Title :
Warped linear predictive audio coding in video conferencing application
Author :
Palomaki, Kalle ; Harma, Akt ; Laine, Unto K.
Author_Institution :
Lab. of Acoust. & Audio Signal Process., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
A codec for wideband 12kHz speech and audio in a video conferencing application is proposed in this paper. The codec is based on warped linear predictive coding algorithm which utilizes the auditory Bark frequency resolution. The structure of the codec is described and the main issues on the real-time implementation are discussed. The codec is integrated to a video conferencing product which is a video codec PC-board. The algorithm is implemented in a Texas TMSC31 digital signal processor.
Keywords :
audio coding; digital signal processing chips; linear codes; teleconferencing; video codecs; video communication; Texas TMSC31 digital signal processor; auditory Bark frequency resolution; codec structure; frequency 12 kHz; video codec PC-board; video conferencing application; video conferencing product; warped linear predictive audio coding algorithm; wideband audio; wideband speech; Audio coding; Bandwidth; Codecs; Quantization (signal); Speech; Speech coding;
Conference_Titel :
Signal Processing Conference (EUSIPCO 1998), 9th European
Conference_Location :
Rhodes
Print_ISBN :
978-960-7620-06-4
