Bandingkan kaedah

	Transformasi Gelombang Diskrit	Transformasi wavelet diskret dengan tindanan maksimum (MODWT)
Bidang	Siri Masa	Siri Masa
Keluarga	Process / pipeline	Process / pipeline
Tahun asal	1992	1995
Pengasas	Ingrid Daubechies	Donald B. Percival
Jenis	Hierarchical signal decomposition	Non-decimated multiresolution decomposition
Sumber perintis	Daubechies, I. (1992). Ten Lectures on Wavelets. SIAM.	Percival, D. B., & Walden, A. T. (1995). Wavelet Methods for Time Series Analysis. Cambridge University Press.
Alias	DWT, Daubechies wavelets, Haar wavelet	MODWT, Stationary wavelet transform, Undecimated DWT
Berkaitan	1	2
Ringkasan	The discrete wavelet transform (DWT) is a fast, computationally efficient method for decomposing signals into different frequency and time components using orthogonal or biorthogonal wavelet functions. Developed rigorously by Ingrid Daubechies (1992) and built on Mallat's multiresolution decomposition theory (1989), the DWT employs filter banks to recursively split a signal into approximation (low-frequency) and detail (high-frequency) components. It has become the foundation for signal processing applications ranging from compression to feature extraction.	The maximal overlap discrete wavelet transform (MODWT) is a translation-invariant wavelet decomposition method that addresses a key limitation of the standard DWT: lack of shift invariance. Introduced by Percival and Walden (1995), MODWT applies the same wavelet filters at each scale without downsampling, producing an undecimated decomposition. Each detail and approximation coefficient array maintains the full length of the input signal, enabling both robust multi-scale analysis and translation-invariant feature extraction.