Auditory – sound, tone, and audio
Sound can be an important indicator for the wearer, calling attention to potential errors, or for confirmation that something has happened. If we use sound effectively, we may not need to have a display for messages – if the tones are clear in their use. Understanding a person’s comprehension and interpretation of distinct sounds, pitches, and even the length of time a sound is emitted will enable effective communication. We can make interactions meaningful.
We can use buzzers and speakers (Figure 6.20 shows examples), though for more complex sound, there are MP3 boards that we can hook up to our circuits. We won’t be exploring MP3 boards as it’s a little outside the scope of this chapter, but it’s important to know that they exist. They can be great for providing better sound or communication through an audio file. It may provide a soundtrack to tasks or sensor input, for example. You may want to do some...
