کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
567188 876055 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Calculation of radix-2 discrete multiresolution Fourier transform
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
Calculation of radix-2 discrete multiresolution Fourier transform
چکیده انگلیسی

This article discusses the efficient calculation of radix-2 multiresolution Fourier transform (MFT), which can also be regarded as a collection of short-time Fourier transforms (STFTs) with multiple 2-based window sizes, calculated on the same discrete-time signal. We show that by reconfiguring the (decimation-in-frequency)-fast Fourier transform (DIF-FFT) framework to adopt different internal calculations, we are able to save nearly 50% of the calculation compared with a direct DIF-FFT method. Practical issues on real signals, sliding windows and cosine-family windowing are also discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing - Volume 87, Issue 10, October 2007, Pages 2455–2460
نویسندگان
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