Classroom acoustics: enhancing the listening environment through the use of amplification systems

This paper discusses the variables affecting classroom acoustics and a case study examination of some local classrooms. Classrooms were measured against proposed American National Standards Institute (ANSI) standards and treatment options for improving acoustics are suggested.

Difference limens for first formant frequencies of synthesized vowels in hearing-impaired listeners

This paper studies auditory-vowel perception abilities of the hearing impaired. The study investigated the relationship among the difference limen for first formant frequencies of synthesized vowels in severe and profoundly hearing-impaired listeners, degree of hearing low, and general auditory speech perception.

A manual of FM systems for mainstream teachers

This paper presents a manual of frequency modulated (FM) sound systems designed for use by mainstream teachers who have hearing impaired students in their classrooms.