广义时频表示的一种实时实现方法

本文研究了时频表示的实时实现算法及其算法优化问题，从广义局域自相关函数的物理意义出发，论证了广义时频表示的实时计算采用短时处理技术的可行性，并从两处着眼优化了算法，一得利用核函数共轭对称性，使时频表示的计算复杂度降低一半多；二是在计算解析信号过程中，给出了以任意帧移间隔的时域递推算法，进一步减少了实时算法的计算量。

An Algorithm for Real-Time Implementation of Generalized Time-Frequency Representations

This paper studied on real-time computation of generalized time-frequency representations (GTFRs )and its optimizing. From the conception of generalized local autocorrelation,we discuss the problem that real-time computation of GTFRs can be performed by means of short time processing. Furthermore,this paper proposes an algorithm optimized in such two aspects as: (1) reducing the computational complexity more than twice by taking advantage of conjugated symmetry of the kernel function for some GTFRs ; (2) deducing a time domain recursive algorithm for the computation of analytic signals accurately with any frame shift interval.