A study on computing method of generalized harmonic analysis and parameter settings

摘要

The generalized harmonic analysis (GHA) has more accuracies than the FFT in the frequency which period is shorter than the frame length. Therefore it is available for the signal which spectrums are close each other. It is a problem, however, that GHA needs a large amount of calculation. In this report, the result of FFT is used to decide the frequency band which GHA should be adopted strictly, and reduce the computation time. Furthermore, the some parameters in the computation of GHA are considered in the case of musical sound.