火海
发表于 2025-3-23 13:17:20
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吞噬
发表于 2025-3-23 13:59:55
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临时抱佛脚
发表于 2025-3-23 21:11:27
Shlomo EngelbergGives the reader an understanding of the mathematical principles and theories that underlie digital signal processing.Enables the reader to cover the essentials without requiring 700+ pages.Guides the
ticlopidine
发表于 2025-3-24 01:00:57
Signals and Communication Technologyhttp://image.papertrans.cn/d/image/279671.jpg
MODE
发表于 2025-3-24 04:30:16
Time-limited Functions Are Not Band-limitedctly supported—if it is zero outside of some bounded region—then its Fourier transform cannot be compactly supported. Then we show that the “narrower” a function is in the time domain, the more spread out it will be in the frequency domain (and .).
不足的东西
发表于 2025-3-24 08:31:26
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Inertia
发表于 2025-3-24 11:36:16
Windowing. This “truncation” of the signal changes the Fourier transform—the spectrum—of the signal. In this chapter, we learn about .; we learn how to control the effect that truncation has on a signal’s spectrum.
改正
发表于 2025-3-24 16:16:21
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CAMEO
发表于 2025-3-24 19:19:18
The General Structure of Sampled-data Systemssis of discrete-time signals as in Part I or to implement digital filters as in Part III—one must sample an analog signal, and often one must convert digitized samples of a signal back into an analog signal. Understanding how these conversions are made is the purpose of this part of the book—of Part II.
不真
发表于 2025-3-25 01:44:01
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