Hardware & Tools
Cape4all on BeagleBone Black
This setup is based on the Beaglebone Black or Beaglebone Black wireless single-board computer.
It is extended with a multi-channel audio interface board in the form of a “cape” for the BeagleBone: the Cape4all.
Its hardware design is available under open-source license on Github and was developed by the Leibniz University Hannover in the Cluster of Excellence “Hearing4all” with a focus on low-latency multi-channel audio capabilities.
In collaboration with Daniel James and Chris Obbard from 64Studio an ALSA sound driver was developed and a Linux system was optimized for low-latency, real-time audio processing with openMHA: Mahalia.
More information and source files are availble under the links given above. ISO images of the Mahalia distribution can be downloaded from mahalia.openmha.org.
Publications / Conference Contributions
Linux Audio Conference 2018 (paper)
Embedded Linux Conference 2018
Heise (in German)
A user project running openMHA on a Raspberry Pi setup with (almost) off-the-shelf audio hardware was introduced at the end of 2017. Further details and pointers are found in a corresponding news entry.