Representation of complex spectrogram via phase conversion

Kohei Yatabe, Yoshiki Masuyama, Tsubasa Kusano, Yasuhiro Oikawa

Research output: Contribution to journalReview articlepeer-review

23 Citations (Scopus)


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 (

Original languageEnglish
Pages (from-to)170-177
Number of pages8
JournalAcoustical Science and Technology
Issue number3
Publication statusPublished - 2019


  • Discrete Gabor transform (DGT)
  • Instantaneous frequency
  • Phase conventions
  • Phase-aware signal processing
  • Short-time Fourier transform (STFT)

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


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