torchsig.utils.dsp.polyphase_decimator¶

torchsig.utils.dsp.polyphase_decimator(input_signal: ndarray, decimation_rate: int) → ndarray[source]¶

Integer-rate polyphase filterbank-based decimation

Parameters:

input_signal (np.ndarray) – Input signal to be decimated
decimation_rate (int) – The decimation rate

Raises:

ValueError – Throws an error if the right number of samples are not produced

Returns:

Decimated output signal

Return type:

np.ndarray