Understand the complete audio stack in embedded Linux system: hardware components, Linux kernel drivers and subsystem and user-space interfaces and components.
- Duration: 2 days / 16 hours (on-site) – 4 half days / 16 hours (on-line)
- Agenda: on-site, on-line
- Training materials: slides
- Written language: English
- Available oral languages: English and French.
Types of sessions
- Private on-site session, on request
- Private on-line session, on request
- Public on-line session, dates below
Dates of public on-line sessions
|Cost and registration|
|Embedded Linux audio (agenda)||Feb 5, 6, 7, 8, 2024
+ extra session on Feb 9 if needed
|14:00 – 18:00 (Paris, UTC+1)
08:00 AM – 12:00 PM (New York, UTC-5)
|16 h||English||Alexandre Belloni||
Discount: 569 EUR*
Regular: 669 EUR*
|Additional sessions at future dates will be announced progressively. We generally announce new sessions when existing ones are either full or already passed.|
*The price is excluding VAT. The online shop charges VAT, except for businesses outside of France if they provide valid company information at registration time. Businesses in France, and individuals registering by themselves must pay VAT.
The discount rate is applicable at the following conditions:
- Booking at least 1 month prior to the training session start
- Booking and payment made online using credit card
- Limit of 6 seats per training session at the discount rate
If you are unable to register through our online shop, do not hesitate to contact us, we will be able to provide a training contract and offer alternative payment methods.
Registration on the online shop remains available until the session starts, subject to seat availability.
This course targets engineers who need a detailed level of understanding of audio concepts, audio hardware components used in typical embedded systems and how the audio stack works in Linux.
At the end of this course, you will be familiar with all the elements required to efficiently configure audio hardware at the Linux kernel level and the audio APIs available in Linux user-space.
- Be able to understand the basics of audio theory: analog vs. digital, sampling theory, audio formats and audio hardware
- Be able to understand the architecture of ASoC, the Linux kernel subsystem for audio devices used in embedded systems, the role of the different drivers and the Device Tree representation
- Be able to write a Device Tree describing the topology of audio hardware on an embedded Linux system
- Be able to use complex audio routing capabilities, audio power management capabilities, and complex audio components such as auxiliary devices or amplifiers
- Be able to configuration the ALSA user-space components and ALSA audio widgets
- Be able to understand the available user-space APIs for playing and capturing audio, as well as audio servers such as Pulseaudio, Pipewire or Jack, and the GStreamer multimedia pipeline library
See the detailed agenda.
The training materials will be made available in July 2023. Bootlin delivered a private session of this course in April 2023 and is polishing the training materials for publication in July 2023.
The lectures in our course is followed by a practical demonstration, performed on an embedded ARM board, representing about 20% of the whole course time.
- Solid experience with the C programming language: participants must be familiar with the usage of complex data types and structures, pointers, function pointers, and the C pre-processor.
- Experience with low-level development in Linux and hardware interfaces: participants should have a minimal understanding of memory management, interaction with common hardware interfaces (registers, interrupts), the interaction between Linux user-space applications and the Linux kernel (system calls). Following Bootlin’s Linux kernel driver development course allows to fulfill this pre-requisite.
- Minimal English language level: B1, according to the Common European Framework of References for Languages, for our sessions in English. See the CEFR grid for self-evaluation.
- For on-line courses:
- Computer with the operating system of your choice, with the Google Chrome or Chromium browser for videoconferencing.
- Webcam and microphone, from an audio headset
- High speed access to the Internet
- Optionally: the hardware accessories needed for the practical labs, if you want to reproduce the practical labs by yourself. Note that this is not mandatory: you can follow the course without those hardware accessories, as the trainer will perform the practical labs as live demonstrations.
- For on-site courses:
- Training room
- Video projector
- One recent PC computer for each desk (1 or 2 persons) installed with Linux. See the training agenda for detailed requirements.
- Unfiltered and fast connection to the Internet
- Bootlin provides the hardware accessories for the practical labs for the duration of the course
By the way, you can also see evaluations from previous sessions. In the same way we are transparent with our training materials, we share all the evaluations that we collect, not only the best ones.
Participants with disabilities
Participants with disabilities who have special needs are invited to contact us to discuss adaptations to the training course.
For any question, registration or comment, you can contact us:
- phone : +33 484 258 097