from about 85Hz to 255Hz English 300 Hz to 3400 Hz http://en.wikipedia.org/wiki/Voice_frequency http://en.wikipedia.org/wiki/Voice_frequency http://en.wikipedia.org/wiki/Voice_frequency http://en.wikipedia.org/wiki/Voice_frequency wikipedia voice frequency VF voice frequency voice frequencies fundamental frequency English http://en.wikipedia.org/wiki/Voice_frequency English voice frequency http://en.wikipedia.org/wiki/Voice_frequency voice frequency http://en.wikipedia.org/wiki/Voice_frequency