As importance of the phase of complex spectrogram has been recognized widely, many techniques have been proposed for handling it. However, several definitions and terminologies for the same concept can be found in the literature, which has confused beginners. In this paper, two major definitions of the short-time Fourier transform and their phase conventions are summarized to alleviate such complication. A phase-aware signal-processing scheme based on phase conversion is also introduced with a set of executable MATLAB functions (https://doi.org/10/c3qb).
- Discrete Gabor transform (DGT)
- Instantaneous frequency
- Phase conventions
- Phase-aware signal processing
- Short-time Fourier transform (STFT)
ASJC Scopus subject areas
- Acoustics and Ultrasonics