HaarWavelet
可用
Haar wavelet family
HaarWavelet[]
WaveletPhi[HaarWavelet[], x]
→ Piecewise[{{1, Inequality[0, LessEqual, x, Less, 1]}}, 0]WaveletPsi[HaarWavelet[], x]
→ Piecewise[{{1, Inequality[0, LessEqual, x, Less, 1/2]}, {-1, Inequality[1/2, LessEqual, x, Less, 1]}}, 0]Plot[WaveletPhi[HaarWavelet[], x], {x, -1, 2}, Exclusions -> None]
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