Jan Felcyn | Adam Mickiewicz University in Poznań (original) (raw)
Papers by Jan Felcyn
Archives of Acoustics, 2022
Noise mapping is based on long-term noise indicators, such as L N or L DEN. On the other hand, tr... more Noise mapping is based on long-term noise indicators, such as L N or L DEN. On the other hand, transportation intensity changes during a day (road traffic peak hours) or a year (more flights during holidays) and this variability is not reflected in single sound level values. We wanted to find out whether not only sound level but also the number of noise events is the factor influencing noise annoyance assessment. Ambisonic recordings of real traffic in a city were used. Road, tramway, and aircraft traffic were investigated and two factors were manipulated: the equivalent sound level value and the number of noise events. All stimuli were presented in an anechoic chamber. The results showed that sound level is always a statistically significant parameter while the number of events has an impact only for tramways and airplanes. Moreover, the difference is observed only between one or more subgroups, no matter what the sound level value was. For road traffic this relation was not found to be statistically significant. It was also shown that the existence of tramway bonus or airplane malus is linked with the number of noise events.
Journal of Environmental Health Science and Engineering, 2021
Purpose Road traffic noise is the most common source of noise in modern cities. The noise indicat... more Purpose Road traffic noise is the most common source of noise in modern cities. The noise indicators used to manage noise do not take into account its temporal structure. However, in cities the traffic flow varies during the day, peaking due to congestion and more fluent periods. In this research we sought to analyze how people (giving answers on a numerical ICBEN scale) perceive noise stimuli with the same L AeqT values but different time structures (more/less noise events, different amplitude envelopes). Methods 31 people with normal hearing took part in an experiment conducted in an anechoic chamber. Participants listened to 18 different noise recordings and rated each of them using the numerical ICBEN scale regarding noise annoyance. Results The results showed that only sound level was a statistically significant factor. However, based on people's remarks about noise, we can also say that the more intermittent the noise is, the more negative feelings it evokes in people. Conclusions Time structure does not have a significant influence on people's judgments about noise annoyance. However, people tend to have a preference for a steady noise rather than an intermittent one.
Transportation Research Part D: Transport and Environment, 2018
In this paper the results of noise maps counted for cars and trams, in 10 areas in the city of Po... more In this paper the results of noise maps counted for cars and trams, in 10 areas in the city of Poznań, are analyzed in the context of possible action plans. These results are compared with the information from surveys, involving 794 participants, performed at the same 10 areas. The general results showed that basing solely on the values of noise indicators, i.e. information from the noise maps, is not sufficient for reliable planning of noise action plans, particularly those created in response to multiple noise sources. The exceedance of a noise limit for a given sound source does not necessarily mean that this source is the most annoying for inhabitants.
To find a solution to this problem, we propose conducting dedicated noise surveys in the specific areas in each city (in which the noise maps are calculated) where we know a priori that more than one noise source will occur at the same time and could be potentially annoying. In the proposed survey we suggest using two specified questions: whether a given sound source is annoying or not, and which sound source should be the first one to be eliminated, if this is possible.
This new survey proposal is the result of an analysis of the survey performed within this study. Some methodological changes are proposed with regard to the survey that was actually used. This new approach could improve decisions about action plans and provide more complex information about peoples’ assessment of noise annoyance evoked by different sound sources.
Currently research into the psychological evaluation of noise in daily life is carried out withou... more Currently research into the psychological evaluation of noise in daily life is carried out without taking into account the sense of sight. The human senses interact with each other; thus some information coming from one sense can be skipped or ignored in favor of information coming from another sense, leading to completely different reactions or behavior. The aim of this paper is to verify, on the basis of psychophysical experiments, how a human being processes audiovisual information coming from the different environmental noises which can be encountered in daily life. The experiment was divided into three parts: auditory, visual, and audiovisual. In each part of the experiment, the ICBEN scale (0–10) was used to rate the presented stimuli. In the first part only audio stimuli were presented , and subjects were asked to rate their annoyance with the sound. In the second part of the experiment, the participants were asked to rate how pleasant the presented video clips were. Finally, in the last part of the experiment, participants were presented with a compatible and incompatible mix of audio and visual stimuli and asked to rate their annoyance. We found that several audio stimuli were assessed differently, to a significant extent, by listeners after video clips were added to them.
