This study investigates a band extension technique for speech data encoded with G.711, the most common codec for digital speech communications systems such as VoIP. The proposed technique employs steganography for the transmission of the side information required for the band extension based on full wave rectification. 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 evaluation, it is indicated that the proposed technique may potentially be useful for improving the speech quality, compared with the conventional technique.

Author: Aoki, Naofumi
Affiliation: Hokkaido University
AES Conference: 29th International Conference: Audio for Mobile and Handheld Devices (September 2006)
Paper Number: 5-1
Publication Date: September 1, 2006 Import into BibTeX
Subject: Audio for Mobile & Handheld Devices
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=13871

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