SciELO - Scientific Electronic Library Online

vol.31 issue2Perception of association between normal development and environmental stimulation by mothers of children in the first three years of lifeTraining and knowledge of professionals of the health family team on reporting mistreatment of children and adolescents author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Revista Paulista de Pediatria

Print version ISSN 0103-0582


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.

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.

        · abstract in Portuguese | Spanish     · text in English | Portuguese     · English ( pdf ) | Portuguese ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License