Quantization errors in overlapped block digital filtering methods
Author
Daloğlu, Mustafa
Serpedin, E.
Date
2013Source Title
AICT 2013 : The Ninth Advanced International Conference on Telecommunications
Publisher
IARIA
Pages
117 - 122
Language
English
Type
Conference PaperItem Usage Stats
101
views
views
35
downloads
downloads
Abstract
In digital signal processing applications involving filtering long sequences, block filtering methods like overlapsave and overlap-add are widely used. Like all finite-precision applications, overlap-save and overlap-add methods are also affected by quantization errors. The goal of this paper is to calculate and make a quantitative comparison of the overall quantization noise resulting from the two methods in terms of power (variance) of the quantization noise. Multiple quantization noise sources are taken into consideration in the computation of the variances. The calculations reveal that the overlap-add approach is more prone to quantization noise compared to the overlap-save approach due to the addition of overlapping sections between overlap-add output blocks. Copyright © 2013 IARIA.
Keywords
Block filterOverlap-add
Overlap-save
Quantization noise
Signal processing
Block digital filtering
Block filter
Multiple quantizations
Overlap-add
Overlap-save
Quantitative comparison
Quantization errors
Quantization noise
Image coding
Permalink
http://hdl.handle.net/11693/28028Collections
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