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변환
객체
dsp.FFT | Discrete Fourier transform |
dsp.IFFT | Inverse discrete Fourier transform (IDFT) |
dsp.ISTFT | Inverse short-time FFT |
dsp.STFT | Short-time FFT |
dsp.ZoomFFT
| High-resolution FFT of a portion of a spectrum |
블록
도움말 항목
- 시간 영역 데이터를 주파수 영역으로 변환하기
이 예제에서는 FFT 블록을 사용하여 시간 영역 데이터를 주파수 영역으로 변환하는 방법을 보여줍니다.
- Transform Frequency-Domain Data into Time Domain
When you want to transform frequency-domain data into the time domain, use the IFFT block.
- Linear and Bit-Reversed Output Order
Learn the meaning of linear and bit-reversed data order as used by the FFT and IFFT blocks.
- Analyze a Subband of Input Frequencies Using Zoom FFT
Compute the zoom FFT of a sine wave in Simulink®.
- Speech Enhancement with Gain in Frequency Domain
Denoise a signal by applying selective gain on the signal in the frequency domain. Convert the denoised signal back into time domain and play the signal using Audio Device Writer.
- Wavelet Scattering (Wavelet Toolbox)
Derive low-variance features from real-valued time series and image data.
- Fault Detection Using Wavelet Scattering and Recurrent Deep Networks (Wavelet Toolbox)
Classify faults in acoustic recordings of air compressors using a wavelet scattering network paired with a recurrent neural network.
- Variable-Size Signal Support DSP System Objects
List of System objects that support variable-sized signals in DSP System Toolbox™.