Subband Based Spectrum Subtraction Algorithm

A warped linear-prediction-based subband audio coding algorithm

In this paper, a novel audio coding algorithm is proposed where the warped linear prediction (WLP) technique is employed to construct a perceptual preand post-filter for subband audio coding. A modified signal-to-mask ratio (SMR) calculation is given for subband coding of the WLP residuals of audio signals. The concept of perceptual entropy (PE) is extended to subband coding, resulting in the s...

Time and Frequency Domain Analysis of Subband Spectral Subtraction Method of Speech Enhancement Using Adaptive Noise Estimation Algorithm

The speech processing systems used to communicate or store speech are usually designed for a noise free environment. But the presence of background interference in the form of additive background and channel noise drastically degrades the performance of these systems, causing inaccurate information exchange and listener fatigue. To obtain a more intelligible speech signal, and one that is more ...

A Novel Interest-Point-Based Background Subtraction Algorithm

Current Background Subtraction (BGS) algorithms are mostly pixel-based methods. We propose an Interest-Point(IP)-based BGS algorithm applicable in IP-based Computer Vision applications. Based on a block-wise processing strategy, the frames are divided into blocks of the same size. IPs inside each block are together Events. Throughout the frame sequence, the algorithm stores the Events in each b...

A Multiscale Region-Based Motion Detection and Background Subtraction Algorithm

This paper presents a region-based method for background subtraction. It relies on color histograms, texture information, and successive division of candidate rectangular image regions to model the background and detect motion. Our proposed algorithm uses this principle and combines it with Gaussian mixture background modeling to produce a new method which outperforms the classic Gaussian mixtu...

Block-based Subband Coding