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Raspberry Pi for Secret Agents by Stefan Sjogelid

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Chapter 2. Audio Antics

Greetings! Glad to see that you have powered through the initial setup and could join us for our first day of spy class. In this chapter, we'll be exploring the auditory domain and all the fun things humans (and machines) can do with sound waves.

Configuring your audio gadgets

Before you go jamming all your microphones and noisemakers into the Pi, let's take a minute to get to know the underlying sound system and the audio capabilities of the Raspberry Pi board itself.

Introducing the ALSA sound system

The Advanced Linux Sound Architecture (ALSA), is the underlying framework responsible for making all the sound stuff work on the Pi. ALSA provides kernel drivers for the Pi itself and for most USB gadgets that produce or record ...

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