One of the most important elements of everyday life is communication. The most natural way of it ... more One of the most important elements of everyday life is communication. The most natural way of it is speech. Unfortunately, there are many diseases which disturb fluency and intelligibility of speech. Such disorders often lead to emotional and psychological problems related to social interactions. Early diagnosis is crucial to detect and minimalize results of such disorders. To make this process easier, several automatic algorithms have been proposed by scientists. In this paper, we investigated two methods: Envelope Modulation Spectra (EMS) and Multidirectional Regression (MDR). We applied both techniques to Polish language and evaluated their performance on distinguishing Polish speakers with and without speech disorders. Our experiments showed that each method is efficient in such a discrimination task. Among all 48 EMS characteristics 45 differed significantly both groups of speakers. MDR recognized disordered speech with almost 99% accuracy for several words.
Celem niniejszej pracy było zbadanie spostrzegania emocji przez słuchaczy w nagraniach śpiewu sol... more Celem niniejszej pracy było zbadanie spostrzegania emocji przez słuchaczy w nagraniach śpiewu solowego a cappella i skorelowanie ich z charakterystykami dźwiękowymi (zwłaszcza psychoakustycznymi) poszczególnych nagrań. Dyplomowany kompozytor napisał utwór, który został następnie wykonany w siedmiu różnych emocjach przez barytona (gniew, czułość, radość, strach, patos, smutek, neutralność) i nagrany. Dla każdego nagrania obliczono charakterystyki dźwiękowe, część z nich była tożsama z charakterystykami pojawiającymi się we wcześniejszych badaniach. Zmierzono również parametry psychoakustyczne: ostrość, chropowatość, siłę fluktuacji i tonalność. Dwudziestu trzech słuchaczy wzięło udział w eksperymencie, w którym oceniało siedem nagrań, każde z nich na siedmiu skalach emocji (tożsamych z emocjami, które starał się przekazać baryton). Wyniki grupowe pokazały, że każde z nagrań było ocenianie więcej niż z jedną (zamierzoną przez wykonawcę) emocją a analiza statystyczna ujawniła, że emocje te nie były oceniane przypadkowo. Na podstawie analizy korelacji wykazano, że charakterystyki psychoakustyczne mogą służyć do opisu nagrania gniewnego, smutnego i czułego. Przeprowadzono także analizę użyteczności poszczególnych charakterystyk przy opisie emocji.
Archives of Acoustics, 2022
Noise mapping is based on long-term noise indicators, such as L N or L DEN. On the other hand, tr... more Noise mapping is based on long-term noise indicators, such as L N or L DEN. On the other hand, transportation intensity changes during a day (road traffic peak hours) or a year (more flights during holidays) and this variability is not reflected in single sound level values. We wanted to find out whether not only sound level but also the number of noise events is the factor influencing noise annoyance assessment. Ambisonic recordings of real traffic in a city were used. Road, tramway, and aircraft traffic were investigated and two factors were manipulated: the equivalent sound level value and the number of noise events. All stimuli were presented in an anechoic chamber. The results showed that sound level is always a statistically significant parameter while the number of events has an impact only for tramways and airplanes. Moreover, the difference is observed only between one or more subgroups, no matter what the sound level value was. For road traffic this relation was not found to be statistically significant. It was also shown that the existence of tramway bonus or airplane malus is linked with the number of noise events.
Journal of Environmental Health Science and Engineering, 2021
Purpose Road traffic noise is the most common source of noise in modern cities. The noise indicat... more Purpose Road traffic noise is the most common source of noise in modern cities. The noise indicators used to manage noise do not take into account its temporal structure. However, in cities the traffic flow varies during the day, peaking due to congestion and more fluent periods. In this research we sought to analyze how people (giving answers on a numerical ICBEN scale) perceive noise stimuli with the same L AeqT values but different time structures (more/less noise events, different amplitude envelopes). Methods 31 people with normal hearing took part in an experiment conducted in an anechoic chamber. Participants listened to 18 different noise recordings and rated each of them using the numerical ICBEN scale regarding noise annoyance. Results The results showed that only sound level was a statistically significant factor. However, based on people's remarks about noise, we can also say that the more intermittent the noise is, the more negative feelings it evokes in people. Conclusions Time structure does not have a significant influence on people's judgments about noise annoyance. However, people tend to have a preference for a steady noise rather than an intermittent one.
