Browsing by Author "Hsu, Shuo-Wen"

Now showing 1 - 2 of 2

A Low Complexity Speech Coder for Binaural Communication in Hearing Aids
(2012)
Hsu, Shuo-Wen
;
Chang, Tian-Sheuan
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
This paper presents a low complexity speech coder with the adaptive Minimum-Maximum Scalar Quantization(MMSQ) method suitable for binaural communication in hearing aids. Compared to the fixed rate MMSQ, the adaptive MMSQ can achieve similar or better compression ratio with 13dB SNR improvement. The final codec implementation with 0.18um CMOS process only costs 6K gate count with 118uW power consumption.
A Real Time 1080P 30FPS Gaussian Mixture Modeling Design for Background Subtraction And Object Extraction
(2014-01-01)
Hsu, Shuo-Wen
;
Chang, Tian Sheuan
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
The Gaussian Mixture Modeling (GMM) algorithm with connected component labeling as object extraction provide robust background subtraction but suffer from complexity, and large buffer or high bandwidth due to the frame level operations. For real time application needs, this paper proposed a block based GMM design for background subtraction with message passing between blocks to avoid performance drop. The corresponding parallel hardware design can reach real time 1080P@30fps and cost 164.82K gate-counts at 125MHz with 90nm process.