As an example of what Raspberry Pi Audio Boards can do, let’s walk through the creation of a toy chatter box. Its on-board microphone, programmable button and speaker driver make the Codec Zero an ideal choice for this application.

A random pre-recorded five-second audio clip will be played when the button is pressed. After holding for ten seconds, a notifying burp sound will be emitted, after which a new five-second clip will be recorded. Holding the button down for more than 20 seconds will play a second burp sound, and then erase all previous recordings.

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