Acoustic aspects of the aging voice.
D000328:Adult; D000367:Age Factors; D000368:Aged; D006801:Humans; D008297:Male; D008875:Middle Aged; D011932:Reading; D012494:Sampling Studies; D012923:Social Class; D013016:Sound; D013060:Speech; D013637:Tape Recording; D013997:Time Factors; D014705:Verbal Behavior; D014831:Voice