Details

Autor(en) / Beteiligte

• Okada, A.
• Ono, N.
• Ando, S.

Titel

Representation of fine structure of speech signals using time-frequency zeros

Ist Teil von

• SICE 2004 Annual Conference, 2004, Vol.3, p.2357-2360 vol. 3

Ort / Verlag

Tokyo: IEEE

Erscheinungsjahr

2004

Link zum Volltext

• IEEE_Xplore

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

• In this paper, we propose a novel time-frequency analysis method for speech, which consists of 1) subband decomposition by the holomorphic filterbank proposed by us, and 2) detection of time-frequency zeros. By theoretical analysis and experiments, we show that 1) voiced speech generates a stable two-dimensional (2-D) maps of zeros which are different vowels by vowels, 2) it represents pitch structure, formant structure, and glottal excitation instance, which are important for analyzing voiced speech in frequency and time domain.