Hearing the Edge: Auditory Optimisation for Performance, Clarity, and Resilience in eSports

Hearing the Edge: Auditory Optimisation for Performance, Clarity, and Resilience in eSports Executive Summary: Hearing is one of the three core perceptual channels used in elite competitive play, alongside vision and touch. Players rely on it instinctively, yet it remains the least deliberately trained, the least protected, and the least systematically optimised. This white paper introduces a structured, ethical, and adaptable framework for auditory training in eSports, designed to enhance perceptual clarity, cognitive efficiency, and long-term player resilience. The techniques outlined here are modular, non-invasive, and compatible with existing team workflows. For esports organisations, this framework highlights low-cost, evidence-informed methods to reduce fatigue, safeguard long-term hearing, and potentially sharpen in-game responses. Crucially, this is not about increasing cognitive load. It is about refining hearing until it becomes a reliable, backgrounded perceptual asset, freeing players to focus on visual and haptic gameplay with greater clarity and confidence. We invite players, coaches, tournament organisers, and health professionals to treat hearing as a foundational performance asset, on par with reflexes, nutrition, and team communication. 1. Introduction: Hearing as the Under-Trained Channel In elite play, hearing is never forgotten. Players rely on it instinctively for timing, positioning, coordination, and recognising threats. What is overlooked, however, is that hearing is rarely trained, calibrated, or protected with the same rigour as aim drills, reflex tests, or physical conditioning. This paper does not propose that hearing is more important than vision or touch. Rather, it argues that hearing deserves equal respect, and that with deliberate training and care, it can become a low-effort, high-trust perceptual channel. Sound should never intrude on cognition. It should provide reliable context, silently and efficiently supporting play. 2. The Case for Auditory Training Hearing is always a retrospective act: we perceive sound and only then interpret it. The speed and resilience of this interpretation are critical in esports, where even fractions of a second can alter the outcome of play. Players who can process auditory information rapidly and consistently are more likely to respond with stability under pressure. This stability is threatened by overload and fatigue. In extended sessions or when faced with unfamiliar soundscapes, players may develop what can be described as tunnel hearing, where only a narrow range of cues is registered, and critical information is missed. There are also long-term consequences. Continuous exposure to unsafe listening levels can cause irreversible hearing loss and gradually degrade perceptual accuracy. For athletes whose performance depends on clarity and speed, such degradation undermines both immediate performance and future resilience. Training hearing, like training reflexes, is therefore about building trust, clarity, and precision under load. When structured effectively, it reduces cognitive effort and allows hearing to become a reliable perceptual asset that supports focus and confidence in play. 3. Auditory Health Foundations Any structured approach to auditory training must begin with a clear understanding of each player’s hearing profile. Audiograms can reveal asymmetries between the ears, highlighting differences that may shape how players perceive sound in competitive contexts. One important factor to recognise is presbycusis, or age-related hearing loss. This is usually associated with later adulthood, but extended high-frequency testing (above 8 kHz) shows that subtle declines can be measurable from adolescence onwards, long before players are consciously aware of any change. These early shifts are not presbycusis in the strict sense, but they highlight how fragile the auditory system is at its highest ranges and why careful monitoring matters. For players, awareness of such changes is important because highfrequency cues often carry vital information about positioning and environment. Other aspects of auditory health are more immediate but equally significant. The Eustachian tube, which regulates middle-ear pressure, can be reset by simple actions such as yawning, chewing, or swallowing, helping to maintain tympanic sensitivity during play. Briefly breaking the seal of an earbud can also refresh comfort and responsiveness. Players must remain alert to tinnitus: training should never continue if ringing is present, and professional advice from an audiologist should be sought immediately. Everyday maintenance is also essential. Earwax management, timed correctly, can prevent obstruction; a full clean the day before competition allows natural defences to re-establish by match day. Teams should also have access to otoscopy expertise, ensuring that coaches or medical staff can monitor ear health effectively. Finally, recovery environments are crucial. Quiet rooms provide far better perceptual reset than relying on active noise cancellation or protective defenders, allowing the auditory system to rest and recalibrate. 4. Practical Training Techniques Auditory training begins with safe listening habits. Each player should establish an individual volume profile, measured with a dosimeter if possible. The accepted maximum is eighty decibels for eight hours, though in practice lower levels are safer and more sustainable across long sessions. Digital signal processing can then be used in training contexts to shape how sound is presented. By applying frequency profiles that match a player’s hearing test results, coaches can exaggerate or highlight particular bands. This allows players to become more aware of subtle cues, or to practice compensating for their own perceptual gaps, without altering the competitive environment itself. One method of building resilience is to train under asymmetric conditions. For example, playing with only one earbud inserted, or with an equaliser deliberately skewed to one side, forces players to adapt spatially. Although counterintuitive at first, these drills build an ability to localise and respond accurately even when hearing conditions are uneven, as can happen with equipment faults or temporary ear fatigue. Selective muting of auditory “stems” can be equally valuable. By silencing the music layer, voice channels, or effects in turn, players are compelled to attend more closely to the remaining cues. This isolates the information value of each element and strengthens perceptual trust. Reverberation training is another way to sharpen discrimination. Passing the game audio through a hardware or software reverb unit creates an echo-rich environment, requiring players to distinguish between direct sound and reflections. Practising in these conditions improves echo suppression, which is vital when competing in large venues with complex acoustics. Together, these drills broaden a player’s ability to cope with varied soundscapes, from the controlled audio of scrims to the unpredictable acoustics of live tournaments. Beyond technical adjustments, role-swapping can expose players to the entire team soundscape. By temporarily adopting another player’s role, individuals gain insight into the cues and decision points that shape team dynamics. Spatial orientation drills can further extend this adaptability, deliberately shifting or rotating audio cues so that players must relearn localisation rapidly. Over time, this enhances both individual perceptual speed and collective resilience. 