diplophonia

di·plo·pho·ni·a

(dip'lō-fō'nē-ă)
Vibration of both the ventricular folds and the vocal folds, producing two simultaneous voice tones.
[diplo- + -phonia]

diplophonia

(dip-lo-fo'ne-a) [? + phone, voice]
Simultaneous production of two different voice tones. Synonym: diphonia
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References in periodicals archive ?
Vocal fold cysts may cause hoarseness, breathiness, pitch instability, diplophonia, and compensatory hyperfunction.
The physical examination was notable for a raspy voice with obvious diplophonia and mild inspiratory stridor.
On examination, the patient was moderately breathy and hoarse, and she experienced occasional episodes of diplophonia, especially at the higher frequencies.
Voice may also have a bitonality or diplophonia, with the perception of two different fundamental frequencies (or pitches) simultaneously.