Abstract
A form of preprocessed speech known to be highly intelligible to normal listeners was heard by a group of hearing-impaired subjects. The preprocessing technique involves high-pass filtering (cutoff 1100 Hz, slope 12 dB/oct) and infinite amplitude clipping. The subjects heard both unmodified and filtered/clipped word lists at 40-, 30-, and 20-dB sensation levels. Discrimination scores for 13 out of 17 cases were significantly higher at 20- and 30-dB sensation levels for filtered/clipped speech than for unmodified speech.
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