The ISO-MPEG standards are widely used for high quality audio coding. They use perceptual models that require high frequency resolution. This implies two characteristics: they use high selectivity filter bank to decompose the audio signal, and the FFT frame length for the frequency masking threshold calculations is long. Both characteristics carried out a very high delay coding. In applications...

In this paper, the particle swarm optimization technique is used for the design of a two channel quadrature mirror filter (QMF) bank. A new method is developed to optimize the prototype filter response in passband, stopband and overall filter bank response. The design problem is formulated as nonlinear unconstrained optimization of an objective function, which is weighted sum of square of error...

—As a particular type of multicarrier technique, the filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) has attracted increasing attention as a potential technology for 5G. However, the intrinsic shortcoming of high Peak to Average Power Ration (PAPR) for FBMC/OQAM should be alleviated. In this paper, a new method that combines Partial Transmit Sequence (PTS) with...

Abstract: The design and characteristics of orthonormal two-band QMF filter banks, with perfect reconstruction and linear phase properties, are considered in this paper. The analysis and synthesis filter banks are implemented using allpass filters. Filters in the synthesis bank are anticausal and unstable filters and the block processing technique and an appropriate causal filter are applied fo...

A class of cosine modulated filter banks in which all the sub-band filters have linear phase is presented. It has only M bands compared to the M 2 channel structures so far reported in the literature. The filter bank uses only one prototype filter for both analysis and synthesis side and structurally guarantee perfect reconstruction property. The formulation is based on DCT-II. The necessary an...

This paper proposes a totally multiplier-less approximate reconstruction cosine modulated filter bank. The prototype filter is designed to obtain a computationally efficient, sharp transition width, finite impulse response (FIR) filter using the frequency response masking (FRM) approach combined with the canonic signed digit (CSD) representation of the coefficients. Meta-heuristic algorithms ar...

This paper presents a method for designing an orthogonal Hilbert pair of wavelets. The wavelets are generated each by an orthogonal (CQF) filter bank. The scaling filter defining the first filter bank and wavelet is given. The second filter is optimized using an exact semidefinite programming (SDP) description of a special H∞ error measure of the half-sample delay. The result of the SDP problem...

In this paper, we propose the novel application of a technique for filter design that can accurately fit measured tuning curves for the auditory fibres in the log-magnitude domain. This method provides pole-zero filters with guaranteed stability, and its logmagnitude domain criterion allows tuning curves with very steep slopes to be accurately modelled with an 8 to 10 order polezero filter. Thu...

Transmitter and receiver filter design plays a key role in communication systems with partial response channels. For a partial response system, a nonmaximally decimated multirate filter bank can be used as a precoder. Based on MMSE criterion, a closed-form solution to the joint transmitter-receiver optimization problem for noisy partial response channels is presented in this paper. It is found ...

Filter banks, subband/wavelets, and multiresolution decompositions that employ recursive filters have been considered previously and are recognized for their efficiency in partitioning the frequency spectrum. This paper presents an analysis of a new infinite impulse response (IIR) filter bank in which these computationally efficient filters may be changed adaptively in response to the input. Th...