Training materials

Available under the terms of the Creative Commons Attribution-ShareAlike 2.5 license. This means you are free to download, distribute and even modify them under certain conditions.

PDF

• Slides: English

OpenDocument Format

• Slides: English

HTML

• Slides: English

Description

Introduction

Using the Linux system makes it easy to develop a reliable, maintainable and royalty-free embedded system with audio or multimedia support.
Developers can not only choose between several state-of-the-art Free Software user applications. They can also reuse several professional audio production toolsets to implement feature-rich systems.
As usual with Free Software, they can share their efforts and experience with other users and developers. This can dramatically reduce development and support costs.

Duration

1/2 day. 60% of theory and 40% of practical labs.

Language

English or French

Audience

Developers and integrators of audio or multimedia enabled embedded Linux systems.

Course objectives

Introduce the audience to available audio applications, toolsets and formats, as well as to Linux kernel API. Give them a first experience performing elaborate tasks with available toolsets. Give them useful resources.

Benefits

Time saved looking for the best available tools and resources. Getting started on the job much faster thanks to a valuable first experience.

Prerequisites

Knowledge and practise of Unix or GNU / Linux commands.

Needed equipment

Video projector, 1 PC computer on each desk (1 or 2 people). No operating system requirement (booting a GNU/Linux system from a cdrom).

Materials

Print and electronic copy of presentations and labs. Electronic copy of lab files.

Contents

Introduction

Glossary
Audio codecs and file formats

System perspective

System overview
Advanced Linux Sound Architecture (ALSA)
ALSA kernel drivers
Kernel low latency requirements for sound
ALSA userspace interface
Sound servers - JACK.

Free software audio

Audio players for the GNU/Linux workstation
Audio players for the embedded Linux target
Audio encoders
Misc: speech synthesis, applications, distributions, references.