Efficient coding of LSP parameters using Compressed Sensing on Approximate KLT Domain

• Autorzy: Xiao Q. , Chen L. , Zhu T. , Wang Y.

Warianty tytułu

PL

Skuteczne kodowanie parametru LSP przy użyciu metody Compressed Sensing

• Języki publikacji: EN

Abstrakty

EN

An efficient LSP parameters quantization scheme is proposed using the compressed sensing (CS). The LSP parameters extracted from consecutive speech frames are compressed by CS on the approximate KLT domain to produce a measurement vector, which is quantized using the split vector quantizer. Then, from the quantized measurements, the original LSP parameters are reconstructed by the orthogonal matching pursuit method. Experiments show that the scheme can obtain "transparent quality" at 5 bits/frame with drastic bits reduction compared to other methods.

PL

Zaproponowano kwantyzację parametru LSP (Linear prediction coefficient) przy użyciu metody compressed sensing CS. Oryginalna wartośc LSP może być zrekonstruowana przy zastosowaniu metody ortogonalnego dopasowania. Uzyskano dobrą jakość ramki 5 bitów/ramka ze znacząca redukcją bitów w porównaniu z innymi metodami.

Słowa kluczowe

EN

speech coding; line spectrum pair; compressed sensing; Karhunen-Loeve Transform; KLT; electrical technology

PL

kodowanie mowy; metoda Compressed Sensing; elektrotechnika

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2011
• Tom: R. 87, nr 7
• Strony: 230--234
• Opis fizyczny: Bibliogr. 18 poz., rys., tab., wykr.

Twórcy

autor

Xiao Q.

autor

Chen L.

autor

Zhu T.

autor

Wang Y.

• Institute of Communications Engineering, PLA Univ. of Sci. & Tech.,

Bibliografia

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