Title :
Mixed-signal VLSI independent component analyzer for hearing aid applications
Author :
Shuo Li ; Stanacevic, Milutin
Author_Institution :
Dept. of Electr. & Comput. Eng., Stony Brook Univ., Stony Brook, NY, USA
Abstract :
We present a mixed-signal architecture for implementation of independent component analysis designed for the task of blind source separation of acoustic sources interfacing miniature microphone array. The matrix-vector multiplication is implemented through integration of switched current sources controlled by the pulse-width modulated signals. The proposed architecture implementing 3×3 static ICA in 0.5μm CMOS technology occupies chip area of 0.49 mm2 with the power consumption of 80μW at 5 V supply voltage.
Keywords :
VLSI; blind source separation; hearing; hearing aids; independent component analysis; lab-on-a-chip; medical signal processing; microphone arrays; pulse width modulation; CMOS technology; acoustic sources; blind source separation; chip area; hearing aid applications; matrix-vector multiplication; miniature microphone array; mixed-signal VLSI independent component analyzer; power 80 muW; power consumption; pulse-width modulated signals; size 0.5 mum; switched current source control; voltage 5 V; Acoustics; Blind source separation; CMOS integrated circuits; Computer architecture; Independent component analysis; Threshold voltage;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2014 36th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/EMBC.2014.6943664
