Inlämning av Examensarbete / Submission of Thesis

Krishna Chaitanya Chunduri; Chalapathi Gutti MEE 05:33, pp. 53. TEK/avd. för signalbehandling, 2005.

The work

Författare / Author: Krishna Chaitanya Chunduri, Chalapathi Gutti
bsa@bth.se
Titel / Title: Implementation of Adaptive Filter Structures on a Fixed Point Signal Processor for Acoustical Noise Reduction
Abstrakt Abstract:

The problem of controlling the noise level in the environment has been the focus of a tremendous amount of research over the years. Active Noise Cancellation
(ANC) is one such approach that has been proposed for reduction of steady state noise. ANC refers to an electromechanical or electro acoustic technique of
canceling an acoustic disturbance to yield a quieter environment. The basic principle of ANC is to introduce a canceling “anti-noise” signal that has the same amplitude but the exact opposite phase, thus resulting in an attenuated residual noise signal. Wideband ANC systems often involve adaptive filter lengths, with hundreds of taps. Using sub band processing can considerably reduce the length of the adaptive filter. This thesis presents Filtered-X Least Mean Squares (FXLMS) algorithm to implement it on a fixed point digital signal processor (DSP),
ADUC7026 micro controller from Analog devices. Results show that the
implementation in fixed point matches the performance of a floating point
implementation.

Ämnesord / Subject: Signalbehandling - Signal Processing
Telekommunikation - Telecommunications
Mathematics\Discrete Mathematics
Nyckelord / Keywords: Noise reducation, Adaptive filter structures, Fixed point procesor

Publication info

Dokument id / Document id:
Program:/ Programme Magisterprogram Telekommunikation och Signalbehandling/Masters progr. Telecom & Signal Proc.
Registreringsdatum / Date of registration: 02/13/2006
Uppsatstyp / Type of thesis: D-Uppsats/Magister/Master

Context

Handledare / Supervisor: Benny Sällberg
bsa@bth.se
Examinator / Examiner: Benny Sällberg
Organisation / Organisation: Blekinge Institute of Technology
Institution / School: TEK/avd. för signalbehandling
S-372 25 Ronneby
+46 455 38 50 00
Anmärkningar / Comments:

Krishna chaitanya chunduri, Ph:00918662540268, India

Files & Access

Bifogad uppsats fil(er) / Files attached: report.pdf (465 kB, öppnas i nytt fönster)