Based on above analysis, this thesis brings forward the usage of digital filter, which uses the distributed FIR to get excellent linear feature. By the means of search table,multiplicative tool is seldom used and resource is optimized.
基于以上分析,本文首先设计了具有良好线性特性的数字滤波器,通过改进的分布式多查找表方式,减少了乘法器的使用,优化了资源。
参考来源 - 基于FPGA的音频处理系统·2,447,543篇论文数据，部分数据来源于NoteExpress
On the basis of analyzing variable step size adaptive filtering algorithm, adopted RAM search table to implement fast convolution in the filter operation.
在分析了变步长自适应滤波算法的基础上，采用基于RAM的查找表来实现滤波运算中的快速卷积。
Carries on the optimization to the H. 263 quantification technology, a intra-frame quantification search table that can avoid the division operation is constructed.
263量化技术也进行了优化，构造出一个可以避免除法运算的帧内量化查找表。
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