一种16kb /s的自适应后滤波APC系统及其性能评价

ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1988-04-11 DOI:10.1109/ICASSP.1988.196664

D. J. Zarkadis, B. Evans

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引用次数: 1

摘要

提出了一种具有反向自适应短期预测器的自适应预测编码器(APC)，其工作速度为16kb /s。在解码器的输出端采用自适应后滤波。对固定和切换后滤波程度的编码器的性能进行了客观和主观的评价。基于主观测试方法的刺激-反应模型，编码器的性能用q等价值表示

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A 16 kb/s APC system with adaptive postfilter and evaluation of its performance

An adaptive predictive coder (APC) with backward adaptive short-term predictor is presented for operation at 16 kb/s. Adaptive postfiltering is applied in the output of the decoder. The performance of the coder is evaluated both objectively and subjectively for fixed and switched degrees of postfiltering. Based on a stimulus-response model for the subjective testing method the performance of the coder is expressed in terms of Q-equivalent values.<>

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ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing

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