AES E-Library

Embedded Speech Codec Based on Speex

Embedded speech coding technique is of interest for many applications like VoIP, Multimedia Broadcasting, Video Conferencing. We propose a CELP based embedded speech codec that is operable for both narrowband and wideband speech signals. Our three-layered embedded codec offers three bit-rates. This embedded codec is based on Speex codec. In our embedded speech codec, innovation vectors of the higher layers are embedded in the innovation vector of the lowest layer. All speech coding parameters but innovation vector are shared between lowest layer and higher layers. In our algorithm, higher bit rates are rewarded with better quality penalizing the lowest bit rate.

Authors: Kamaruzzaman, Md.; Taddei, Herve
Affiliation: Siemens AG ICM MP, Munich, Germany
AES Convention:116 (May 2004) Paper Number:6173 Import into BibTeX
Subject:Low Bit-Rate Audio Coding

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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 116Papers)   /116/6173.pdf

Start a discussion about this paper!