Abstract
The aim of this study is to verify a noninvasive technique for assessing the characteristics of acoustic fields in the audible range arising in the uterus under the action of maternal voice, external sounds, and vibrations. This problem is very important in view of actively developed methods for delivery of external sounds to the uterus: music, maternal voice recordings, sounds from outside the mother’s body, etc., that supposedly support development of the fetus at the prenatal stage psychologically and cognitively. However, the parameters of acoustic signals have been neither measured nor normalized, which may be dangerous for the fetus and hinder actual assessment of their impact on fetal development. The authors show that at frequencies below 1 kHz, acoustic pressure in the uterus may be measured noninvasively using a hydrophone placed in a soft capsule filled with liquid. It was found that the acoustic field at frequencies up to 1 kHz arising in the uterus under the action of an external sound field has amplitude-frequency parameters close to those of the external field; i.e., the external field penetrates the uterus with hardly any difficulty.
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Original Russian Text © V.A. Antonets, V.V. Kazakov, 2014, published in Akusticheskii Zhurnal, 2014, Vol. 60, No. 3, pp. 320–326.
The article was translated by the authors.
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Antonets, V.A., Kazakov, V.V. On noninvasive assessment of acoustic fields acting on the fetus. Acoust. Phys. 60, 342–347 (2014). https://doi.org/10.1134/S1063771014030026
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DOI: https://doi.org/10.1134/S1063771014030026