Spectrogram consistency and its application to phase reconstruction

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概要

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• In this article, we derive the constraints which a set of complex numbers must verify to be a consistent STFT spectrogram, i.e., to be the STFT spectrogram of an actual real-valued signal, and describe how they lead to an objective function measuring the consistency of a set of complex numbers as a spectrogram. We then present a flexible phase reconstruction algorithm based on a local approximation of the consistency constraints and derive a real-time time-scale modification algorithm.

• 2009-07-22

著者

• JonathanLeRoux

  NTTコミュニケーション科学基礎研究所

• Hirokazu Kameoka

  NTTコミュニケーション科学基礎研究所

• Nobutaka Ono

  東京大学大学院情報理工学系研究科

• Shigeki Sagayama

  東京大学大学院情報理工学系研究科

• Ono Nobutaka

  東京大学大学院情報理工学系研究科

• Sagayama Shigeki

  東京大学大学院情報理工学系研究科

• Shigeki Sagayama

  Graduate School of Information Science and Technology, The University of Tokyo

関連論文

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