How people’s voice reflects their position of power. How “gravitas” is communicated through tone and loudness. (Your perception of sound changes considerably with its “loudness”, this is quite noticeable in how music is mastered and played )
http://mashable.com/2014/11/29/powerful-voice/
Includes a comparison of how Maggie Thatchers voice was before and after. Having grown up through the Maggie Years. I find it a very interesting comparison.
Random Musings 