Transportation Research Part D: Transport and Environment, 2018
In this paper the results of noise maps counted for cars and trams, in 10 areas in the city of Po... more In this paper the results of noise maps counted for cars and trams, in 10 areas in the city of Poznań, are analyzed in the context of possible action plans. These results are compared with the information from surveys, involving 794 participants, performed at the same 10 areas. The general results showed that basing solely on the values of noise indicators, i.e. information from the noise maps, is not sufficient for reliable planning of noise action plans, particularly those created in response to multiple noise sources. The exceedance of a noise limit for a given sound source does not necessarily mean that this source is the most annoying for inhabitants.
To find a solution to this problem, we propose conducting dedicated noise surveys in the specific areas in each city (in which the noise maps are calculated) where we know a priori that more than one noise source will occur at the same time and could be potentially annoying. In the proposed survey we suggest using two specified questions: whether a given sound source is annoying or not, and which sound source should be the first one to be eliminated, if this is possible.
This new survey proposal is the result of an analysis of the survey performed within this study. Some methodological changes are proposed with regard to the survey that was actually used. This new approach could improve decisions about action plans and provide more complex information about peoples’ assessment of noise annoyance evoked by different sound sources.
Currently research into the psychological evaluation of noise in daily life is carried out withou... more Currently research into the psychological evaluation of noise in daily life is carried out without taking into account the sense of sight. The human senses interact with each other; thus some information coming from one sense can be skipped or ignored in favor of information coming from another sense, leading to completely different reactions or behavior. The aim of this paper is to verify, on the basis of psychophysical experiments, how a human being processes audiovisual information coming from the different environmental noises which can be encountered in daily life. The experiment was divided into three parts: auditory, visual, and audiovisual. In each part of the experiment, the ICBEN scale (0–10) was used to rate the presented stimuli. In the first part only audio stimuli were presented , and subjects were asked to rate their annoyance with the sound. In the second part of the experiment, the participants were asked to rate how pleasant the presented video clips were. Finally, in the last part of the experiment, participants were presented with a compatible and incompatible mix of audio and visual stimuli and asked to rate their annoyance. We found that several audio stimuli were assessed differently, to a significant extent, by listeners after video clips were added to them.
One of the most important elements of everyday life is communication. The most natural way of it ... more One of the most important elements of everyday life is communication. The most natural way of it is speech. Unfortunately, there are many diseases which disturb fluency and intelligibility of speech. Such disorders often lead to emotional and psychological problems related to social interactions. Early diagnosis is crucial to detect and minimalize results of such disorders. To make this process easier, several automatic algorithms have been proposed by scientists. In this paper, we investigated two methods: Envelope Modulation Spectra (EMS) and Multidirectional Regression (MDR). We applied both techniques to Polish language and evaluated their performance on distinguishing Polish speakers with and without speech disorders. Our experiments showed that each method is efficient in such a discrimination task. Among all 48 EMS characteristics 45 differed significantly both groups of speakers. MDR recognized disordered speech with almost 99% accuracy for several words.
Celem niniejszej pracy było zbadanie spostrzegania emocji przez słuchaczy w nagraniach śpiewu sol... more Celem niniejszej pracy było zbadanie spostrzegania emocji przez słuchaczy w nagraniach śpiewu solowego a cappella i skorelowanie ich z charakterystykami dźwiękowymi (zwłaszcza psychoakustycznymi) poszczególnych nagrań. Dyplomowany kompozytor napisał utwór, który został następnie wykonany w siedmiu różnych emocjach przez barytona (gniew, czułość, radość, strach, patos, smutek, neutralność) i nagrany. Dla każdego nagrania obliczono charakterystyki dźwiękowe, część z nich była tożsama z charakterystykami pojawiającymi się we wcześniejszych badaniach. Zmierzono również parametry psychoakustyczne: ostrość, chropowatość, siłę fluktuacji i tonalność. Dwudziestu trzech słuchaczy wzięło udział w eksperymencie, w którym oceniało siedem nagrań, każde z nich na siedmiu skalach emocji (tożsamych z emocjami, które starał się przekazać baryton). Wyniki grupowe pokazały, że każde z nagrań było ocenianie więcej niż z jedną (zamierzoną przez wykonawcę) emocją a analiza statystyczna ujawniła, że emocje te nie były oceniane przypadkowo. Na podstawie analizy korelacji wykazano, że charakterystyki psychoakustyczne mogą służyć do opisu nagrania gniewnego, smutnego i czułego. Przeprowadzono także analizę użyteczności poszczególnych charakterystyk przy opisie emocji.