Profile: All Japan Hearing Aid Association is a researcher of hearing aid dispensers. We receive public help for the purchase of hearing aids. Hearing aids are available for children, the elders & people affected in the workplace by their hearing loss. Hearing aid technology is constantly evolving & is becoming advanced. Modern hearing aids are small high-tech computers, constantly refined & developed to provide better reproduction of natural human hearing. There are many types and degrees of hearing loss. Hearing aids can be programmed to automatically respond to minute changes in sounds. The two types of technologies used in the hearing aids are digital & analog hearing aids. Modern hearing aids use digital technology. They transform the sound, convert it into bits, & manipulate before amplifying the signal. Hearing aids can provide a hearing impaired person with improved perception of speech and a more pleasant sound picture. The types of hearing aids can be divided into four categories such as completely-in-the-canal, in-the-canal, in-the-ear, behind-the-ear.