Reconstruction of multiple-user voice commands using a hybrid system based on thin-film electronics and CMOS

L. Huang, J. Sanz-Robinson, T. Moy, Y. Hu, W. Rieutort-Louis, S. Wagner, James Christopher Sturm, Naveen Verma

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

This paper presents a system consisting of an array of thin-film microphone channels on glass, which can be formed on large substrates. Each microphone channel consists of a polyvinylidene difluoride (PVDF) piezoelectric transducer as well as amplifier and scan circuits basedon amorphous-silicon (a-Si) thin-film transistors (TFTs). The scan circuits multiplex signals from multiple channels to a CMOS IC for readout. By spatially distributing the channels on a large substrate, audio signals from multiple simultaneous speakers in a space can be both acquired in closer proximity and separated, enabling a multi-user human-computer interface based on voice commands. To overcome low TFT performance in the scan circuits (which limits channel sampling to below the Nyquist rate), a signal reconstruction algorithm is proposed. An 8-channel system demonstrates acquisition and reconstruction of 2 simultaneous audio signals at 2m distance from the array.

Original languageEnglish (US)
Title of host publication2015 Symposium on VLSI Circuits, VLSI Circuits 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
PagesC196-C197
ISBN (Electronic)9784863485020
DOIs
StatePublished - Aug 31 2015
Event29th Annual Symposium on VLSI Circuits, VLSI Circuits 2015 - Kyoto, Japan
Duration: Jun 17 2015Jun 19 2015

Publication series

NameIEEE Symposium on VLSI Circuits, Digest of Technical Papers
Volume2015-August

Other

Other29th Annual Symposium on VLSI Circuits, VLSI Circuits 2015
CountryJapan
CityKyoto
Period6/17/156/19/15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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    Huang, L., Sanz-Robinson, J., Moy, T., Hu, Y., Rieutort-Louis, W., Wagner, S., Sturm, J. C., & Verma, N. (2015). Reconstruction of multiple-user voice commands using a hybrid system based on thin-film electronics and CMOS. In 2015 Symposium on VLSI Circuits, VLSI Circuits 2015 (pp. C196-C197). [7231377] (IEEE Symposium on VLSI Circuits, Digest of Technical Papers; Vol. 2015-August). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VLSIC.2015.7231377