Low-latency and power-efficient audio applications on Linux

Building Linux-based low-latency audio processing software for nowadays multi-core devices can be cumbersome. I’ll present some of our on-going research on the topic at the Real-Time Systems Lab of Scuola Superiore Sant’Anna, focusing on sound synthesis on Android where power-efficiency is a must.

The talk will provide basic background information on how the audio sub-system of Linux works, in terms of interactions between the Linux kernel and the ALSA sound architecture, including how user-space applications normally cope with low-latency requirements, touching briefly on design concepts behind the existence of the JACK low-latency framework. Then, a few concepts will be provided on the peculiarities of the Android audio processing pipeline, crossing the concepts with the due complications arising from the world of mobile and power-efficient devices. Throughout the talk, I’ll touch upon concepts behind our research efforts on the topic, describing how properly designed real-time CPU scheduling strategies can make a difference in what is achievable in this area.

track icon Multimedia
duration icon 45 min
language icon English
level icon Intermediate


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LinuxLab - Building smarter devices - is the conference on Linux, kernel, embedded, build systems, security, virtualization technologies and open source. LinuxLab is organized by Develer, the company who launched events like Better Software, Better Embedded, QtDay, PyCon and EuroPython.