The grouping block determines the concurrent time-freque-ncy region of the desired signal using constraints (i) and (iii) in Table 1, and then reconstructs the segregated instantaneous amplitude and phase using the inverse wavelet transform [7].
and
are the reconstructed f1(t) and f2(t).
Constraint (i) is implemented by comparing the onset/offset (
)
of Xk(t) with the onset/offset (
)
of
corresponding to F0(t), where
msec and
msec [7].
Constraint (iii) is implemented by determining the channel number corresponding to the integer multiples of F0(t).