All Pass Filter Applications, Advantages, Features, Uses

All-Pass filters are those electronic filters that can allow all frequencies signal (eg. from low frequency to high frequency). All pass filter always keeps constant the gain, it just changes the phase shift among different frequencies.

The main applications of All-Pass Filter are,

1. All-Pass filters are used as phase corrector in communication, modulation, and testing circuits.

2. All pass filters are used in audio circuits to reduce unwanted phase shifts which creates noise.

3. They are used to compensate phase changes of voice signals in the electronic communication system.

4. They are used in audio circuits for frequency delaying to make voice echo.

5. They are used in audio circuits for the tunning purposes also.


The main advantages of All-Pass Filter are,

1. All pass filter does not change the gain.
2. It always keeps constant input and output amplitude.
3. It can pass all types of signals of any frequency.
4. It provides shift changing at any electrical degrees.
5. It can allow all frequencies without changes in level.


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