نتایج جستجو برای: impulse response fir filters
تعداد نتایج: 1034079 فیلتر نتایج به سال:
This paper introduces filter structures for interpolation and decimation by a factor of two. The structures are derived by using the frequency-response masking approach, in which the overall filter makes use of a periodic model filter, its complementary filter, and two masking filters. The periodic model filters are obtained by replacing each delay element in a model filter with M delay element...
Multiple constant multiplication scheme is the most effective common sub expression sharing technique which is used for implementing the transposed FIR filters. Ripple carry operation allows adder tree to minimize hardware cost, unfortunately it detriment timing and gives low speed operation. To outperform this high speed adder is proposed and analyzed for real time speech signal applications. ...
Multiple Constant Multiplications (MCM) are widely used for implementing transpose form pipelined Finite Impulse Response (FIR) filters. In biomedical applications like Electro Cardio Gram (ECG) the coefficients of FIR filters remain fixed. In these applications, Full flexibility of a multiplier is not necessary. Once the MCM method is implemented, it can be called as many times if needed. Tran...
A new technique for the design of finite impulse response (FIR) filters for decimation and interpolation in multi rate systems is presented. With this technique, FIR preand postfilters that jointly minimize a frequency-weighted mean-square (MS) error between the original and reconstructed signals can be designed. Unlike most other FIR filter design methods, there is no need for ideal filter pro...
This study presents an architectural approach to the design of Low Area and high speed linear phase Finite Impulse Response (FIR) digital filter. FIR digital filters are used in DSP by the virtue of its, linear phase, fewer finite precision error, stability and efficient implementation. In the proposed architecture, we are introduced five parallel linear phase fir filter to obtain the high spee...
Finite impulse response filter holds important part in DSP designs. Multi-rate FIR filters specially are the integral part of the various DSP applications like speech coding, audio compression, image processing and others. In VLSI designs, especially nowadays, in SOC designs, requires efficient implementation of FIR filter. Fixed point FIR filter design is the challenging task in ASIC designs. ...
An analysis of the three possible types of quantization effects in the direct form realization of finite impulse response (FIR) digital filters i s presented. These quantization effects include roundoff noise, A-D noise, and fiiter frequency response errors due to coefficient quantization. Since the
A new family of multidimensional dimensional (MD) perfect reconstruction (PR) two channel filter banks with finite impulse response (FIR) filters induced from systems of biorthogonal MD scaling functions and wavelets are introduced. One of the advantages of this construction is that the biorthogonal scaling functions and wavelets are easy to establish due to the interpolatory property of the sc...
This paper presents the methodology for the design of Low pass FIR digital filter using hybrid Differential Evolution (DE) method. It is an evolutionary algorithm that exhibits the features of both the basic DE and HookeJeeves exploratory move to attain the optimal solution. The basic DE and exploratory move have the capability to exploit and explore the search space to design the optimal filte...
A powerful genetic algorithm (GA) approach is proposed to determine the optimal coefficients of McClellan transformation. It can be used to design any arbitrary shape transformation contours to map from one-dimensional (1-D) prototypes to two-dimensional (2-D) finite-duration impulse response (FIR) filters very effectively. Certain conditions are composed such that the scaling of the transforma...
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