In Part 1, university students enrolled as music majors served as subjects to determine discrepancies between frequencies of pure tones presented through either a bone oscillator or earphones (monaurally and binaurally) and the fundamental frequency of vocal limitations of pitches of the pure tones. All vocalizations were recorded on magnetic tape and analyzed to determine fundamental frequency. In Part II, pure tones were presented at one of two intensities through a bone oscillator placed on the mastoid bone and matched in pitch with a pure tone (variable in frequency by the subject) presented through earphones (monaurally and binaurally). Discrepancies of responses in hertz from the stimulus were recorded by the examiner. Results indicated minimal differences among responses to stimuli through the bone oscillator and monaurally and binaurally through earphones. However, an increase in intensity of the stimuli through the bone oscillator raised the matched frequency of pure tones through the earphones presented either monaurally or binaurally. An increase in intensity of stimuli presented binaurally through the earphones lowered the fundamental frequency of vocal limitations of those pitches. Analyses of pitch matching responses to other stimulus conditions were also computed.