optic.dsp.core.delaySignal

delaySignal(sig, delay, Fs=1, NFFT=1024)

Apply a time delay to a signal sampled at fs samples per second using FFT/IFFT algorithms.

Parameters:

  • sig (ndarray) – The input signal.

  • delay (float) – The time delay to apply to the signal (in seconds).

  • Fs (float) – Sampling frequency of the signal (in samples per second). Default is 1.

  • NFFT (int, optional) – FFT size to be used. Must be greater than the length of the filter. If None, it will be set to the next power of 2 greater than or equal to the length of the filter. Default is None.

Returns:

The delayed signal.

Return type:

ndarray