filtfilt

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• / Linear filtering
• / Filtering of finitge length signals
• / filtfilt

Idem, for a FIR filter.

Namespace: dsp::filter

Prototype

Vector<typename Scalar> filtfilt(const Vector<Tc> &h, const Vector<T> &x)

Parameters

Returns

Output, filtered signal.

Description

Zero-phase filtering (bi-directionnal)

This function can filter a finite length signal without any time delay, by using a FIR filter, which is applied twice: once normally, and once more time reversed: \[ y = \left((x \star h)_{-.} \star h\right)_{-.} \]

See also

filter()