How does the Noise Reduction System Work in Modern Headsets?

Nowadays, almost half of the assortment in the audio department of any store is equipped with an active noise reduction system. Some say that this is the best invention since the advent of headsets, while others are sure that this is just another ploy for pumping money.

Active noise cancellation is a way to eliminate unwanted noise by superimposing specially generated sound. The system captures the noise that needs to be suppressed through an external microphone and emits a sound wave with the same amplitude but mirrored phase of the original sound. A wave of noise and generated sounds are mixed and suppress each other.

This method of dealing with noise when listening to music allows you to abandon the full sound insulation or from an excessive increase in volume. These two methods were previously actively used to suppress unnecessary sounds.

This is Effective 

Many vainly consider the active noise reduction system a marketing ploy. The system will not protect against all noise but it performs its direct function properly. It is generally accepted that a person is able to perceive sounds in the range from 20 Hz to 20 kHz. Most modern “noise suppressors” cope well with noise from 100 Hz to 1 kHz. This is enough to save the listener from the conversations of other people, the noise of transport and wind. In good noise-canceling headphones, you can feel in a quiet room, even while on a noisy street. 

Useful Active Squelch Chips

Manufacturers thought since the headsets are equipped with an external microphone, then why not consider the possibility of using it for its intended purpose. Some models allow you to temporarily turn off noise reduction and broadcast the sound outside to the headphones. So, you can communicate with the interlocutor, move around safely or simply perceive information from the outside world without having to remove the headphones. Another advantage of models with an active reduction in the presence of a built-in amplifier. It is with its help that an anti-noise is generated for the system to work but the amplifier is capable of producing better sound.

What are the Alternatives 

At the moment, active noise reduction is the most technologically advanced solution. This chip cuts off up to 95% of extraneous sounds when listening to music. This uses a whole chain of additional elements and this affects the cost of headphones and headsets with active noise reduction. In contrast to this technology, passive noise reduction can be set. It is achieved by sealing the human ear from external noise due to the massive ear cushions in the on-ear models of earphones or flexible and ear cushions that take any form in vacuum models. Other things being equal, such headphones are cheaper and easier to use, which means they are more reliable in operation. 

What to Choose in the End?

First, you need to go to the nearest electronics store with exhibition samples and visually verify the operation of the active noise reduction system. A simple comparison of headphones with such a system and without it will immediately give the result. In order not to fall into the so-called risk zone, it is better to ask an expert or acquaintance for a test model. 

It is recommended that Plantronics headsets, one of the best models on the market. Noise reduction works both via Bluetooth and by wire, which performs the operation with a guaranty. These headphones have a number of advantages that make them unique and modern. This is a comfort when listening to tracks, and a high level of detail in sound. At the same time, a safe level of volume is noted, which does not adversely affect the health of the hearing organs. This will eliminate the negative impact of the system on your body, on the general condition, for this you will need to listen to music on headphones