Can I use a transfer function to filter noise?

1. Is a transfer function a filter?
2. What is a noise transfer function?
3. What is the use of transfer function in filter?

Is a transfer function a filter?

A filter is a circuit whose transfer function, that is the ratio of its output to its input, depends upon frequency. There are three broad categories of filter which are widely used: Low-pass filters allow any input at a frequency below a characteristic frequency to pass to its output unattenuated or even amplified.

What is a noise transfer function?

An acoustic transfer function (ATF) is defined as the relationship between a sound level of a source, and the sound level at some remote point known as the receiver.

What is the use of transfer function in filter?

A filter transfer function that contains complete quadratic equations in both the numerator and denominator and provides the basis for implementing high-pass, low-pass, and single-frequency notch characteristics as well as band-reject realizations.