Removal of Noise from Noise-Degraded Speech Signals. Panel on Removal of Noise from a Speech/Noise Signal
Abstract
Techniques for the removal of noise from noise-degraded speech signals were reviewed and evaluation with special emphasis on live radio and telephone communications and the extraction of information from similar noisy recordings. The related area on the development of speech-enhancement devices for hearing-impaired people was reviewed. Evaluation techniques were reviewed to determine their suitability, particularly for the assessment of changes in the performance of workers who might use noise-reduction equipments on a daily basis in the applications cited above. The main conclusion was that noise-reduction methods may be useful in improving the performance of human operators who extract information from noisy speech material despite a lack of improvement found in using conventional closed-response intelligibility tests to assess those methods. Keywords: Speech intelligibility; Noise reduction; Speech enhancement; Speech testing; Speech perception.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1989
- Accession Number
- ADA212876
Entities
Organizations
- National Research Council