Filter

Lifting scheme versus filter banks

Lifting scheme versus filter banks
  1. What is meant by filter bank?
  2. How many types of filter banks are there?
  3. What is synthesis filter bank?

What is meant by filter bank?

In signal processing, a filter bank (or filterbank) is an array of bandpass filters that separates the input signal into multiple components, each one carrying a single frequency sub-band of the original signal.

How many types of filter banks are there?

There are two main types of filter banks. An analysis filter bank and a synthesis filter bank.

What is synthesis filter bank?

The synthesis filter bank, also known as the channel synthesizer, consists of a set of parallel bandpass filters that merge multiple input narrowband signals, y0[m], y1[m], y2[m], … , yM-1[m] into a single broadband signal, v[n]. The input narrowband signals are in the baseband.

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