BGlib.gmode.proc.fft.down_sample

BGlib.gmode.proc.fft.down_sample(fft_vec, freq_ratio)[source]

Downsamples the provided data vector

Parameters:

  • fft_vec (1D complex numpy array) – Waveform that is already FFT shifted

  • freq_ratio (float) – new sampling rate / old sampling rate (less than 1)

Returns:

fft_vec – downsampled waveform

Return type:

1D numpy array