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Raspberry Pi Essentials

Raspberry Pi Essentials

By : Jack Creasey
3.8 (5)
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Raspberry Pi Essentials

Raspberry Pi Essentials

3.8 (5)
By: Jack Creasey

Overview of this book

Programmers new to the Raspberry Pi and novice programmers with little to no experience with micro board computing will find the book useful. A basic knowledge of programming languages in general will prove useful for a better understanding of the topics.
Table of Contents (10 chapters)
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9
Index

Configuring the Raspberry Pi to support high-quality sound

Playing or capturing PCM audio is a very CPU-intensive and time-sensitive task. The data packets that define each block of acquired or moved data need to be handled with minimal latency. Otherwise, you may hear clicks, plops, or annoying gaps in the audio. You may even experience application hangs.

Tip

In Chapter 3, Raspberry Pi and Cameras, we discussed the ability to put the Pi into Turbo mode, which automatically raises and lowers the CPU clock frequency on demand. For the audio, we will need to turn this feature off to ensure that the Pi runs at a constant CPU frequency, thus ensuring that all the software timing is exact. We suggest that you fit a heat sink to the CPU. This will prevent the system software from cutting back the clock speed due to the excessive temperature rise.

If you turn on Turbo mode using the command sudo raspi-config/overclock, we recommend that you only use the Medium (900 MHz) setting, which is a more conservative...

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