Binaural wearing helps to improve sound source localization and signal-to-noise ratio, and also helps to eliminate head shadow effect to avoid hearing deprivation. At the same time, wearing hearing aids in both ears can also play a role in loudness integration and noise suppression, improving sound quality and reducing reverberation To achieve a better listening effect, it also has a better masking effect on the ears of some tinnitus patients.
Cephalometric effect refers to the difference in sound intensity between the left ear and the right ear due to the difference in the position of the sound source.For example, if the sound comes from the left, the sound heard by the left ear will be louder than the sound heard by the right ear.It is caused by the barrier and attenuation of the head, which can cause 6~8dBHearing loss.If the hearing loss of the two ears of the hearing impaired patient is not similar, when the sound comes from the worse ear, the better hearing ear will be directed toward the sound source.
When sounds come from different directions, there will be slight differences in the length of time they reach the ears and the intensity of the sound. The brain can judge the sound source based on the length of time and the intensity of the volume.If you listen with one ear, it is difficult to ensure that the sound is passed through and the direction of the sound source is accurately found.
