Nonstationary waveform analysis and synthesis using generalized harmonic analysis

Nonstationary waveform analysis and synthesis using generalized harmonic analysis
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使用广义谐波分析进行非平稳波形分析和合成

DOI：
10.1109/tfsa.1994.467323
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发表时间：
1994
期刊：
Proceedings of IEEE-SP International Symposium on Time- Frequency and Time-Scale Analysis
影响因子：
--
通讯作者：
Y. Hirata
Y. Hirata
中科院分区：
--
文献类型：
--
作者：
T. Terada;H. Nakajima;M. Tohyama;Y. Hirata

文献摘要

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本文提出了一种新的非平稳信号谱分析方法--广义谐波分析法。短时傅立叶变换在频谱分析中存在截断效应，而基于概周期函数的广义近似分析可以消除截断效应。我们已经应用GHA的非平稳信号，如钢琴音和歌声，并发现随时间变化的频谱，以及音高，可以可视化与高频率分辨率。&lt;<ETX>&gt;
This article presents a new method of spectrum analysis for nonstationary signals, the generalized harmonic analysis (GHA) method. The short-time Fourier transform suffers from truncation effects in spectrum analysis; however, GHA using almost-periodic functions can analyze and synthesize signals without the truncation effects. We have applied GHA to nonstationary signals, such as a piano tone and a singing voice, and found that the time-varying spectra, as well as the pitch, can be visualized with high frequency resolution.<<ETX>>