Just a small amount of acoustic knowledge, a touch of creativity, and a few simple solutions are enough to create a quiet space to start with. Indeed – and at a very low cost!

Children are more sensitive to noise than adults

Consider a family dinner as an example. The adults are conversing at the table, the dishwasher is humming in the background, and the sound of the television carries over from the adjacent room. An adult can still "filter out" the meaning of the conversation from this background noise. A child — particularly one who is only a few years old — often cannot. Research by Leibold and colleagues has demonstrated that the ability to filter speech out of ambient noise only develops during the teenage years [Leibold 2021].

In practical terms, this means that a child requires a distinct advantage of speech volume over background noise — known as the Signal-to-Noise Ratio (SNR). While an adult can manage when the speaker's voice is only slightly louder than the background noise (e.g., +6 dB), a child often requires an advantage of up to +15 dB [Iglehart 2020].

Furthermore, another key factor to consider is reverberation. If a room is empty and sound bounces around in it for a long acoustic duration, words tend to blend together. Experiments conducted by Klatte and colleagues showed that short reverberation coupled with background noise significantly impairs children's understanding of speech [Klatte 2010].

Reverberation hinders learning

In many homes, the primary issue is not external traffic noise, but rather the internal acoustics of the room. New or recently renovated rooms often feature bare walls, large windows, and hard floors, which create a pronounced reverberation. In such an environment, a child reading aloud or doing homework at a desk tires more quickly and struggles to concentrate – as if every word "disperses" into the air instead of sounding crisp and clear.

It is for good reason that acoustic standards specify concrete values. Polish regulations (PN-B-02151-4:2015) define the permissible reverberation times for rooms intended for learning. For classrooms, it is recommended that this time does not exceed approximately 0.6 seconds, ensuring clear speech intelligibility and acoustic comfort. Although there is no strict legal requirement for private residences, it is highly beneficial to use these figures as a practical benchmark when setting up a child's study area.

Domestic sources of noise

When discussing "noise," we often think of car horns or construction work outside. However, the sounds generated within our own homes can be just as disruptive: the hum of a computer fan, the buzzing of a refrigerator, or a washing machine running during homework hours.

The American Speech-Language-Hearing Association (ASHA) emphasizes that these seemingly minor background noises can be highly distracting to children [ASHA 2024]. Therefore, it is wise to critically assess what is playing in the background of a child's room. Sometimes, simply moving a desk by one meter to distance it from a shared kitchen wall can make a significant difference.

A study area that fosters concentration

The objective is not to transform a child's room into a professional recording studio. The priority is to establish a space that is as quiet as possible and isolated from noise sources. It is advisable to position the desk with its back to the wall, away from doors or busy corridors, reducing the risk of sound penetrating from other areas of the house.

Interior furnishing elements that serve as visual decor can also act as acoustic supports. Soft curtains, a rug with an underlay, or a bookshelf filled with books effectively absorb sound waves and reduce reverberation time in the room. Acoustic studies conducted in schools demonstrate that such measures can substantially improve speech intelligibility and student concentration [Klatte et al., 2010; Shield & Dockrell, 2008].

However, it is also worth considering additional solutions. Sound-absorbing panels made from recycled PET are readily available on the market and can be hung on the wall near the desk. Their purpose is to reduce reverberation time to values close to those recommended in professional standards.

Another practical step involves installing door seals or weatherstripping to restrict sound transmission from the hallway and kitchen. This solution is particularly useful in apartments where achieving complete spatial isolation is challenging.

The management of household activities is also highly relevant. It is beneficial to avoid running washing machines, dishwashers, or vacuum cleaners while a child is studying or reading. Home appliances generate noise in the 50–70 dB range, which easily disrupts concentration. Even if adults perceive such sounds merely as ambient background noise, for a child, they can present a significant barrier to focused learning.

Implementing these few straightforward adjustments aligns the home study environment closer to the acoustic standards specified for classrooms, making the learning process far more efficient and considerably less fatiguing.

White noise

Applications and devices emitting so-called white noise – a continuous sound resembling a fan, a radio without static, or the sound of rain – have recently gained popularity. These are marketed as tools to improve sleep and focus. However, researchers approach this solution with a degree of caution. Studies by Söderlund and colleagues have shown that white noise can indeed improve concentration in children with ADHD, as it acts as a form of "background stimulation" that facilitates focus [Söderlund et al., 2007]. This phenomenon is sometimes explained by the stochastic resonance effect – where a small dose of noise paradoxically helps the brain detect a signal that would otherwise "fade away" in silence.

