Design of Digital Filter Structures and Quantization Analysis
Date Issued
2007
Date
2007
Author(s)
Chen, Mei-Dai
DOI
en-US
Abstract
A family of digital parametric equalizers based on high-order Butterworth, Chebyshev type I, Chebyshev type II, and elliptic analog prototype filter was proposed in [16]. Compared to the conventional biquadratic equalizers, such equalizers can have flatter passband and sharper band edges at the expense of higher computational cost.
Here, we will review this kind of equalizer, and realize it by several of structures, such as transposed, ladder and lattice, normalized lattice, state space, and decoupled. The transfer function of this high-order parametric equalizer is first derived in cascade form, and we will derive it in parallel form to observe the effects between the cascade and the parallel form. Then we also set the coefficients of the realization structures to be quantized with the finite word length so that we can observe how the performances are affected by quantization errors.
Subjects
串聯
頻率轉換函數
並聯
有限長字元長度
量化
digital parametric equalizers
cascade form
parallel form
finite word length
quantization
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-96-R94942049-1.pdf
Size
23.31 KB
Format
Adobe PDF
Checksum
(MD5):08e9fa67ab8e68a280e7ca3041f8d3b2