Note 1 to entry: For a function $f(t)$ and a wavelet $\psi (t)$:

$C_f(a,b)={\displaystyle {\int }_{-\infty }^{+\infty }f(t)}{\psi }_{a,b}^{\ast }(t)\mathrm{d}t$

where a is the scale parameter, b is the position parameter, and * denotes the complex conjugate.

Note 2 to entry: A discrete wavelet transform is obtained by choosing a finite number of values of the two parameters. The inverse transform expresses the function of time as a superposition of wavelets.