Discussion of the parameters governing noise control and room acoustics are followed by a demonstration on how to achieve a good acoustical environment. Topics emphasized include--(1) design and control objectives, (2) noise sources and propagation, (3) reverberation parameters, (4) noise control factors and parameters, and (5) sound systems. Also…

A set of guidelines has been developed for the implementation of the audio mode in computer assisted instruction (CAI). The manual contains a collection of conventions and techniques synthesized from recent publications in areas pertinent to multi-media audiovisual presentation. These areas include audio message placement, positioning, frequency,…

There are several major areas with audio needs to be served: music, basic languages, literature, and general reference. These needs are most appropriately filled by the library, which is the best location for both audio production and services. (Author/MBR)

Due to technical improvements, Super 8 equipment with sound capacity is now able to produce good quality instructional films. (STS)

A two-microphone adaptive digital noise cancellation technique improved word-recognition ability for 20 normal and 12 hearing-impaired adults by reducing multitalker speech babble and speech spectrum noise 18-22 dB. Word recognition improvements averaged 37-50 percent for normal and 27-40 percent for hearing-impaired subjects. Improvement was best…

Looks at proposed standard for CD-I (compact disc-interactive) and its implications for product and market development, CD-ROM, and optical publishing. Possible roles of OS-9 (Microware's operating system), Polaroid's Colorcatcher, and products shown at the Microsoft CD-ROM conference in the development of the CD-I market are discussed. (Author)

The auditory output of the "Sonicguide" (Ultrasonic Spectacles) must be delivered to the ear of the blind person via a coupling tube. (Author/DB)

The random-access record listening system installed at the Radford College Library has provided a much needed and highly advanced type of service to the faculty and students. (Author)

Problems encountered in setting-up a cassette center at the Valhalla, Junior-Senior High School are discussed and a bibliography of available cassettes is included. (95 references) (NH)

Described and discussed is a teaching aid for use in small group communication which enalbes the instructor to provide a student with immediate feedback without interrupting the discussion in progress. (LS)