A Band Extension Technique for G.711 Speech Based on Full Wave Rectification and Steganography
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.
Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members, $5 for AES members and is free for E-Library subscribers.