Effects of feedback filtering on nasalization and self-perception of nasality.
The effects of feedback filtering on nasality perception were investigated by having speakers produce sentences while hearing their voices unfiltered and low-pass filtered with cut-off frequencies of 1000, 500, and 300 Hz. As they spoke, speakers judged the nasality in their productions using a ratio scale. Measurements of nasalization were made with a miniature accelerometer attached to the side of the speaker's nose. Data obtained indicate that the speakers decreased their nasalization slightly when they heard their voices low-pass filtered at each cut-off frequency. However, they did not perceive consistent changes in their own nasality during the filtered conditions. These findings are interpreted as suggesting that nasalization is influenced by filtering air-conducted auditory information and that relationships between the acoustic correlates of nasalization and self-perception of nasality are complex.
D005246:Feedback; D005260:Female; D006801:Humans; D008144:Loudness Perception; D009666:Nose / Q000502:physiology; D010470:Perceptual Masking; D013061:Speech Acoustics; D013067:Speech Perception; D014831:Voice; D014833:Voice Quality