JOURNAL ARTICLE

MilliLoc: Human computer interaction oriented acoustic millimeter-level real-time locating system.

  • Published In: Review of Scientific Instruments, 2023, v. 94, n. 1. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Wang, Zhisheng; Liu, Liang; Cui, Junning; Zhao, Dongfang; Li, Muhang 3 of 3

Abstract

The article focuses on MilliLoc, a novel millimeter-level real-time acoustic locating system designed to enhance human–computer interfaces (HCI) by addressing compatibility and accuracy challenges in existing acoustic positioning technologies. MilliLoc employs a high-performance microphone array with a 96 kHz sampling rate and a USB audio device architecture, enabling seamless connection to various smart devices without hardware modifications. It introduces an improved generalized cross-correlation phase transform (GCC-PHAT) algorithm for accurate time-delay estimation even under low signal-to-noise ratio conditions, combined with a spherical interpolation method for optimal location estimation. Experimental results demonstrate MilliLoc achieves a median 2D locating accuracy of 7.2 mm within a 60 cm sector, offering a compatible, cost-effective, and real-time solution for acoustic-based localization in HCI applications.

Additional Information

  • Source:Review of Scientific Instruments. 2023/01, Vol. 94, Issue 1, p1
  • Document Type:Article
  • Subject Area:Computer Science
  • Publication Date:2023
  • ISSN:0034-6748
  • DOI:10.1063/5.0098220
  • Accession Number:161626514
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