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Convention Paper

An Environment for Submillisecond-Latency Audio and Sensor Processing on BeagleBone Black

Authors: McPherson, Andrew; Zappi, Victor

AES Convention 138 · Paper 9331 · May 2015

Abstract

This paper presents a new environment for ultra-low-latency processing of audio and sensor data on embedded hardware. The platform, which is targeted at digital musical instruments and audio effects, is based on the low-cost BeagleBone Black single-board computer. A custom expansion board features stereo audio and 8 channels each of 16-bit ADC and 16-bit DAC for sensors and actuators. In contrast to typical embedded Linux approaches, the platform uses the Xenomai real-time kernel extensions to achieve latency as low as 80 microseconds, making the platform suitable for the most demanding of low-latency audio tasks. The paper presents the hardware, software, evaluation, and applications of the system.

Details

Published in
AES Convention 138
AES Convention
138
Paper number
9331
Publication date
May 6, 2015
Session subject
Applications in Audio
Affiliation
Queen Mary University of London, London, UK; University of British Columbia, Vancouver, BC, Canada (See document for exact affiliation information.)
Type
Convention Paper