Chapter 15. Sound
In this chapter, you learn how to use sound with your Raspberry Pi. There are recipes both for playing sounds in various waysâusing loudspeakers or a buzzerâand for using a microphone to record sounds.
15.1 Connecting a Loudspeaker
You want to play sounds from your Raspberry Pi.
Attach a powered speaker such as the one shown in FigureÂ 15-1.
Having attached the speaker to the audiovisual socket, you will also need to configure the Raspberry Pi to play through the audiovisual jack, not HDMI, using Recipe 15.2.
An alternative to using a general-purpose speaker like the one shown in FigureÂ 15-1 is to use a speaker kit designed specifically for the Raspberry Pi, such as the MonkMakes Speaker Kit for Raspberry Pi, shown in FigureÂ 15-2.
This speaker is connected using the audio lead supplied with the kit, and the speaker uses the Raspberry Piâs 5V power supply, connected using the female-to-female leads.
Raspbian comes with a handy program to test that your speaker is working. Type the following command in the Terminal:
$ speaker-test -t wav -c 2 speaker-test 1.1.3 Playback device ...