音声
アニメーション
- Don't assume that a user will hear audio information. This applies as much to users with broken soundcards as it does to those with hearing impairments!
- Don't use audio as the only means of conveying information. Give the user the option to have all audio information provided in a visual way as well. This includes providing closed captioning or transcripts for any important spoken sound clips.
- Allow users to configure frequency and volume of all warning beeps and other sounds. This includes being able to turn off sound altogether.