So, for example, if I was angry and had to hide it, which I often did, being very adept at concealing how I really felt, then the voice would sound frustrated.
Jos esimerkiksi olin vihainen ja minun piti kätkeä se, kuten usein kävi, koska olin taitava  peittämään todelliset tunteeni, ääni kuulosti turhautuneelta.