时频分析
Signal Processing Toolbox™ 提供的函数和 App 可用于可视化和比较非平稳信号的时频内容。计算短时傅里叶变换及其逆变换。使用重排或傅里叶同步压缩获得清晰的频谱估计。绘制交叉频谱图、维格纳-维尔分布和持久频谱。提取并跟踪时频脊。估计瞬时频率、瞬时带宽、谱峭度和谱熵。使用经验或变分模态分解和希尔伯特-黄变换执行数据自适应时频分析。使用 Wavelet Toolbox™ 提供的函数和 App 探索其他时频表示和分析方法。
App
函数
主题
- Spectrogram Computation with Signal Processing Toolbox
Compute and display spectrograms of signals using Signal Processing Toolbox functions.
- Time-Frequency Gallery
Examine the features and limitations of the time-frequency analysis functions provided by Signal Processing Toolbox.
- Practical Introduction to Time-Frequency Analysis Using the Continuous Wavelet Transform (Wavelet Toolbox)
Perform and interpret time-frequency analysis of signals using the continuous wavelet transform.
- Practical Introduction to Multiresolution Analysis (Wavelet Toolbox)
Perform and interpret basic signal multiresolution analysis (MRA).
- Wavelet Packet Harmonic Interference Removal (Wavelet Toolbox)
Use wavelet packets to remove harmonic interference from an electrocardiogram (ECG) signal.
- Pedestrian and Bicyclist Classification Using Deep Learning (Radar Toolbox)
Classify pedestrians and bicyclists based on their micro-Doppler characteristics using deep learning and time-frequency analysis.
- Radar and Communications Waveform Classification Using Deep Learning (Phased Array System Toolbox)
Classify radar and communications waveforms using the Wigner-Ville distribution (WVD) and a deep convolutional neural network (CNN).
- Spectral Descriptors (Audio Toolbox)
Overview and applications of spectral descriptors.
相关信息
- Time-Frequency Analysis (Wavelet Toolbox)