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2 2016

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LibLaura: A Library for Binaural Sound Source Localization

Kruczkowski P., Mąka T.

Measurement Automation Monitoring

2016

Vol. 62, No. 12

399--401

In this work the software library for binaural sound localization is presented. The main purpose of the library are the applications for localization tasks in audio systems based on two microphones. The implemented mechanisms include binaural single sound source localization, ITD (Interaural Time Difference) and ILD (Interaural Level Difference) cues and support real-time analysis. LibLaura is written in C++ language and is easily extensible to support new features, time delay estimators and user-defined callbacks.

An implementation of binaural sound source localization in programmable devices

Łazoryszczak M., Wernik C.

Measurement Automation Monitoring

2016

Vol. 62, No. 12

396--398

In this paper an example of hardware implementation of binaural sound source localization is presented. Using only two microphones, which correspond approximately to binaural hearing, limits the possibility of exact sound source localization. In contrast to human auditory system (HAS), only the angle of arrival determination is possible in implemented system. Moreover, the angle of arrival (AoA) could be determined here in a limited range of values located on a half-plane. First, the base formulas used by implemented algorithm are shown. Next, selected hardware platforms and peripheral modules are described. The VHDL tools for synthesis and implementation are used. Finally, resources consumed by hardware CPLD/FPGA implementation and selected test results are presented.