The Larynx- Why is my voice different than yours? High vs low pitch, loud vs whisper.

The Larynx- Why is my voice different than yours?  High vs low pitch, loud vs whisper.
please demonstrate a clear understanding of the topic. Critical thinking about topic was included. Please use Appropriate scientific college-level sources. Post contained APA formatted references and in-text citations. The post was grammatically correct. Please no allow No more than 400 words! thanks!