转换数据
在时域和频域之间变换数据
函数
fft | iddata 对象的快速傅里叶变换 (FFT) |
ifft | 将 iddata 对象从频域转换为时时域 |
etfe | Estimate empirical transfer functions and periodograms |
spa | Estimate frequency response with fixed frequency resolution using spectral analysis |
spafdr | Estimate frequency response and spectrum using spectral analysis with frequency-dependent resolution |
示例和操作指南
- Transform Time-Domain Data in the App
Transform time-domain data to frequency-domain or frequency-response data.
- Transform Frequency-Domain Data in the App
Transform frequency-domain input-output data to time-domain or frequency-response data.
- Transform Frequency-Response Data in the App
Transform frequency-response data to frequency-domain input-output data or to frequency-response data with a different frequency resolution.
概念
- Supported Data Transformations
Transform between time-domain and frequency-domain data at the command line.
- 时域和频域数据之间的转换
在命令行上在时域和频域
iddata对象之间进行转换。 - Transforming Between Frequency-Domain and Frequency-Response Data
Transform between
iddataandidfrdobjects at the command line.
