เปรียบเทียบวิธี

	การแปลงเวฟเลตแบบไม่ต่อเนื่อง	ความสอดคล้องของเวฟเล็ต
สาขาวิชา	อนุกรมเวลา	อนุกรมเวลา
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1992	1999
ผู้ริเริ่ม	Ingrid Daubechies	Christopher Torrence
ประเภท	Hierarchical signal decomposition	Multi-scale correlation and phase
แหล่งต้นตำรับ	Daubechies, I. (1992). Ten Lectures on Wavelets. SIAM.	Torrence, C., & Webster, P. J. (1999). Interdecadal changes in the ENSO–monsoon system. Journal of Climate, 12(8), 2679–2690.
ชื่อเรียกอื่น	DWT, Daubechies wavelets, Haar wavelet	WTC, Wavelet coherency, Continuous wavelet coherence
ที่เกี่ยวข้อง	1	1
สรุป	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.	Wavelet coherence (WTC) is a normalized measure of correlation between two time series in the time-frequency domain, eliminating the amplitude-dependence of the raw cross-wavelet transform. Introduced by Torrence and Webster (1999) and formalized by Grinsted, Moore, and Jevrejeva (2004), WTC quantifies how tightly two signals are coupled at each time-frequency point, independent of their individual power levels. It is the wavelet analog of classical spectral coherence, revealing time-localized relationships across all frequencies.