Acoustical assistance for blind and visually impaired persons has become in recent years an impor... more Acoustical assistance for blind and visually impaired persons has become in recent years an important topic of practical significance in Poland. Helping visually handicapped persons in using acoustic signals and vibrations in independent and safe navigation in urban environment is a part of counteracting social exclusion of them. Three issues are described in the paper: (1) a process of preparing a unique method for teaching and training of orientation and mobility based on environmental sounds, (2) a concept of a non-acoustic system for marking and identification of dangers spots in a city using wave vibrating markers, and (3) a concept of auditory training aimed to sensibilize blind children and teenagers to differences in sounds and taught them to concentrate auditory attention on small differences in parameters on an acoustic wave, essential for independent and correct interpretation of environment by hearing and listening.
Higher education in Poland is either state owned or private. The total number of students in the ... more Higher education in Poland is either state owned or private. The total number of students in the institutions of higher education at the university level amounts to 630 000, which makes 15 students per 1000 citizens. As a rule, the education provided by state‐owned schools is free. Among the state‐owned educational institutions, presently in Poland, there are 13 universities, 18 technical universities, 8 musical academies, and 12 medical academies in which acoustics (or only psychoacoustics) is learned at selected branches of the studies The subject of acoustics is not provided in private schools. In this survey a directory of schools will be given with the details of studies where acoustics is available, including the numbers of students, hours, and the topics taught in the lectures and tutorials.
Ü b e r s i c h t : Allgemeine Grundsätze zur quantitativen Interpretation der Vibrationsverteilu... more Ü b e r s i c h t : Allgemeine Grundsätze zur quantitativen Interpretation der Vibrationsverteilung sowie Bedingungen zur genauen Bestimmung der mittels holographischer Interferometne registrierten Schwingungsamphtuden werden dargelegt. Zwei Umwandlungsmethoden des holographischen Bildes eines schwingenden Objektes in ein Vibrationsamplitudennetz werden beschrieben: eine Methode, die die Leitung der Industrie-TV ausnutzt, sowie eine, die auf klassischer Photometne basiert.
The transient characteristic is one of the most important objective parameters which correlates t... more The transient characteristic is one of the most important objective parameters which correlates to the subjective judgements of the sound of loudspeakers. The new electronic system for determining the transient characteristics of loudspeakers is described. Examples of transient characteristics of loudspeakers are presented. Für die Dokumentat ion: Dynamisches Verhalten / elektroakustischer Wandler
Journal of the Audio Engineering Society, Nov 1, 1990
The authors attempted to find significant causes that contribute to differences in the subjective... more The authors attempted to find significant causes that contribute to differences in the subjective evaluation of a sound emitted by several loudspeakers of a particular kind. The outputs of six dynamic woofers were investigated. Analysis of the results of the objective evaluation of the loudspeakers indicated that the subjective evaluation of sounds is influenced by the duration of the final transients and the value of the coefficient D
The elaborated contactless measuring method of the diaphragm vibrations of electroacoustic transd... more The elaborated contactless measuring method of the diaphragm vibrations of electroacoustic transducers applying an optical "transmission" permits the recording of vibrations of diaphragms in the whole range of acoustic frequencies. This method may be also utilized for investigated diaphragms made of semi-transparent materials. Für die Dokumenta t ion: Optische Meßtechnik / Dynamisches Verhalten / Vibrationsverteilung / elektroakustischer Wandler
Acoustical assistance for blind and visually impaired persons has become in recent years an impor... more Acoustical assistance for blind and visually impaired persons has become in recent years an important topic of practical significance in Poland. Helping visually handicapped persons in using acoustic signals and vibrations in independent and safe navigation in urban environment is a part of counteracting social exclusion of them. Three issues are described in the paper: (1) a process of preparing a unique method for teaching and training of orientation and mobility based on environmental sounds, (2) a concept of a non-acoustic system for marking and identification of dangers spots in a city using wave vibrating markers, and (3) a concept of auditory training aimed to sensibilize blind children and teenagers to differences in sounds and taught them to concentrate auditory attention on small differences in parameters on an acoustic wave, essential for independent and correct interpretation of environment by hearing and listening.
Higher education in Poland is either state owned or private. The total number of students in the ... more Higher education in Poland is either state owned or private. The total number of students in the institutions of higher education at the university level amounts to 630 000, which makes 15 students per 1000 citizens. As a rule, the education provided by state‐owned schools is free. Among the state‐owned educational institutions, presently in Poland, there are 13 universities, 18 technical universities, 8 musical academies, and 12 medical academies in which acoustics (or only psychoacoustics) is learned at selected branches of the studies The subject of acoustics is not provided in private schools. In this survey a directory of schools will be given with the details of studies where acoustics is available, including the numbers of students, hours, and the topics taught in the lectures and tutorials.
Ü b e r s i c h t : Allgemeine Grundsätze zur quantitativen Interpretation der Vibrationsverteilu... more Ü b e r s i c h t : Allgemeine Grundsätze zur quantitativen Interpretation der Vibrationsverteilung sowie Bedingungen zur genauen Bestimmung der mittels holographischer Interferometne registrierten Schwingungsamphtuden werden dargelegt. Zwei Umwandlungsmethoden des holographischen Bildes eines schwingenden Objektes in ein Vibrationsamplitudennetz werden beschrieben: eine Methode, die die Leitung der Industrie-TV ausnutzt, sowie eine, die auf klassischer Photometne basiert.
The transient characteristic is one of the most important objective parameters which correlates t... more The transient characteristic is one of the most important objective parameters which correlates to the subjective judgements of the sound of loudspeakers. The new electronic system for determining the transient characteristics of loudspeakers is described. Examples of transient characteristics of loudspeakers are presented. Für die Dokumentat ion: Dynamisches Verhalten / elektroakustischer Wandler
Journal of the Audio Engineering Society, Nov 1, 1990
The authors attempted to find significant causes that contribute to differences in the subjective... more The authors attempted to find significant causes that contribute to differences in the subjective evaluation of a sound emitted by several loudspeakers of a particular kind. The outputs of six dynamic woofers were investigated. Analysis of the results of the objective evaluation of the loudspeakers indicated that the subjective evaluation of sounds is influenced by the duration of the final transients and the value of the coefficient D
The elaborated contactless measuring method of the diaphragm vibrations of electroacoustic transd... more The elaborated contactless measuring method of the diaphragm vibrations of electroacoustic transducers applying an optical "transmission" permits the recording of vibrations of diaphragms in the whole range of acoustic frequencies. This method may be also utilized for investigated diaphragms made of semi-transparent materials. Für die Dokumenta t ion: Optische Meßtechnik / Dynamisches Verhalten / Vibrationsverteilung / elektroakustischer Wandler
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