Design of A Generic CELP Architecture
Savita Madhusudhan, Sushrant Monga, Stgs Ramakrishna, H. S. Jamadagni, Ashok Rao · NOT FOUND REPOSITORY (Indian Institute of Science Bangalore) · 2002
Modern mobile communications require optimum bandwidth utilization with minimum loss, delay and good quality of speech transmission. This triggered the usage of low bit rate voice Codecs among which CELP Codecs inherit the merits of both Waveform and Source codecs, like toll quality, low bit rate etc. In this paper an attempt has been made to form some special generic hardware blocks for the ITU G.729 standard (CS-ACELP, Conjugate Structure Algebraic Code Excited Linear Prediction) of 8Kbps bit rate CELP algorithm. This is aimed at overcoming the limitation of computational burden and also scaling this application for enhanced speed and extracting more number of channels.