Your voice contains nuances you may not be aware of
Organic Sulfur For Health
Aug 9, 2017
Click here

[snip]

The human voice is a marvelous sound instrument that has the ability to evoke a powerful response in the listener. Imagine being in a crowd where a popular singer or orator is preparing to step up to the mic. You hear them sing or say just a few notes or words and there’s usually a sense of awe and instant recognition. Composed of audio frequencies that can be mathematically measured using modern technology, our voice is a microscopic window into our emotions, our innermost thoughts, and the state of our health.

According to Wikipedia,

Bioacoustics is a cross-disciplinary science that combines biology and acoustics. Usually it refers to the investigation of sound production, dispersion and reception in animals (including humans).