Variation of sound events that stand out in one's memory across the ages: Comparison between 2008 and 2016
Takeshi Akita, Lei Qu · The Journal of the Acoustical Society of America · 2019
To contribute to create good soundscape, sound events that stand out in one's memory are surveyed. In the present research, the data of written questionnaire that is carried out in the coursework of acoustics is analyzed. Especially, results of 2016 are compared with that of 2008. In the questionnaire, students are instructed to write down sound events that are easily recalled at the moment, after they remember the sound events that they heard in the period from the time of awakening to the coursework. Additionally, students evaluate each sound event whether they have good or bad impression. As the result, average of recalled sound events was 10.1 per person in 2016 while it was 8.2 in 2008. Sound events are classified into three large categories at each year, and the composition of the classification is the same between 2016 and 2008. They are labeled as "Sound produced by a person or people", "Artificially produced sound", and "Nature sound." In 2016 data, the number of artificially produced sound that has no good nor bad evaluation increases significantly in comparison to 2008. It is suggested that popularization of information technology and smartphone produces more electronic sound in the urban soundscape.