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- 通过对传统的短时Fourier变换进行改造,在短时Fourier变换的计算中利用自回归(AR)谱估计代替离散Fourier变换(DFT),得到了一种基于AR谱估计的短时AR谱分析方法.In the calculation of STFT, discrete Fourier transform (DFT) is replaced by autoregressive (AR) spectrum estimation, and a new method based on AR spectrum estimation is gained, namely short-time AR spectrum analysis.
- 该方法克服了SFT（短时Fourier变换）分析对高、低频段具有相同的时间分辨率和频率分辨率的缺点，弥补了小波变换只能粗糙地模拟基底膜带通滤波器特性的不足。The time frequency analysis remedies the defect that short Fourier translation (SFT) has the same time resolution and frequency resolution to different frequency ranges.
- Fourier变换Fourier transform
- 变换vary
- 有限Fourier变换finite Fourier transform
- 广义Fourier变换generalized Fourier transform
- 变换的transpositional
- 气象预报预测今天有短时雷雨大风。The weather forecast says there will be a brief thunderstorm today.
- 变换器convertor
- Chirp-Fourier变换Chirp - Fourier transform
- Fourier变换光谱仪Fourier transform spectrometer
- 离散分数Fourier变换discrete fractional Fourier transform
- 变换群transformation group
- Ｚ变换Z-transform
- ＫＬ－变换KL-transform
- Ｚ反变换inverse Z-transform
- 阿贝尔变换Abelian transformation
- 阿达玛变换Hadamard transform
- 正则变换canonical transformation
- 模式变换器mode converter
