Time compression reduces the redundancy of speech in addition to reducing the available processing time. In order to improve speech understanding in older people with this deficiency, Vaughan and Margaret Mortz, WSU Spokane professor of electrical engineering, are working to develop a computer program to slow the rate of speech without distortions. The idea is that when people talk and leave spaces between words, they enunciate better. Initially, the model tested in the lab will examine the effect of various rates of speech on quality and intelligibility of recorded speech for older listeners. Ultimately a wearable device similar to a hearing aid could provide real-time slowing of the rate of speech.
Older adults represent a significant portion of our population.
Many withdraw from social interaction due to their inability to participate in situations where verbal exchange is required. It is hoped that this research will contribute to the ability of older adults to continue to participate effectively in society without the obstacle of a communication disability.