A Power-Efficient FFT Preprocessing Algorithm Utilizing Analysis Filter Bank

A new algorithm for efficient low delay filter bank design

Historically, exact reconstruction FIR lter banks have had system delays of L?1, where L is the length of the analysis and synthesis lters. Recently it was shown that the system delay could be made less than L ? 1, which is attractive in applications like speech coding where excessive delays are annoying. In this paper, a formulation and new design algorithm are introduced for two-band low-dela...

An efficient algorithm for FIR filter bank completion

ABSTRACT This paper presents an algorithm for designing an FIR paraunitary filter bank when one or several filters are given. The algorithm is based on the properties of the balanced state-space representation of the polyphase matrix. We show that this representation may be computed via a single RQ decomposition, thus gaining significant efficience with respect to previous work. Application of ...

Efficient Non-linear Changed Mel-filter Bank VAD Algorithm

This paper introduces efficient non-linear changed mel-filter bank (MFB) voice activity detection (VAD) algorithm. Non-linear changed mel-filter bank outputs improve detection of parts in the speech signal, where vowels, diphthongs and semivowels are present. To make voice activity detection of consonants in the speech signal as good as possible, the hangover and hangbefore criteria are used. F...

Analysis of mammographic microcalcifications using a computationally efficient filter bank

We present a new method for classification of malignant and benign clusters of microcalcifications in digital mammograms. A computationally efficient infinite impulse response (IIR) quadrature mirror filter (QMF) bank is used as a tool for extracting texture and shape features. The filter bank splits the input image into four subbands: low-low band, low-high band, high-low band and highhigh ban...

Algorithm Genetic Matched Filter Bank