変換

DCT、FFT、HDL FFT、HDL IFFT、IDCT、IFFT

オブジェクト

`dsp.FFT`	Discrete Fourier transform
`dsp.IFFT`	逆離散フーリエ変換 (IDFT)
`dsp.ISTFT`	Inverse short-time FFT
`dsp.STFT`	Short-time FFT
`dsp.ZoomFFT`	High-resolution FFT of a portion of a spectrum

Complex Cepstrum	Compute complex cepstrum of input
FFT	入力の高速フーリエ変換 (FFT)
IFFT	入力の逆フーリエ高速変換 (IFFT)
Inverse Short-Time FFT	Recover time-domain signals by performing inverse short-time, fast Fourier transform (FFT)
Magnitude FFT	Compute nonparametric estimate of spectrum using periodogram method
Real Cepstrum	Compute real cepstrum of input
Short-Time FFT	Nonparametric estimate of spectrum using short-time, fast Fourier transform (FFT) method
Zoom FFT	High-resolution FFT of a portion of a spectrum

DCT	Discrete cosine transform (DCT) of input
DWT	入力の離散ウェーブレット変換 (DWT) またはより小さい帯域幅およびより低速なサンプルレートのサブバンドへの信号の分解
IDCT	Inverse discrete cosine transform (IDCT) of input
IDWT	Inverse discrete wavelet transform (IDWT) of input or reconstruct signals from subbands with smaller bandwidths and slower sample rates

時間領域データから周波数領域への変換
この例では、FFT ブロックを使用して時間領域データを周波数領域に変換する方法について説明します。
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.
Delay and Latency
Configure the Simulink^® environment to minimize delay and increase simulation performance.
Variable-Size Signal Support DSP System Objects
List of System objects which support variable-sized signals in DSP System Toolbox™.