Recognition of previously unfamiliar speakers as a function of narrow-band processing and speaker selection

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Abstract
The effect of narrow-band digital processing, using a linear predictive coding (LPC) algorithm at 2400 bits/s, on the recognition of previously unfamiliar speakers was investigated. In two experiments, rated voice distinctiveness was used to select three sets of five speakers (two sets of males and one set of females). The more distinctive male speakers and the females were better recognized than the less distinctive males for unprocessed speech. With LPC processed speech, there were large losses in speaker recognition for the more distinctive males and the females, whereas the less distinctive males showed no recognition loss. This interaction is discouraging to prospects for developing practical procedures for comparing speaker recognition over various voice communication systems.

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