摘要
本文提出了将待卷积两序列均进行分段的两种分段卷积新方法,使运算等待(运算辅助)时间和运算周期减小为原值的几分之一,从而大大减小(输出)延迟——尽快开始输出过滤点,也使整个处理时间大大缩短;能大大节省存储空间。上述时间和空间利用上的高效率,对于长冲激响应(高阶)滤波器过滤长信号尤显突出。此外,不再有原重叠保留法的方法性截尾误差。
The two new methods presented in this paper is primarily concerned with a new procedure for computation of two sequences, both are scgmented. For long signal and long unit-impulse response filter (high-order filter), they will reduce the waiting time grea-tly, so that the fikered points will be quickly obtained and total operating time will be saved. Furthermore, they can also save the memory space. So the new methods have the ad-vantage of higher efficiency. Compared with using the traditional overlap-save method, the processing error due to cutting tail will no longer exist by using the new methods.
关键词
信息处理
分段卷积
卷积运算
Signal processing
Convolution computation
Segmentation convolution
lmpulse response
