I have none[i have been told i should try this[but no formal training or experience.
I am a retired School Principal with 25 years experience in Public School Administration.
Elementary
Middle School
High School
I have no formal voice training,but I have had a variety of training in preparing to manage the professionals and children we educated from 1976-2009.
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I have tinkered with Iphone,desk pc,IPAD ECT..
I have relied heavily on my voice over the course of my life to manage situations effectively both professionally and socially.I realized the benefit of having a commanding voice and being effective in it's use.
As a sports official I have quieted "full gymnasiums,and auditoriums.I have comforted crowds during times of turmoil,and I have been sought out and placed in leadership roles inpart due to my commanding voice.
I am currently working in a Capacity as Testing coordinator of Human Resources.Effective use of my voice continues to be a critical resource.
Giving directives,directing,reading aloud,managing crowds and audiences,training,recording audio are a few skills that may be transferable.