Summary
Audio devices may appear to be simple devices, but as shown in this chapter, they are very complex, and embedded devices can use them for several different tasks. Also, we presented a complete class of audio tools useful to do a lot of different signal manipulation. We also saw that using the ALSA drivers, we can use these tools in the same manner even on different audio devices.
In the next chapter, we'll see another important devices class. This is a class of devices that allows developers to manage images. This is the class of video devices.
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