Multiband analysis and synthesis of spectro-temporal modulations of Fourier spectrogram

Tai-Shih Chi*, Chung Chien Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The two-dimensional spectro-temporal modulation filtering concept of the auditory model T. Chi, P. Ru, and S. A. Shamma, J. Acoust. Soc. Am. 118(2), 887-906 (2005) is implemented on the Fourier spectrogram. The Fourier magnitude spectrogram is analyzed in terms of its joint spectro-temporal modulations, which embed the temporal dynamics and spectral structures. Instead of iterative projection methods, the overlap-and-add method is adopted to invert modified Fourier spectrograms back to sounds. The proposed framework not only provides a similar spectro-temporal analytical process for sounds as the auditory model but also produces synthesized sounds with better quality in a timely manner, which makes proposed framework feasible to human speech recognition (HSR) applications as well.

Original languageEnglish
JournalJournal of the Acoustical Society of America
Volume129
Issue number5
DOIs
StatePublished - 1 May 2011

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