1.2.12-3 Simple Spoken Messages

Messages should be short and simple.

Additional Information:
If a user does not understand a written message, it can be reread. That is not as easy with spoken messages, even though a REPEAT function should be provided. A better approach is to restrict use of speech outputs to short and simple messages. If a user who may not be watching a display must be given long or complex messages, it is probably better to provide a simple auditory signal such as a chime, and then display the messages visually for the user to read. In general, users will understand complex messages better when they see them displayed than when they hear them.