Tag: embedded

Squeeze C++ JUCE and Bottle It Into Linux Embedded Devices and More – Stefano Zambon – ADC 2024

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https://audio.dev/ -- @audiodevcon​
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Squeeze C++ JUCE and Bottle It Into Linux Embedded Devices and More - Stefano Zambon - ADC 2024
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Running JUCE applications on embedded Linux devices is not a new thing. The topic has been treated in previous ADCs and, most notably, at ADC 2016 Felipe Tonello introduced a repository for Yocto/OpenEmbedded to make the task easier.

However, several things have changed in the meantime both in JUCE and in the embedded Linux world. This talk will present a new integration between CMake-based JUCE projects and Yocto/Openembedded, targeting modern embedded Linux platforms using the Raspberry Pi as an example.

The focus will be on the entire embedded development workflow, showing how to build target filesystem that can be run on the devices, cross-compiling SDKs, and automated testing tools suitable for modern CI/CD integration.
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Slides: https://data.audio.dev/talks/2024/squeeze-juce-and-bottle-it-into-embedded-devices/slides.pdf
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Stefano Zambon

CTO at Elk, wearing multiple hats (embedded developer, DSP programmer, technical manager)
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ADC is an annual event celebrating all audio development technologies, from music applications and game audio to audio processing and embedded systems. ADC’s mission is to help attendees acquire and develop new audio development skills, and build a network that will support their audio developer career.
Annual ADC Conference - https://audio.dev/
https://www.linkedin.com/company/audiodevcon

https://facebook.com/audiodevcon
https://instagram.com/audiodevcon
https://www.reddit.com/r/audiodevcon/
https://mastodon.social/@audiodevcon
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Streamed & Edited by Digital Medium Ltd: https://online.digital-medium.co.uk
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Organized and produced by JUCE: https://juce.com/
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Special thanks to the ADC24 Team:

Sophie Carus
Derek Heimlich
Andrew Kirk
Bobby Lombardi
Tom Poole
Ralph Richbourg
Jim Roper
Jonathan Roper
Prashant Mishra

#juce #embedded #cpp #adc #audiodev #dsp #audio #audioprocessing #audioproduction #audioprogramming #musictech #soundtech #audiotech #audiotechnology

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Quality Audio for Low Cost Embedded Products – An Exploration Using Audio Codec ICs – ADCx India 2025

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https://audio.dev/ -- @audiodevcon​
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Quality Audio for Low Cost Embedded Products - An Exploration Using Audio Codec ICs - Shree Kumar, Atharva Upadhye - ADCx India 2025
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Designing a decent quality audio solution at a low cost is an important challenge in embedded systems. This is made tricky as the bar for audio quality is set pretty high by everyday consumer products, which rely on highly integrated solutions. Consumer solutions achieve low cost, but that comes with the requirement of high volumes production. Embedded products typically do not scale to such volumes, which is what makes this a challenge.

With microcontroller based solutions, narrowing down the proper choice of components is an iterative process, especially for teams that have not dealt with audio at the lowest levels. The last mile cost optimization can be non-obvious, needing to push things down to clocking architecture.

In this talk, we will walk through a few audio solutions we investigated using audio codec ICs, with various cost/quality tradeoffs: Cirrus Logic WM8758, Princeton Tech PT8211, finally settling on Everest Semiconductor ES8388. The base hardware board is based on the Raspberry Pi RP2040 microcontroller, making good use of the PIO peripheral. We will cover essentials such as the I2S interface (master/slave), and codec configuration. We will also explain the clocking architecture (and software implementation) that eliminates the discrete crystal sometimes required for the codec, achieving the lowest cost per board.
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Slides: https://data.audio.dev/talks/ADCxIndia/2025/quality-audio-for-low-cost-embedded-products/slides.pdf
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Shree Kumar

Shree is an embedded software engineer, and an independent consultant, with over two decades of experience across many layers of the system software stack. He headed the software team that designed India's first 3G tablet. Some of his early significant work was in High Performance Computing (HPC) visualization, winning awards at SuperComputing 2007 (SC '07) conference. He also created KitePhone, the world's first DIY 3D printable Android smartphone concept. Shree enjoys long walks and longer bicycle tours. Recently, he has been spending time looking at government policies, especially related to semiconductors.
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Atharva Upadhye

