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Sound reproduction levels in portable players used by pupils in Warsaw secondary schools

100%

Rogowski P. , Rościszewska T. , Jaroszewski A.

Archives of Acoustics

2001

tom Vol. 26, no. 1

3--10

Sound pressure levels in insert headphones used by young users of CC and CD players were measured in 421 cases. In 137 of these cases short selections of music were recorded and analysed. The results show SPLs in excess of what is considered as a safe sound pressure level.

Detection and Recognition of Environmental Sounds by Musicians and Non-Musicians

88%

Miśkiewicz A. , Rościszewska T. , Żera J. , Majer J. , Okoń-Makowska B.

Archives of Acoustics

2018

tom Vol. 43, No. 4

581--592

The article reports three experiments conducted to determine whether musicians possess better ability of recognising the sources of natural sounds than non-musicians. The study was inspired by reports which indicate that musical training develops not only musical hearing, but also enhances various non-musical auditory capabilities. Recognition and detection thresholds were measured for recordings of environment al sounds presented in quiet (Experiment 1) and in the background of a noise masker (Experiment 2). The listener’s ability of sound source recognition was inferred from the recognition-detection threshold gap (RDTG) defined as the difference in signal level between the thresholds of sound recognition and sound detection. Contrary to what was expected from reports of enhanced auditory abilities of musicians, the RDTGs were not smaller for musicians than for non-musicians. In Experiment 3, detection thresholds were measured with an adaptive procedure comprising three interleaved stimulus tracks with different sounds. It was found that the threshold elevation caused by stimulus interleaving was similar for musicians and non-musicians. The lack of superiority of musicians over non-musicians in the auditory tasks Explorer in this study is explained in terms of a listening strategy known as casual listening mode, which is a basis for auditory orientation in the environment.

Concert Hall Sound Clarity: A Comparison of Auditory Judgments and Objective Measures

88%

Miśkiewicz A. , Rogala T. , Rościszewska T. , Rudzki T. , Fidecki T.

Archives of Acoustics

2012

tom Vol. 37, No. 1

41-46

The purpose of the study was to compare auditory judgments of sound clarity of music examples recorded in a concert hall with predictions of clarity made from the impulse response signal recorded in the same hall. Auditory judgments were made with the use of two methods: by rating sound clarity on a numerical scale with two endpoints, and by absolute magnitude estimation. Results obtained by both methods were then compared against the values of clarity indices, C80 and C50, determined from the impulse response of the concert hall, measured in places in which the microphone was located during recording of music examples. Results show that auditory judgments of sound clarity and predictions made from the C80 index yield a similar rank order of data, but the relation between the C80 scale and perceived sound clarity is nonlinear. The data also show that the values of C80 and C50 indices are in very close agreement.