Conversely, for neurotypical children who do not have concentration deficits, the effect is reversed. Instead of assisting, the noise introduces an additional stimulus, masks speech details, and hinders task focus. Literature reviews from recent years (2019–2023) emphasize that employing white noise as a "universal" tool for all students may cause more harm than good.

Some researchers add that utilizing white noise over extended periods can lead to habituation, resulting in difficulty falling asleep or learning without the additional stimulus. Therefore, it is always advisable to treat it as an auxiliary solution for specific situations rather than a permanent fixture of the learning environment.

Noise-canceling headphones – a solution or a compromise?

An increasing number of parents are considering purchasing headphones with Active Noise Control (ANC). These work by using microphones to pick up ambient sounds, and an electronic system generates an "inverted wave" to neutralize them. Consequently, the noise reaching the ear – particularly low-frequency noise like traffic rumble or fan hum – becomes much less intrusive.

Acoustic and ergonomic studies indicate that such a solution can indeed improve study conditions in environments that cannot be easily quietened (e.g., apartments on busy streets or noisy multi-child households). Headphones can also assist during brief periods of intense focus, such as reading comprehension or essay writing.

However, they are not a perfect solution. Firstly, active cancellation is most effective against steady, low-frequency noise, but does not eliminate sudden, high-frequency sounds like a dog barking or kitchen conversations. Secondly, prolonged use of headphones during study sessions can be fatiguing and may isolate the child from their natural surroundings. For younger students, safety is also a key consideration – a child needs to hear if a parent calls them or if there is an emergency in the home.

For these reasons, headphones should be viewed as a complementary tool rather than a primary solution. It is best to combine them with measures that improve the overall acoustics of the room: rugs, curtains, sound-absorbing panels, and minimizing general household noise. This approach ensures the child enjoys learning in peace without being isolated in an electronic bubble.

An investment in the future

Quietness at home is not a luxuries commodity. It is a fundamental condition for a child to realize their full potential. Every decibel reduced and every reduction in reverberation time represents an opportunity for better focus, faster reading, and more restful nights. A new school year always brings the hope of a successful start. The finest contribution we can make to children for this start is a quiet environment — because it is within quiet spaces that concentration, understanding, and knowledge are fostered.

Scientific sources:

• American Speech-Language-Hearing Association (ASHA). (2024). Classroom Acoustics. Retrieved from https://www.asha.org

• ANSI/ASA. (2010). ANSI/ASA S12.60-2010: Acoustical Performance Criteria, Design Requirements, and Guidelines for Schools. Acoustical Society of America.

• Crandell, C. C., & Smaldino, J. J. (2000). Classroom acoustics for children with normal hearing and with hearing impairment. Language, Speech, and Hearing Services in Schools, 31(4), 362–370.

• Iglehart, F. (2020). Effects of reverberation and signal-to-noise ratio on speech recognition and listening effort in school-age children. Journal of Educational Audiology.

• Klatte, M., Lachmann, T., & Meis, M. (2010). Effects of noise and reverberation on speech perception and listening comprehension of children and adults in a classroom-like setting. Noise & Health, 12(49), 270–282.

• Leibold, L. J., Buss, E., & Calandruccio, L. (2021). Developmental effects in masked speech recognition. Journal of the Acoustical Society of America, 149(2), 1171–1185.

• PN-B-02151-2:2018-01. (2018). Building acoustics – Noise protection in buildings – Part 2: Requirements for permissible sound levels in rooms. Polish Committee for Standardization.

• Shield, B., & Dockrell, J. (2008). The effects of environmental and classroom noise on the academic attainments of primary school children. Journal of the Acoustical Society of America, 123(1), 133–144.

• Söderlund, G. B. W., Sikström, S., & Smart, A. (2007). Listen to the noise: Noise is beneficial for cognitive performance in ADHD. Journal of Child Psychology and Psychiatry, 48(8), 840–847.

• World Health Organization (WHO). (2009). Night Noise Guidelines for Europe. Copenhagen: WHO Regional Office for Europe.

• World Health Organization (WHO). (2018). Environmental Noise Guidelines for the European Region. Copenhagen: WHO Regional Office for Europe.