Changes

A '''voice''' is the [[sound]] or sounds projected by creature, mainly [[human]]s, in the form of singing, screaming, shouting, etc.  A voice is necessary for all spoken [[language]]s.

A '''voice''' is the [[sound]] or sounds projected by creatures, mainly [[human]]s, in the form of speaking, singing, screaming, shouting, etc.  A voice is necessary for all spoken [[language]]s.

Voice also refers to a form of a [[verb]].  The ''[[active voice]]'' indicates that the subject is acting (e.g., "I ate the sandwich"), whereas the ''[[passive voice]]'' indicates that the subject is being acted on (e.g., "The sandwich was eaten").<ref>[http://owl.english.purdue.edu/handouts/grammar/g_vmood.html Verbs: Voice and Mood]</ref>

Voice also refers to a form of a [[verb]].  The ''[[active voice]]'' indicates that the subject is acting (e.g., "I ate the sandwich"), whereas the ''[[passive voice]]'' indicates that the subject is being acted on (e.g., "The sandwich was eaten").<ref>[http://owl.english.purdue.edu/handouts/grammar/g_vmood.html Verbs: Voice and Mood]</ref>