The sound of square dance has an influence on children, especially on ears, so adults must pay attention to this problem. Children are more sensitive to sound perception than adults. Noise exceeding 70 decibels will damage children's hearing system. When the noise reaches 80 decibels, children will have various problems including hearing impairment.
Basic introduction
When choosing toys for children, we must pay attention to the physical and mental development and health of infants, and the sound emitted by toys should be controlled below 70 decibels. First, buy regular toys. For example, toys should pass safety and compliance monitoring. Toys found in the wholesale market are not safe, so don't consider them; Secondly, we should screen toys.
Before the child gets the toy, parents should put it about 30 cm away from the head and listen to its sound. If you are startled, then its volume must exceed the standard; When in use, control the volume of the toy. If it's too noisy, it's recommended to tape its speaker, reduce the volume, or simply take out the battery. Try to shorten the time children spend playing video games or listening to audio equipment.