Voice, Human (Range Of The). The range of the human voice is quite astounding, - there being about 9 perfect tones, but 17,592,186,044,515 different sounds; thus 14 direct muscles, alone, or together, produce 16,383 ; 30 indirect muscles, ditto, 173,741,823, and all in co-operation produce the number we have named ; and these, independently of different degrees of intensity. A man's voice ranges from bass to tenor, the medium being whs called a barytone. The female voice ranges from contral o to soprano, the medium being tinned a mezzo-soprano, - whereas, a boy's Voice is alto, or between a tenor and a treble.