Nonlinear spectrum compression for the hearing impaired via a frequency-domain processing algorithm

Loading...
Thumbnail Image
Authors
Paarmann, Larry D.
Issue Date
2006-08-30
Type
Conference paper
Language
en_US
Keywords
Attenuation , Auditory system , Chirp , Signal processing algorithms , Testing , Throughput , Video compression
Research Projects
Organizational Units
Journal Issue
Alternative Title
Abstract

In this paper, the results of both normal-hearing, and profoundly hearing-impaired adults, tested with spectrum compressed speech via the modified chirp-z algorithm, with and without visual stimuli, are reported. Ten normal-hearing adult listeners and five profoundly hearing-impaired adult listeners were asked to identify nonsense syllables presented auditorily and bimodally (audition and vision) via video tape in two conditions: lowpass filtered or unprocessed, and spectrum compressed. The lowpass filtered and spectrum compressed speech occupies the same spectrum width of 840 Hz; at 900 Hz and above, the attenuation is at least 60 dB. The spectrum compression is performed by means of a modified chirp-z algorithm, and is described in this paper. The testing results are significant and are reported in this paper. While the signal processing approach is somewhat intensive, the realtime throughput delay is small. Recent advances in hardware speed suggest that realization in a hearing aid is feasible.

Description
Click on the DOI link below to access the article (may not be free)
Citation
Paarmann LD. 2006. "Nonlinear spectrum compression for the hearing impaired via a frequency-domain processing algorithm". Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference. 1: 240-3.
Publisher
IEEE
License
Journal
Volume
Issue
PubMed ID
DOI
ISSN
1557-170X
EISSN