We present a novel use of well-known all-pass filters in a newtowrk to perform frequency warping that we call "freping." Freping helps in breaking the Nyquist stability criterion and improves adaptive feedback cancellation. See our paper Freping.
We propose a new adaptive feedback cancellation (AFC) system in hearing aids based on a well-posed optimization criterion that jointly considers both decorrelation of the signals and sparsity of the underlying channel. See our paper AFC.
We show that a new design criterion, i.e., the least squares on subband errors regularized by a weighted norm, can be used to generalize the subband adaptive filtering framework. See our paper GPtNSAF.
A product based on FPGA had been proposed to synchronize the beats of music with the body rhythm. The EZBud project's poster.
A model named TSCM has been proposed to remove the periodical motion artifact in photoplethysmographic (PPG) signal.
Design in COMDEK Industrial Corporation. Based on the Redis database, real-time Node.js server on Debian Linux and client side module on MediaTek LinkIt 7688.