It is because hearing with two equally functioning ears has several advantages than with one ear. Hearing with two ears can help to find out where the sound is coming from. In addition, speech understanding can be enhanced in noisy background when hearing with two ears. Moreover, hearing with two ears can also increase the loudness level of the sound perceived.
It takes time for beginners to adapt with their new hearing aids, especially when they can hear the strange sounds and noise again. Therefore, beginners should start using hearing aids at home, from lower volume setting and shorter hours until they are finally adapted.
Selection of hearing aids depends on various factors. These factors include the degree and the type of hearing loss, cosmetic concern, the technology, the dexterity, lifestyle and eyesight. Audiological professionals can give advice to you for choosing the most appropriate hearing aid. (For details, please refer to Hearing Aid Prescription.)
Digital hearing aids can process advanced features, e.g. Dual Microphone technology (two directional microphones) which can enhance speech understanding in noisy environment. In addition, Noise Reduction feature can also provide better hearing comfort in noisy situation.
Yes, hearing aids can be used for telephone and mobile phone. For In-The-Ear (ITE) and Completely-In-The-Canal (CIC) hearing aids, you can use the telephone in an ordinary way; place the telephone handset close to the ear canal. For the Behind-The-Ear (BTE) hearing aid, place the telephone handset near the upper part of the pinna (where the microphone of the hearing aid is located).