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A Band Extension Technique for G.711 Speech Using Steganography
Naofumi AOKI
Publication
IEICE TRANSACTIONS on Communications
Vol.E89-B
No.6
pp.1896-1898 Publication Date: 2006/06/01 Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.6.1896 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Network Keyword: speech enhancement, band extension, narrow-band speech, wide-band speech, steganography,
Full Text: PDF(600.7KB)>>
Summary:
This study investigates a band extension technique for speech data encoded with G.711, the most common codec for digital speech communications system such as VoIP. The proposed technique employs steganography for the transmission of the side information required for the band extension. Due to the steganography, the proposed technique is able to enhance the speech quality without an increase of the amount of data transmission. From the results of a subjective experiment, it is indicated that the proposed technique may potentially be useful for improving the speech quality, compared with the conventional technique.
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