Phases of modified Stockwell transforms and instantaneous frequencies
Qiang Guo, Shahla Molahajloo, Man Wah Wong · Journal of Mathematical Physics · 2010
The phase of a signal is analyzed using the Stockwell transform. In particular, the relationships between the instantaneous frequencies of a signal in polar form and the phase of the corresponding Stockwell transform are given. The corresponding results using a reciprocal Morlet wavelet transform are given for comparisons.