title: Mixed-signal VLSI independent component analyzer for hearing aid applications.
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 mm(2) with the power consumption of 80μW at 5 V supply voltage.
authors.forename: Shuo
authors.initials: S
authors.lastname: Li
authors.forename: Milutin
authors.initials: M
authors.lastname: Stanaćević
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D006310:Hearing Aids; D006801:Humans; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*