Discrete Time Fourier Transform 离散时间傅里叶变换 ; 离散时域傅立叶变换 ; 叶变换 ; 非周期性离散信号离散时域傅立叶变换
Short Time Fourier Transform 短时傅立叶变换 ; 叶变换 ; 了短时傅立叶变换 ; 短时fourier变换
Continuous-time Fourier transform 连续时间傅立叶变换
The Discrete-Time Fourier Transform 离散时间傅里叶变换
The Continuous-Time Fourier Transform 连续时间傅里叶变换
discrete short time Fourier transform 离散短时傅里叶变换 ; 再利用离散短时傅里叶变换 ; 离散短时傅氏变换
Inverse Discrete-Time fourier transform 傅立叶反变换
short-time fourier transform 短时间傅里叶变换
shout-time Fourier transform 法主要有短时傅里叶变换
real time fourier transform 实时傅里叶变换
It proved that using the Waterfall based on Short-Time Fourier Transform to analyze non-balanced signal has many advantages such as.
实践证明：用基于短时傅里叶变换的瀑布图来分析非平稳信号，具有分辨率高、特征提取结果更为精确的特点。
Results of analysing Doppler signals simulated using this method with the short time Fourier transform show agreement with the theoretical prediction.
利用短时傅里叶变换分析以这种方法合成的模拟多普勒信号，实验的结果和理论基本吻合。
After denoising, it analyzes PCG signal by Short-Time Fourier Transform (STFT). Different window-width is corresponding to different time-frequency resolution.
对去噪后的心音信号，本文进行了短时傅立叶变换，不同长度的时间窗对应了不用的时频分辨率。
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