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What are the different types of audio file filters in Python?

Marvah Mushtaq

Low-pass filter

A low-pass filter passes signals that are lower than a specific cutoff frequency and diminishes signals that are higher than the cutoff frequency.

In other words, a low-pass filter passes a signal that has a frequency lower than the cutoff frequency, which holds a certain value specified by the user. All the signals with frequencies more than the cutoff frequency are discarded.

A low-pass filter removes the highest frequencies from our audio signal.

Low-pass

High-pass filter

A high-pass filter is the opposite of a low-pass filter. It transmits signals with a frequency higher than a certain cutoff frequency and removes signals with a frequency lower than the cutoff frequency.

A high-pass filter removes the lowest frequencies from our audio signal.

High-pass

A band-pass filter

A band-pass filter can be formed by cascading a high-pass filter and a low-pass filter.

In other words, a band-pass filter is a filter that passes frequencies within a range and rejects frequencies outside that range.

A band-pass filter removes both the highest and the lowest frequencies from our audio signal.

Band-pass

A band-reject filter

A band-reject filter is a parallel combination of low-pass and high-pass filters.

In simple words, it rejects frequencies between the lower limit and the higher limit and passes other frequencies.

Reject-pass

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python
audio
filter
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