Title :
A fully analog low-power wavelet-based Hearing Aid Front-end
Author :
Medeiros, Jose E. G. ; Chrisostomo, Lucas A. P. ; Meira, Gabriela ; Toledo, Yuri C. R. ; Pimenta, Mario ; Haddad, Sandro A. P.
Author_Institution :
Dept. of Electr. Eng., Univ. of Brasilia, Brasilia, Brazil
fDate :
Oct. 31 2013-Nov. 2 2013
Abstract :
This paper presents a new low-power Hearing Aid Front-end based on an analog wavelet transform signal processing. The system consists of an analog wavelet filter bank and an Automatic Gain Control (AGC), with a new topology for the decision logic and a new circuit design for the Programable Gain Amplifier (PGA). From simulation results, using a 0.18um CMOS technology, the proposed circuit shows very good performance with respect to Signal-to-Noise Ratio (SNR) and loudness behavior in an ultra low-power environment.
Keywords :
amplification; hearing aids; topology; wavelet transforms; Automatic Gain Control; CMOS technology; Programable Gain Amplifier; analog wavelet transform signal processing; circuit design; decision logic; low power wavelet based Hearing Aid Front end; topology; Approximation methods; Auditory system; Electronics packaging; Gain control; Signal to noise ratio; Wavelet transforms;
Conference_Titel :
Biomedical Circuits and Systems Conference (BioCAS), 2013 IEEE
Conference_Location :
Rotterdam
DOI :
10.1109/BioCAS.2013.6679684
