一种替代方法线性卷使用离散正弦积余弦变换 d ,出版 in V. G. Reju, S. N. Koh and I. Y.很快，"卷积使用离散正弦和余弦变换，" IEEE 信号处理信件、 卷14、 2007 年 7 月，第 7 页 445–448。（第二跻身前访问文档从 》 杂志 2007 年 7 月）。
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