July 29: In today’s always-on working culture, productivity is typically framed around flexibility, digital tools, time management strategies and ergonomic setup. Organisations invest heavily in collaboration platforms, workflow software and hybrid policies all designed to optimise output.
Yet one of the most influential - and often overlooked - factors affecting performance can be sound.
The environment we work in, whether that’s a shared co-working space, open-plan office or home setup, and the acoustic conditions within that environment can have an impact on concentration, cognitive load and overall wellbeing. In short, the right sound environment can support productivity, whilst unmanaged noise can undermine performance.
The Cognitive Cost of Noise
Modern workspaces are rarely silent. Even with the rise of hybrid working, employees report that background conversations, virtual meetings and environmental noise can cause distractions and make it difficult to sustain attention.
Research has found that exposure to intelligible background speech can significantly reduce performance on tasks involving working memory and reading comprehension (Halin et al., 2021). The reason is simply neurological: our brains are hard-wired to prioritise speech. Even when a conversation is irrelevant it automatically captures attention.
This constant redirection of focus increases cognitive load and over time, that additional mental effort can contribute to fatigue and reduced efficiency - particularly in knowledge-based roles where sustained concentration is critical.
In other words, noise is not simply an annoyance.
Reducing Fatigue in Hybrid Environments
While unmanaged noise can increase cognitive load, silence is not necessarily the answer.
Research has shown that controlled, predictable sound can positively influence mood and task engagement. Listening to self-selected music, for example, has been associated with improved focus and emotional state, leading to greater immersion in tasks and more sustained concentration (Küssner, 2020).
With this in mind, it is no coincidence that many employees turn to headphones to create their own focus zone. However, there is another key factor that is often overlooked - hearing is highly individual.
A recent report from the World Health Organisation highlighted the increasing prevalence of subtle hearing variations across the working population. Even minor differences in frequency sensitivity can affect how clearly audio is perceived. When sound is not optimised for the listener, the brain works harder to interpret detail and balance which often results in listening fatigue.
In a working world where employees may spend hours on calls or virtual meetings, this strain can become significant.
The Role of Personalised Sound
This is where personalised sound technology is emerging as part of a broader movement towards adaptive technology.
Rather than treating audio as a one size fits all solution, software developers such as Sweden-based Audiodo are using hearing profiling to create an individual audio calibration which is then applied directly within compatible devices. Rather than simply increasing volume to overcome distractions, it fine-tunes frequencies to match the listener’s unique sensitivities in each ear. By tailoring sound to the individual, personalised audio can reduce unnecessary listening effort and help to support clearer, more comfortable communication throughout the working day.
Reducing listening fatigue is not just about comfort - it can have an impact on mental endurance, meaning cognitive capacity remains available for analysis, creativity and decision-making.
A Smarter Approach to Productivity
As organisations continue refining hybrid models and investing in employee wellbeing and performance, the acoustic dimension of work deserves greater attention.
Cognitive wellbeing and the ability to sustain focus, manage mental load and avoid burnout is increasingly a part of modern workplace design. From lighting to air quality, companies are examining environmental factors that can shape performance - and audio deserves equal consideration.
With research in workplace acoustics and cognitive psychology showing that intelligible background speech can reduce task performance and increase mental fatigue, while controlled or self-selected audio can support engagement and sustained attention (Jahncke et al., 2021; Halin et al., 2021), the future of productivity may not lie in eliminating sound altogether; but in managing it strategically and recognising that each employee hears and works differently.
By acknowledging the power of sound in cognitive performance and looking to embrace technologies that adapt to the individual, organisations can create environments where focus is supported, energy is preserved and productivity feels sustainable rather than forced.
In an increasingly competitive landscape, that may prove to be a sound investment.