Atharva is an accidental engineer with a background in sports. He has always wanted to work on hardware stuff. He is currently serving time at Samsung Semiconductors, working on SSDs.
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ADC is an annual event celebrating all audio development technologies, from music applications and game audio to audio processing and embedded systems. ADC’s mission is to help attendees acquire and develop new audio development skills, and build a network that will support their audio developer career.
Annual ADC Conference - https://audio.dev/
https://www.linkedin.com/company/audiodevcon

https://facebook.com/audiodevcon
https://instagram.com/audiodevcon
https://www.reddit.com/r/audiodevcon/
https://mastodon.social/@audiodevcon
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Streamed & Edited by Digital Medium Ltd: https://online.digital-medium.co.uk
---

Organized and produced by JUCE: https://juce.com/
---

Special thanks to the ADCx India Team:

Sophie Carus
Derek Heimlich
Andrew Kirk
Bobby Lombardi
Tom Poole
Ralph Richbourg
Jim Roper
Jonathan Roper
Prashant Mishra

#adc #embedded #codec #audiodev #dsp #audio #conferenceaudio #audioprocessing #audioproduction #audioprogramming #musictech #soundtech #audiotech #audiotechnology

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Analysis of the Different Architectures Used in Embedded Audio Signal Processing – Marco Del Fiasco

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https://audio.dev/ -- @audiodevcon​
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Crunching the Same Numbers on Different Architectures - Analysis of the Different Architectures Used in Embedded Audio Signal Processing - Marco Del Fiasco - ADC 2024
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DSP, microcontroller or a general purpose CPU? What are the major factors affecting design choices in embedded systems today, and how do they compare in terms of computational speed?

Since 1978 DSP chips were invented to cope with some limitations of existing CPUs. Audio processing has always been challenging because of inherently high demand for both throughput and low latency processing features. This led the chip manufacturers to develop specific architectures for such challenging tasks.

During the years the increasing demand of computation led also to develop on-chip hardware accelerators for specific tasks like FIR, IIR and DMA, making the machines more and more performant generation after generation. Hardware acceleration is great, but has a drawback: the design then becomes more and more architecture-locked, preventing a faster renewal of the OEM platforms and the embracement of new emerging technologies.

While the DSP world was evolving, also the general purpose CPUs made very big steps forward in terms of computational speed. They typically run with some high end operating systems like Linux that offer a wide set of ready to use features such as networking, USB, BT… and a huge number of available libraries you can use to fasten the audio application development cycle. This makes them very attractive in terms of flexibility.

In the middle, between specialised DSPs and general purpose CPUs there are microcontrollers. They integrate some other hardware that a product usually requires and provide low power operation. We will explore why they are one of the choices available and how they position in terms of computational performance.

The aim of this talk is to give an overview of the different architectures used in embedded audio signal processing, their advantages and disadvantages, and try to compare them with a holistic view. This will take into account computation power, ease of use, BOM cost, power requirements, expandability and give an overview of why all the architectures are still there in 2024 competing after so many years.

We will make use of real code for the comparison that will also highlight how the different chip architectures have an impact on code design.

Will there be any winner?
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Slides: https://data.audio.dev/talks/2024/crunching-the-same-numbers-on-different-architectures/slides.pdf
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Marco Del Fiasco

I am a freelance embedded engineer helping audio companies to develop modern digital platforms and algorithms.

I have 15 years experience with many projects across the music industry, pro audio and car audio.

My expertise spans from DSP chips and microcontrollers to modern CPUs running hard realtime audio processing.

I developed several algorithms, peripheral drivers, libraries and frameworks making use of bare-metal, embedded RTOS and embedded Linux.
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ADC is an annual event celebrating all audio development technologies, from music applications and game audio to audio processing and embedded systems. ADC’s mission is to help attendees acquire and develop new audio development skills, and build a network that will support their audio developer career.
Annual ADC Conference - https://audio.dev/
https://www.linkedin.com/company/audiodevcon

https://facebook.com/audiodevcon
https://instagram.com/audiodevcon
https://www.reddit.com/r/audiodevcon/
https://mastodon.social/@audiodevcon
---

Streamed & Edited by Digital Medium Ltd: https://online.digital-medium.co.uk
---

Organized and produced by JUCE: https://juce.com/
---

Special thanks to the ADC24 Team:

Sophie Carus
Derek Heimlich
Andrew Kirk
Bobby Lombardi
Tom Poole
Ralph Richbourg
Jim Roper
Jonathan Roper
Prashant Mishra

#adc #embeddedsystems #embedded #audiodev #dsp #audio #audiosoftware #audioprocessing #audioproduction #audioprogramming #linux #soundtech #audiotech #audiotechnology

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