Content deleted Content added
m Open access bot: doi updated in citation with #oabot. |
→Examples of window functions: add a WikiLink |
||
Line 61:
*The parameter '''B''' displayed on each spectral plot is the function's [[Spectral_leakage#Noise_bandwidth|noise equivalent bandwidth]] metric, in units of ''DFT bins''.<ref name=Harris/>{{rp|p.56 eq.(16)}}
**See {{Slink|spectral leakage|Discrete-time signals|Some window metrics}} and [[Normalized_frequency_(signal_processing)|Normalized frequency]] for understanding the use of "bins" for the x-axis in these plots.
The sparse sampling of a [[discrete-time Fourier transform]] (DTFT) such as the DFTs in Fig 2 only reveals the leakage into the DFT bins from a sinusoid whose frequency is also an integer DFT bin. The unseen sidelobes reveal the leakage to expect from sinusoids at other frequencies.{{efn-la
Line 542:
where the window weights more highly the earliest samples when <math>\alpha > 1</math>, and conversely weights more highly the latest samples when <math>\alpha < 1</math>.<ref>{{cite journal |last1=Luo |first1=Jiufel |last2=Xie |first2=Zhijiang |last3=Li |first3=Xinyi |title=Asymmetric Windows and Their Application in Frequency Estimation |journal=Chongqing University |date=2015-03-02 |volume=9 |issue=Algorithms & Computational Technology |pages=389–412 |doi=10.1260/1748-3018.9.4.389 |s2cid=124464194 |doi-access=free }}</ref>
== See also ==
* [[Apodization]]
| |||