Accession Number : ADA193421

Title :   Demodulation Processes in Auditory Perception.

Descriptive Note : Annual rept. 1 Dec 86-30 Nov 87,

Corporate Author : KANSAS UNIV LAWRENCE

Personal Author(s) : Feth, Lawrence L

PDF Url : ADA193421

Report Date : 01 Mar 1988

Pagination or Media Count : 5

Abstract : The attached interim report covers the first 12 month period of the project. A signal-processing computer model of human auditory perception of complex, time-varying sounds has been revised to incorporate the ability to follow a frequency that changes over time. Such frequency changes are thought to convey the information important for the perception of speech, music and other important sounds. Testing of the revised model is underway using a two alternative forced choice discrimination task. Listeners are required to distinguish between a sound with a smooth linear frequency glide and another covering the same trajectory in a series of discrete steps. We expect to determine the temporal parameters for the revised model from these discrimination experiments.

Descriptors :   *AUDITORY PERCEPTION, *COMPUTERIZED SIMULATION, *SPEECH, DEMODULATION, DISCRIMINATION, FREQUENCY, HUMANS, LINEARITY, MUSIC, PERCEPTION(PSYCHOLOGY), SIGNAL PROCESSING, SOUND, TIME, TRAJECTORIES, VARIATIONS, COMPUTER PROGRAMS

Subject Categories : Anatomy and Physiology
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE