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A realization of FIR filters with simultaneously variable bandwidth and fractional delay
- Publication Year :
- 2012
-
Abstract
- This paper introduces a realization of finite-length impulse response (FIR) filters with simultaneously variable bandwidth and fractional delay (FD). The realization makes use of impulse responses which are two-dimensional polynomials in the bandwidth and FD parameters. Unlike previous polynomial-based realizations, it utilizes the fact that a variable FD filter is typically much less complex than a variable-bandwidth filter. By separating the corresponding subfilters in the overall realization, significant savings are thereby achieved. A design example, included in the paper, shows about 65 percent multiplication and addition savings compared to the previous polynomial-based realizations. Moreover, compared to a recently introduced alternative fast filter bank approach, the proposed method offers significantly smaller group delays and group delay errors.
Details
- Database :
- OAIster
- Notes :
- Johansson, HaĚŠkan, Eghbali, Amir
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1233701444
- Document Type :
- Electronic Resource