Science is a complex phenomenon that is limitless in its structure and one that even world renowned scientists cannot fathom as the more you try to understand it, the more confusing it becomes so we’ll leave it at that.

It is divided into 3 types when it comes to studies- physics, chemistry and biology and each of them have their own significant role in making the complex branch of science and technology that we know today that has given us innumerable significant breakthroughs in the form of discoveries and inventions that have proved beneficial to mankind.

We’ll leave the latter two for some other day and take physics right now by discussing about one of the most important concepts that make up the structure as a whole and that is band stop filter.


Band stop filter is defined as the filter which can easily pass through multiple frequencies at a time unaltered but as with some other filters, has been found to surrender to certain specified ranges to lower level ones.

These filters are quite unique in nature just like their counterparts as they embody certain aspects of filters and frequencies by catering to a select few just like band pass filters.

They are also popularly known as notch filters and band reject filters due to their capacity to reject frequencies at regular intervals as they lie between their specified cut off points.

Filters are basically in the form of objects or materials that have to judge the surge of electric currents between modified frequencies and they do their job perfectly in their respective areas.

Raman Spectroscopy

When the discussion is about filters, it becomes important for spectroscopy to come into the picture and its job is to determine the various molecule modal processes, including the rotational and revolving low frequency system modes are found out in this process.

It is named after the great Indian scientist and physicist Dr. CV Raman, who was also the first Indian-Asian to win the Nobel Prize in the field of Physics and it involves the scattering of photon particles in an inelastic form, which is known universally as Raman Scattering.

It is an important component that utilizes band stop filters in a sequential manner that include live reproduction of light and sound and the amplification of instruments for musical instruments such as acoustic guitar, sitar, mandolin and various other string and bass instruments that encompass the entire spectrum of music.

Signal Processing

It has been proven that band stop filters are connected to frequencies and signals whether it is low or high cost but not many people are aware that these signals can also be processed through the inner channelizing of the sound frequency and wavelength of the objects.

The signaling theory suggests that signal processing is a contentious subject among sound experts that they make up the whole structure of electrical engineering by testing the sound waves for their powerful magnitude.

Gugliemo Marconi, who invented the radio in 1909, did the same thing when he tested the might of sound by sending a wavelength signal at about 75 to 80 ft in the massive hall of his mansion which made several deep cracks on the walls and ignited gunpowder, which he had scattered all around the floor as part of the experiment.

With this, the efficiency of signals becomes even more pronounced than ever and its main focus is to plan, analyze, modify and synthesize the signals that include photographic images, sound and measurements.

Signal processing is practiced even today by scientists during their research to improve transmission of sound wave and the quality of measuring components of waves in a systematic manner.

Responsive Feedback

Band stop filters are narrow in their approach of handling frequencies where the amplitude and curves that are above the band are able to easily pass through the circuit in no time but the quantities remain stagnant that are used to refer to the behavioral pattern of the stop filters.

They are simply an inversely proportional form of the standard filters that are complimented by their standing in the process of signaling the filters that pass through either side of the bandwidth.

The signals, bandwidth process, band stop filters and frequencies are defined as similar objects and the formula used for calculating the frequencies and bandwidth are identical where they stand for BW, fC for centre frequency and ‘Q’ for the quality factor.


The notch filters are created by combining the low and high filter sections so that they are parallel in the same direction and neither tries to move ahead of the other and that is because the starting and final frequencies are at opposite ends of the spectrum.

All in all, band stop filters are the exact opposite of band pass filters and both form an important configuration in the field of quantum physics by occupying their respective places somewhere at the top of the game.