This paper discusses the problem of feedback in hearing aids and offers examples based on a computer simulation of hearing aid behavior. The available technology for dealing with feedback is reviewed, and the new digital signal-processing approaches which may finally solve the feedback problem are described. (Author/DB)

This article introduces the use of multilayered artificial neural networks in hearing aid noise recognition. It reviews basic principles of neural networks, and offers an example of an application in which a neural network is used to identify the presence or absence of noise in speech. The ability of neural networks to "learn" the…

Describes alternative approaches to hearing aid fitting with infants and young children in light of recent technological developments. Both audiometric-based and electroacoustic-based procedures are described. Discusses the relative strengths and limitations of each approach to hearing aid fitting in terms of their clinical application with…

The manual describes audiology services offered at the Model Secondary School for the Deaf (MSSD). Components are listed for diagnostic services, instructional services, program development, training, and publications. Testing and reporting procedures for MSSD students are outlined. Testing includes pure-tone air conduction testing, tympanometry,…

Describes a program that was implemented at the St. Francis de Sales School for the Deaf, a day school for deaf children, to overcome a six-year-old child's fear of the process of having earmolds made and of other associated activities of the schools' audiologists. (Author/CR)

Discussion of technological advances in amplification for children with hearing impairments focuses on the advantages and limitations of fitting children with devices that have features such as dynamic-range compression, multiband signal processing, multimemory capability, digital feedback reduction, and frequency transposition. (Author/DB)

Interviews with 37 individuals in Nicaragua were the basis of this review of the audiology field in that nation. The review covers the prevalence and etiology of hearing impairment, training for audiologists, government services for individuals with hearing impairment, private agencies concerned with hearing impairment, and fitting and use of…

Focuses upon the selection and fitting of hearing aids for young children in Japan. Explains fitting methods and their evaluation. Suggests that although most of the schools for the deaf are making serious efforts to establish binaural fitting and use of residual hearing, lack of professional training hinders those efforts. (AA)

Gives an overview of the present school system in Japan, focusing on early intervention for hearing impairments, auditory compensation devices, and instruction in auditory training. Suggests that recent developments in hearing aid technology have resulted in substantial improvements in the identification and rehabilitation of hearing-impaired…