Investigated the ability of three- and four-year-old children to perform tasks which require matching sets of sounds to numerically equivalent visual displays. Findings indicated that three-year-olds performed at the level of chance on the auditory-visual matching task, but four-year-olds performed significantly above chance. (MOK)

Part 1 of this paper recommends procedures and standards for the acoustic analysis of voice in individuals with dysarthria. In Part 2, acoustic data are reviewed for dysarthria associated with Parkinson disease (PD), cerebellar disease, amytrophic lateral sclerosis, traumatic brain injury, unilateral hemispheric stroke, and essential tremor.…

Because community libraries are becoming centers of suburban and "exurban" activity, quiet study rooms are being constructed for customers intent on concentrated study. Discusses functional (size, location, furniture) and physical (acoustic, heating, ventilation, air conditioning, lighting, electronic support) considerations of quiet…

Fourteen children (ages 4-6) with specific language impairment produced sentences containing reduced or unreduced disyllabic proper names. Acoustic analyses revealed a significantly longer duration for verb-onset to name-onset of sentences containing the reduced name, indicating that although segmental material is omitted, an acoustic trace…

Introduced is an analysis of a waveform into its Fourier components. Topics included are simplified analysis of a square waveform, a triangular waveform, half-wave rectified alternating current (AC), and impulses. Provides the mathematical expression and simplified analysis diagram of each waveform. (YP)

Reviews studies in which perceptual cue trading data have been compared with computational models and examines the perception of contrast between the voiceless fricative "s" and the voiceless affricate "ts." Nine subjects listened to a total of 6 tokens each of 193 stimuli and labeled each stimulus as containing either of the…

Describes a method of measuring the speed of sound that can be done in front of a class on a lab table in 15 minutes, be understood by junior high school students, and be engaging and instructive for students at high school and college levels as well. Provides schematic for sound trigger. (MVL)

Discusses the use of 40 kHz ultrasonic transducers to study wave phenomena. Determines that the resulting wavelength of 9 mm allows acoustic experiments to be performed on a tabletop. Includes transducer characteristics and activities on speed of sound, reflection, double- and single-slit diffraction, standing waves, acoustical zone plate, and…

Discusses the notion of a musician's workstation and a curriculum for teaching musicians about the use of computers in music. Explains that the curriculum includes elements of physics and psychoacoustics, recording arts and sciences, the philosophy of technology and the musical arts, analog and digital electronic music, ergonomics, and computer…

Eight preschool children who underwent tracheotomy during the prelingual period were compared to matched controls on a variety of speech measures. Children with tracheotomies showed reduced acoustic vowel space, suggesting they were limited in their ability to produce extreme vocal tract configurations for vowels postdecannulation. Oral motor…

This study examined the abilities of 18 adults with familial dyslexia to use steady state, dynamic, and temporal cues in synthetic speech continua. Although subjects were able to label and discriminate the continua, they did not necessarily use acoustic cues in the same manner as did normal readers, and their overall performance was less accurate.…

Measures of both temporal and spectral parameters were computed to determine the extent of perseveratory coarticulation in the vowel-consonant syllables produced by 7- and 10-year-old children (n=9). Profoundly hearing-impaired speakers exhibited measurable but smaller effects of perseveratory coarticulation relative to the normally hearing…

Describes an experiment used to demonstrate basic physics concepts regarding acoustic waves used by oceanographers to obtain seabed profiles. (ZWH)

Presents hands-on science activities that help students learn the concepts of hearing and sound while allowing students to practice science process skills. Students investigate the use of alternative phonograph speakers and needles and apply the knowledge learned to the construction of one-string banjos. (MDH)

Discusses the history of Rudolph Koenig's contribution to the development of acoustical apparatus. Contributions include the clock fork to determine absolute acoustic frequencies, a forerunner of the oscilloscope called the manometric flame, and an acoustic interference apparatus used in the Fourier synthesis of musical sounds. (MDH)