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Title: Estimating the Spectral Envelope of Voiced Speech Using Multi-Frame Analysis
Authors: Shiga, Yoshinori
King, Simon
Issue Date: 2003
Citation: Shiga, Yoshinori / King, Simon (2003): "Estimating the spectral envelope of voiced speech using multi-frame analysis", In EUROSPEECH-2003, 1737-1740.
Publisher: International Speech Communication Association
Abstract: This paper proposes a novel approach for estimating the spectral envelope of voiced speech independently of its harmonic structure. Because of the quasi-periodicity of voiced speech, its spectrum indicates harmonic structure and only has energy at frequencies corresponding to integral multiples of F_0. It is hence impossible to identify transfer characteristics between the adjacent harmonics. In order to resolve this problem, Multi-frame Analysis (MFA) is introduced. The MFA estimates a spectral envelope using many portions of speech which are vocalised using the same vocal-tract shape. Since each of the portions usually has a different F_0 and ensuing different harmonic structure, a number of harmonics can be obtained at various frequencies to form a spectral envelope. The method thereby gives a closer approximation to the vocal-tract transfer function.
Keywords: speech
Multi-frame Analysis
URI: http://www.isca-speech.org/archive/eurospeech_2003/index.html
http://hdl.handle.net/1842/1077
Appears in Collections:CSTR publications
Linguistics and English Language publications

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