For some people, silence is the ideal setting for getting work done. For others, it can feel strangely distracting. They may reach for headphones, switch on a fan, play soft music or turn on a white-noise track before settling into a task.

The preference is not necessarily about avoiding silence. Background sound can sometimes help create a more comfortable level of stimulation, make unpredictable noises less noticeable and, for some people, support sustained attention. But the effect varies considerably from person to person. 

Research suggests that the type and intensity of sound matter, too. A steady, unobtrusive sound may be easier to work with than a conversation happening nearby, while louder or more meaningful sounds can interfere with concentration.

The brain may not always prefer complete silence

Concentration requires the brain to select information that matters while filtering out distractions. In a completely quiet environment, even small sounds – a notification, a door closing or someone moving nearby – can become noticeable.

A consistent background sound can provide a relatively predictable auditory environment. Instead of constantly reacting to changes around them, some people may find it easier to settle into their task when there is a steady layer of sound.

Research published in Applied Acoustics in 2021 examined how different background sounds affected concentration and verbal reasoning in an experiment involving 79 participants. The researchers found that sound type and intensity both influenced performance. Intelligible speech was particularly disruptive, while some forms of music performed better in the concentration tasks. The study also found that higher sound levels generally came with greater performance losses and annoyance.

The findings suggest that "background noise" is not one single category. What is playing in the background can be just as important as how loud it is.

Why repetitive sounds can feel easier to ignore

A conversation is difficult to treat as mere background because the brain is naturally sensitive to speech. Even when people are not participating in a conversation, they can involuntarily process parts of what is being said.

Earlier research published in the British Journal of Psychology examined how office noise and speech affected tasks including prose memory and mental arithmetic. The researchers found that irrelevant speech could disrupt performance, while different types of office noise affected tasks in different ways.

This helps explain why a café filled with an indistinct hum may feel manageable to one person, while a nearby conversation can completely derail their train of thought.

A predictable sound such as rainfall, a fan or steady white noise does not carry the same amount of meaningful information as speech. For some listeners, that makes it easier to keep the sound in the background while directing attention towards reading, writing or routine work.

White noise and attention not a universal solution

White noise has become particularly popular among people looking for ways to improve concentration. It contains a broad range of frequencies and creates a continuous sound that can mask sudden changes in the surrounding environment.

However, research does not support the idea that white noise automatically improves concentration for everyone.

A systematic review and meta-analysis published in the Journal of the American Academy of Child & Adolescent Psychiatry examined 13 studies involving 335 children and young adults with ADHD or elevated ADHD symptoms. The researchers found a small improvement in laboratory task performance when participants were exposed to white or pink noise.

The same analysis looked at 11 studies involving 335 participants without ADHD or significant attention problems. In that group, white and pink noise were associated with a small decline in task performance.

In other words, a sound that helps one person focus could make another person less efficient.

The role of stimulation

One explanation explored in attention research is that people may perform best within a certain range of mental arousal. Too little stimulation can make a task feel monotonous, while too much can become distracting.

A 2007 study published in the Journal of Child Psychology and Psychiatry compared children with ADHD with a control group while they completed cognitive tasks with and without white noise. The researchers reported that white noise improved performance among the ADHD group but had the opposite effect among the control participants.

The researchers discussed the findings through the idea of "stochastic resonance", in which a moderate amount of noise can, under certain circumstances, help a system respond more effectively to information.

That does not mean that everyone who likes background noise has ADHD. The evidence simply suggests that the relationship between sound and attention can differ depending on an individual's cognitive characteristics.

Music can be helpful, but lyrics may complicate things

For people who prefer music rather than pure noise, the choice of track can also matter.

A 2020 study published in Psychological Research investigated the effect of participants' preferred background music during a sustained-attention task. The researchers noted that previous findings on background music and attention had been mixed, highlighting how factors such as the listener, task and type of music can influence the outcome.

Music can also introduce additional information for the brain to process. Lyrics, particularly in a language the listener understands, may compete for some of the same attention needed for reading or writing.

This may explain why some people choose instrumental music, ambient tracks or familiar playlists when working, rather than songs with prominent vocals.

Why loudness matters

More sound does not necessarily mean more focus.

A 2021 Applied Acoustics study found that increasing sound intensity generally resulted in greater losses in accuracy and verbal reasoning, while annoyance increased when background sound became louder.

More recent research published in Building and Environment in 2025 similarly examined different background sounds and sound-pressure levels in enclosed offices. The study found that both the type of sound and its level affected subjective responses, while auditory working memory was impaired at 60 decibels.

The findings point towards a simple principle: background sound may be useful when it remains in the background.

Finding the right sound environment

There is no universally ideal soundtrack for concentration. Some people work best in silence, while others prefer music, white noise, rainfall or the natural hum of a busy environment.

The research suggests that predictable, low-level sounds may be less disruptive than speech or sudden noises. It also indicates that the benefits of white or pink noise are not universal and may depend on individual attention characteristics.

For anyone experimenting with background sound, the practical approach is therefore simple: choose something that does not demand attention, keep the volume comfortable and pay attention to whether it actually improves the quality of work.

Sometimes, concentration does not require absolute silence. It may simply require finding the kind of sound that the brain can learn to ignore.