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Convention Paper

A Low Latency Multichannel Audio Processing Evaluation Platform

Authors: Wang, Yonghao; Zhu, Xiangyu; Fu, Qiang

AES Convention 132 · Paper 8678 · April 2012

Abstract

For live digital audio systems with high-resolution multichannel functionalities, it is desirable to have accurate latency control and estimation over all the stages of digital audio processing chain. The evaluation system we designed supports 12 channel, 24 bits Sigma Delta based ADC/DAC, incorporating both a programmable FPGA and a Digital Signal Processor. It can be used for testing and evaluation of different ADC/DAC digital filter architectures, audio sample buffer subsystem design, interrupt and scheduling, high level audio processing algorithm and other system factors, which might cause the latency effects. It also can estimate the synchronization and delay of multiple channels.

Details

Published in
AES Convention 132
AES Convention
132
Paper number
8678
Publication date
April 6, 2012
Session subject
Audio Equipment and Instrumentation
Affiliation
Birmingham City University, Birmingham, UK; Queen Mary University of London, London, UK; Hebei University of Science and Technology, Shijiazhuang, China; Shijiazhuang Mechanical Engineering College, Shijiazhuang, China (See document for exact affiliation information.)
Type
Convention Paper