Speech intelligibility improvement for hearing impaired with hearing instruments and fm systems

Speech, as an electrical signal, presents its most complicated form. Phonemes cover wide frequency range. Most types of hearing losses are characterized with higher level of hearing loss toward the higher frequencies. As a result, high frequency piece of a phonem becomes inaudible, and hearing impaired persons have a feeling that they can hear but can not understand the speech. The primary goal of the hearing instruments is to give better speech intelligibility. Modern digital hearing instruments use many algorithms to improve speech intelligibility in a head to head communication, even in the most challenging hearing situations with the surrounding noise. However, if the speech is coming from bigger distance, it is necessary to improve the hearing solution with the FM technology. FM systems brings a major benefit in speech intelligibility in difficult hearing situations and are recommended for hearing impaired children during their education.