Analog Circuit Implementation for Speech Enhancement Purposes

Document type: Conference Papers
Peer reviewed: Yes
Full text:
Author(s): Benny Sällberg, Henrik Åkesson, Nils Westerlund, Mattias Dahl, Ingvar Claesson
Title: Analog Circuit Implementation for Speech Enhancement Purposes
Conference name: 38th Asilomar Conference on Signals, Systems, and Computers
Year: 2004
Pagination: 2285-9 Vol.2
ISBN: 0-7803-8622-1
Publisher: IEEE
City: Pacific Grove, CA, USA
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Signal Processing (Sektionen för teknik – avd. för signalbehandling)
School of Engineering S- 372 25 Ronneby
+46 455 38 50 00
Authors e-mail:
Language: English
Abstract: Abstract—Human speech is the main method for personal communication. However, interfering noise could degrade the intelligibility of speech, eventually resulting in errors. Thus, efficient speech enhancement algorithms are needed for example in hand held battery powered hearing aids. This paper presents an implementation of a time domain method for speech enhancement purposes; the Adaptive Gain Equalizer. The implementation is carried out on a printed circuit board using common analog electronic components, and evaluated in real-time. The proposed solution advances in prolonged battery life time, high system bandwidth, and it neither quantizes nor digitalizes data as opposed to many digital solutions.
Subject: Signal Processing\Speech Enhancement
Keywords: adaptive equalisers, analogue circuits, hearing aids, printed circuits, speech enhancement, speech intelligibility, time-domain analysis, voice communication