A new method to represent speech signals via predefined signature and envelope sequences

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Tarih

2007

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Yayıncı

Hindawi Publishing Corporation

Erişim Hakkı

info:eu-repo/semantics/openAccess

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Özet

A novel systematic procedure referred to as "SYMPES" to model speech signals is introduced. The structure of SYMPES is based on the creation of the so-called predefined "signature S = {S(R)(n)} and envelope E = {E(K) (n)}" sets. These sets are speaker and language independent. Once the speech signals are divided into frames with selected lengths, then each frame sequence X(i)( n) is reconstructed by means of the mathematical form X(i)( n) = C(i)E(K) (n) S(R)(n). In this representation, C(i) is called the gain factor, S(R)(n) and E(K) (n) are properly assigned from the predefined signature and envelope sets, respectively. Examples are given to exhibit the implementation of SYMPES. It is shown that for the same compression ratio or better, SYMPES yields considerably better speech quality over the commercially available coders such as G. 726 (ADPCM) at 16 kbps and voice excited LPC-10E (FS1015) at 2.4 kbps.

Açıklama

Anahtar Kelimeler

Electrocardiography, Data compression, Signal compression, Code converters, Image compression, Mathematical models, Numerical methods, Compression ratio, Gain factors, Speech quality, Speech signals, Speech processing

Kaynak

EURASIP Journal on Advances in Signal Processing

WoS Q Değeri

Q2
Q2

Scopus Q Değeri

Q2

Cilt

2007

Sayı

Künye

Güz, Ü., Gürkan, H. & Yarman, B. S. B. (2007). A new method to represent speech signals via predefined signature and envelope sequences. Eurasip Journal on Advances in Signal Processing, 2007, 1-17. doi:10.1155/2007/56382