Similarly, the general structure of a feedback comb filter is shown on the right.

Comb filters are used in a variety of signal processing applications.

Hence the magnitude response of the comb filter is periodic.

While good comb filters can do so adequately, these two signals cannot be completely separated.

By the 1990s, a further development took place with the event of three-line digital comb filters.

When the two tapes' audio signals are later mixed, a comb filter effect can be heard.

Comb filters may also be implemented in continuous time.

What on earth is a digital comb filter?

In the case of the feedforward comb filter, this is:

Low- to mid-line sets use a glass comb filter.

Analog comb filters, first introduced in the '70s on high-end sets, gradually became more common.

Comb filters are also commonly used to separate signals, and eliminate artifacts, from composite sources.

The feedback comb filter has some properties in common with the feedforward form:

The feedback comb filter is a simple type of infinite impulse response filter.

Looking again at the Z-domain transfer function of the feedback comb filter:

The feedforward comb filter is one of the simplest finite impulse response filters.

Therefore, for our feedforward comb filter, we get:

(Modern televisions attempt to reduce this interference further using a comb filter.)

By the 1970s, TVs had begun using solid-state electronics and the first comb filters appeared.

Comb Filter A feature that improves resolution, picture quality, and reduces objectionable color patterns.

A comb filter can be used to single out a few frequencies in the audio signal producing a sharp, resonating transformation of the voice.

If we make the substitution into the Z-domain expression for the feedback comb filter, we get:

The "comb filter" expands texture.

It is a passive stereoscopic 3D system that utilizes spectral comb filters produced using thin-film optics technology.

This is because summing two or more paths with different delays creates a comb filter even when the individual paths have a flat frequency response.