A low bit rate speech coder optimized for forward error control
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چکیده
As digital speech transmission technology becomes more widespread. the trend is to find robust and low complexity bandwidth-eflicient algorithms for speech coding. As forerunners in this area. the LPC based schemes like MPLPC [1]. RPE [2]. CELP [3]. etc and recently. CELP-BB [4]. have been extensively reported. With its reasonable complexity and high quality speech at low bit rates (2.4 to 4.8Kb/s). CELP-BB is a good contender for 4.8Kb/s and below. Although all these schemes have good operation in ideal conditions. they cannot function properly under real channel conditions because of the less than ideal nature of most communication channels.
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تاریخ انتشار 1989