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Revista Paulista de Pediatria

Print version ISSN 0103-0582

Abstract

SLEIFER, Pricila; GONCALVES, Maiara Santos; TOMASI, Marinês  and  GOMES, Erissandra. Analysis of sound pressure levels emitted by children's toys. Rev. paul. pediatr. [online]. 2013, vol.31, n.2, pp.218-222. ISSN 0103-0582.  http://dx.doi.org/10.1590/S0103-05822013000200013.

OBJECTIVE:To verify the levels of sound pressure emitted by non-certified children's toys. METHODS: Cross-sectional study of sound toys available at popular retail stores of the so-called informal sector. Electronic, mechanical, and musical toys were analyzed. The measurement of each product was carried out by an acoustic engineer in an acoustically isolated booth, by a decibel meter. To obtain the sound parameters of intensity and frequency, the toys were set to produce sounds at a distance of 10 and 50cm from the researcher's ear. The intensity of sound pressure [dB(A)] and the frequency in hertz (Hz) were measured. RESULTS:48 toys were evaluated. The mean sound pressure 10cm from the ear was 102±10 dB(A), and at 50cm, 94±8 dB(A), with p<0.05. The level of sound pressure emitted by the majority of toys was above 85dB(A). The frequency ranged from 413 to 6,635Hz, with 56.3% of toys emitting frequency higher than 2,000Hz. CONCLUSIONS: The majority of toys assessed in this research emitted a high level of sound pressure.

Keywords : play and playthings; noise measurement; child.

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