@inproceedings{c1408831395f4221a13a61e3f9f31d4d,
title = "Reconstruction of multiple-user voice commands using a hybrid system based on thin-film electronics and CMOS",
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 based on 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.",
author = "L. Huang and J. Sanz-Robinson and T. Moy and Y. Hu and W. Rieutort-Louis and S. Wagner and Sturm, \{J. C.\} and N. Verma",
note = "Publisher Copyright: {\textcopyright} 2015 JSAP.; Symposium on VLSI Technology, VLSI Technology 2015 ; Conference date: 16-06-2015 Through 18-06-2015",
year = "2015",
month = aug,
day = "25",
doi = "10.1109/VLSIT.2015.7223650",
language = "English (US)",
series = "Digest of Technical Papers - Symposium on VLSI Technology",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "C196--C197",
booktitle = "2015 Symposium on VLSI Technology, VLSI Technology 2015 - Digest of Technical Papers",
address = "United States",
}