List of homophone indicators

This is a non-exhaustive list of homophone indicators.
 * according to hearsay
 * aloud
 * announced
 * articulated
 * as we hear
 * audible
 * audibly
 * auditor's
 * aurally
 * broadcast
 * by the sound of it
 * called
 * called out
 * conversational
 * for the audience
 * for the auditor
 * for the listener
 * heard
 * hearing
 * in audition
 * in conversation
 * in speaking
 * in speech
 * listen
 * on the radio
 * on the telephone
 * orally
 * outspoken
 * overheard
 * pronounced
 * read aloud
 * reported
 * reportedly
 * said
 * say
 * sound
 * sounded
 * sounding
 * speaker's
 * spoken
 * sung
 * to the audience
 * to the auditor
 * to the listener
 * told
 * utter
 * verbal
 * vocal
 * voiced