What is localization?

One of the earliest and easiest auditory skills to observe in your baby is localization, the ability to pinpoint the source of a sound. Because we hear through two ears (binaurally), we can localize sounds with extreme accuracy. In general, newborns will move or widen their eyes whenthey hear a loud sound. This is known as the startle reflex andmany loud sounds should induce this reflex.

Observing your child’s localization ability

When your infant gets to about five or six months, you can better observe a true localization response by making soft sounds behind or to the side of your infant while he or she is looking straight ahead (be sure you are out of view when making the sounds). A soft rattle shake or a whisper should prompt your baby to turn his or her head toward the sound.

While we expect infants to startle when presented with very loud sounds, it is most important to see how well your baby responds to soft sounds (such as the speech sound “s").

During the first year, your baby will refine listening skills and should alert to and look for the sources of common sounds around the home, such as a ringing doorbell or telephone, slamming door, children playing, a musical toy and speech.

Acknowledgements

Phonak acknowledges the permission and assistance of the following organizations for their expertise in this portion of our website: