Reassignment method
The method of reassignment is a technique forsharpening a time-frequency representation by mappingthe data to time-frequency coordinates that are nearer tothe true region of support of theanalyzed signal. The method has been independentlyintroduced by several parties under various names, includingmethod of reassignment, remapping, time-frequency reassignment, and modified moving-window method. Inthe case of the spectrogram or the short-time Fourier transform, the method of reassignment sharpens blurrytime-frequency data by relocating the data according tolocal estimates of instantaneous frequency and group delay.This mapping to reassigned time-frequency coordinates isvery precise for signals that are separable in time andfrequency with respect to the analysis window.
- Comment
- enThe method of reassignment is a technique forsharpening a time-frequency representation by mappingthe data to time-frequency coordinates that are nearer tothe true region of support of theanalyzed signal. The method has been independentlyintroduced by several parties under various names, includingmethod of reassignment, remapping, time-frequency reassignment, and modified moving-window method. Inthe case of the spectrogram or the short-time Fourier transform, the method of reassignment sharpens blurrytime-frequency data by relocating the data according tolocal estimates of instantaneous frequency and group delay.This mapping to reassigned time-frequency coordinates isvery precise for signals that are separable in time andfrequency with respect to the analysis window.
- Date
- 18 November 2019
- Depiction
- Has abstract
- enThe method of reassignment is a technique forsharpening a time-frequency representation by mappingthe data to time-frequency coordinates that are nearer tothe true region of support of theanalyzed signal. The method has been independentlyintroduced by several parties under various names, includingmethod of reassignment, remapping, time-frequency reassignment, and modified moving-window method. Inthe case of the spectrogram or the short-time Fourier transform, the method of reassignment sharpens blurrytime-frequency data by relocating the data according tolocal estimates of instantaneous frequency and group delay.This mapping to reassigned time-frequency coordinates isvery precise for signals that are separable in time andfrequency with respect to the analysis window.
- Hypernym
- Technique
- Is primary topic of
- Reassignment method
- Label
- enReassignment method
- Link from a Wikipage to an external page
- pnas.org/content/103/16/6094.long
- tftb.nongnu.org/
- www.cerlsoundgroup.org/Loris/
- www.klingbeil.com/spear/
- musicalgorithms.ewu.edu/algorithms/roughness.html
- web.archive.org/web/20191118182132/http:/musicalgorithms.ewu.edu/algorithms/Roughness.html
- Link from a Wikipage to another Wikipage
- Category:Time–frequency analysis
- Category:Transforms
- Cohen's class
- Cohen's class distribution function
- File:Long-window reassigned spectrogram of speech.png
- File:Reassigned spectrogral surface of bass pluck.png
- File:Short-window reassigned spectrogram of speech.png
- Short-time Fourier transform
- Spectrogram
- Stationary phase approximation
- Support (mathematics)
- Time-frequency representation
- Wigner–Ville distribution
- SameAs
- 4tvJv
- m.02qmnmn
- Q7301549
- 重新分布法
- Subject
- Category:Time–frequency analysis
- Category:Transforms
- Thumbnail
- Url
- Roughness.html
- WasDerivedFrom
- Reassignment method?oldid=1117507678&ns=0
- WikiPageLength
- 22909
- Wikipage page ID
- 10701883
- Wikipage revision ID
- 1117507678
- WikiPageUsesTemplate
- Template:Clear
- Template:Compression methods
- Template:Main
- Template:Webarchive
