연속 웨이블릿 변환

1차원 및 2차원 CWT, 1차원 역 CWT, 1차원 CWT 필터 뱅크, 웨이블릿 상호 스펙트럼 및 코히어런스

신호 또는 영상의 CWT(연속 웨이블릿 변환)를 얻고, 역 CWT로 신호 근사 성분을 생성하고, 웨이블릿 코히어런스를 사용하여 두 신호의 시변 패턴을 비교하고, 웨이블릿 대역통과 필터를 시각화하고, 웨이블릿 싱크로스퀴징을 사용하여 고분해능 시간-주파수 표현을 얻습니다.

함수

모두 확장

1차원 분석

`cwt`	연속 1차원 웨이블릿 변환
`icwt`	Inverse continuous 1-D wavelet transform
`cwtfilterbank`	Continuous wavelet transform filter bank
`wt`	Continuous wavelet transform with filter bank
`freqz`	CWT filter bank frequency responses
`timeSpectrum`	Time-averaged wavelet spectrum (R2020b 이후)
`scaleSpectrum`	Scale-averaged wavelet spectrum (R2020b 이후)
`cwtfreqbounds`	CWT maximum and minimum frequency or period
`wcoherence`	Wavelet coherence and cross-spectrum
`wsst`	Wavelet synchrosqueezed transform
`iwsst`	Inverse wavelet synchrosqueezed transform
`wsstridge`	Time-frequency ridges from wavelet synchrosqueezing
`wtmm`	Wavelet transform modulus maxima

2차원 분석

`cwtft2`	2-D continuous wavelet transform
`cwtftinfo2`	Supported 2-D CWT wavelets and Fourier transforms

앱

웨이블릿 시간-주파수 분석기

신호의 스케일로그램 시각화 (R2022a 이후)

도움말 항목

1차원 CWT 분석 및 합성

연속 웨이블릿 분석
연속 웨이블릿 변환을 사용하여 시간-주파수 분석을 수행합니다.
Continuous Wavelet Analysis of Modulated Signals
This example shows how to use the continuous wavelet transform (CWT) to analyze modulated signals.
Continuous Wavelet Analysis of Cusp Signal
Understand the differences between wavelet transform modulus maxima and the CWT of a cusp signal.
Inverse Continuous Wavelet Transform
Understand the mathematics of the inverse continuous wavelet transform.
Boundary Effects and the Cone of Influence
Learn about the cone of influence and how it represents regions of significant boundary effects.
Morse Wavelets
Learn about the generalized Morse family of analytic wavelets.

2차원 CWT 분석

Two-Dimensional CWT of Noisy Pattern
This example shows how to detect a pattern in a noisy image using the 2-D continuous wavelet transform (CWT).
2-D Continuous Wavelet Transform
Learn about the 2-D Continuous Wavelet Transform.

웨이블릿 계수, 스케일 및 싱크로스퀴징

Continuous Wavelet Transform and Scale-Based Analysis
Learn about the continuous wavelet transform and the relationship between frequencies and scales.
Continuous Wavelet Transform as a Bandpass Filter
Understand the continuous wavelet transform as bandpass filtering.
Wavelet Synchrosqueezing
Time-frequency reassignment technique for analyzing signals with oscillating modes.