only limited number of parameters. The main idea is to combine medical experience and audio processing techniques in order to achieve desired results.

Paper deals with an analytic solution of Model Predictive Controller in simple symbolic form. Process is approximated with a first order dynamical model. Special choice of prediction and control horizons is considered, so the symbolic solution is still applicable, and the controller has interesting "predictive" feature in case of known future set-point course. Such a controller can be used in simple devices like PLCs or microcontrollers without need of matrix operations. Its advantage is that the controller reacts to the process model parameters and penalty parameter change so the control can be very fast and efficient even in adaptive manner.