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- 通過(guò)對傳統的短時(shí)Fourier變換進(jìn)行改造,在短時(shí)Fourier變換的計算中利用自回歸(AR)譜估計代替離散Fourier變換(DFT),得到了一種基于A(yíng)R譜估計的短時(shí)AR譜分析方法.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.
- 該方法克服了SFT（短時(shí)Fourier變換）分析對高、低頻段具有相同的時(shí)間分辨率和頻率分辨率的缺點(diǎn)，彌補了小波變換只能粗糙地模擬基底膜帶通濾波器特性的不足。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變換Fourier transform
- 變換vary
- 有限Fourier變換finite Fourier transform
- 廣義Fourier變換generalized Fourier transform
- 變換的transpositional
- 氣象預報預測今天有短時(shí)雷雨大風(fēng)。The weather forecast says there will be a brief thunderstorm today.
- 變換器convertor
- Chirp-Fourier變換Chirp - Fourier transform
- Fourier變換光譜儀Fourier transform spectrometer
- 離散分數Fourier變換discrete fractional Fourier transform
- 變換群transformation group
- Ｚ變換Z-transform
- ＫＬ－變換KL-transform
- Ｚ反變換inverse Z-transform
- 阿貝爾變換Abelian transformation
- 阿達瑪變換Hadamard transform
- 正則變換canonical transformation
- 模式變換器mode converter