5. Retrospective Concurrent Verbalisations (RCVs) Retrospective Concurrent Verbalisations, or RCVs, are structured reflections in which players describe what they perceived during a match and how they responded. These can be carried out individually, by replaying recordings and narrating the thought process, or collectively, with teammates reviewing the same material together. In either case, the aim is to surface the often-implicit link between hearing, interpretation, and action. RCVs can reveal processing gaps, shifts in confidence, or specific moments where perception faltered under pressure. By making these patterns explicit, players can learn not only from their own performance but also from the perspectives of others. Listening to a teammate’s RCV helps build empathy and alignment, showing how the same soundscape may be interpreted differently by different members of the team. Practical prompts and templates are included in Appendix B, offering examples of questions and transcript formats that can guide reflection. Using these tools regularly helps embed auditory awareness into the wider cycle of training and performance review. 6. Communication and Voice Control Effective communication depends on more than the content of what is said. Microphone technique is critical: players must avoid speaking too close to the mic, which creates a lowfrequency boost known as the proximity effect, or too far away, which risks masking by background noise. A consistent mic position ensures that call-outs remain intelligible in the heat of play. Equally important is voice identity. Each player should cultivate a clear and distinct vocal signature so that teammates can immediately recognise who is speaking without having to check visually. This becomes especially useful during high-stress moments when reaction time is minimal. Teams can also train themselves to detect stress in one another’s voices, learning to recognise subtle shifts in pitch or pacing that indicate cognitive overload. Such awareness allows teammates to adapt or provide support before mistakes occur. Vocal entrainment can strengthen coordination further. By matching pacing and tone, players can help regulate team rhythm, creating a steadying effect during tense matches. Short, coded calls serve a similar function: repeated, well-practised phrases communicate intent more quickly than improvised speech, reducing hesitation and ambiguity. Professional teams often develop their own call lexicons; formalising and rehearsing these codes can make communication faster and more reliable. Discipline also extends to what is not said. Masking intent, avoiding unnecessary words or tonal cues that might unintentionally reveal uncertainty, prevents opponents from exploiting overheard communication in open-mic environments. Shared codes and a tolerance for auditory diversity allow groups to bridge accent differences, ensuring that clarity is never compromised by linguistic variation. For coaching staff, formalising communication protocols ensures that what might otherwise be left to habit becomes a deliberate performance asset. It is also worth recognising that speech places a higher cognitive load on players than sound effects or music. Structured communication helps reduce this load by keeping language economical, repeatable, and easy to process under pressure. 7. Inclusion, Variation, and Adaptive Advantage Every player hears differently, and these differences should not be seen as weaknesses to be corrected. On the contrary, variation offers teams a strategic advantage, enabling them to cover a wider range of auditory cues and to adapt with greater nuance to changing soundscapes. For example, women typically retain high-frequency sensitivity longer than men, extending the team’s perceptual reach into the upper registers. Neurodiverse players may also process sound in distinctive ways, creating alternative strengths in pattern recognition or auditory focus. As noted in Section 3, auditory asymmetry is common rather than exceptional; most players have some degree of difference between their ears. Far from being an obstacle, this diversity can become a tactical resource if acknowledged and trained appropriately. Digital signal processing and targeted perceptual drills make it possible to build resilience without the need for medical correction or diagnosis. By tailoring exercises to individual hearing profiles, teams can transform variation into complementary strength, ensuring that no single style of listening dominates and that collective perception becomes richer and more adaptive. 8. Monitoring and Ethics Auditory training should always be grounded in careful monitoring and ethical practice. Professional support is central to this process: audiologists should be recognised as part of pro teams’ staff, playing a role comparable to physiotherapists or nutritionists. Their expertise ensures that training remains safe, effective, and individually appropriate, and that early signs of hearing problems are identified before they affect performance. Structured reflection also helps safeguard wellbeing. Retrospective Concurrent Verbalisations can serve not only as performance analysis tools but also as perceptual health checks, drawing attention to moments of fatigue, doubt, or overload. Importantly, no exercise should be mandatory or coercive. Players must feel empowered to state when a technique no longer benefits them or when auditory strain is becoming counterproductive. By treating hearing health as both a performance and a welfare concern, teams can build sustainable practices that respect the long-term resilience of their players. 9. Application and Integration Auditory training is most effective when it is woven naturally into existing routines rather than treated as a separate burden. Drills can be introduced as part of warm-ups, cooldowns, or post-match reflection, ensuring that they complement rather than compete with other forms of preparation. No two teams are identical, and each group must test, adjust, and adapt exercises to suit its own culture and style of play. It is usually best to begin with a small set of techniques, building trust and comfort before expanding to more complex programmes. In this way, players come to see auditory training not as an external imposition but as a resource that supports their own practice. Teams can also look outward, analysing public match recordings for the auditory patterns of their opponents. Sound signatures, pacing, and cue habits often reveal valuable insights, and training on these datasets can sharpen anticipatory accuracy in competition. 10. Recovery and Reset Protocols After intense matches or extended training sessions, auditory rest is essential to prevent temporary threshold shifts and to restore perceptual clarity. Players should be encouraged to take quiet breaks rather than moving directly from one loud environment to another. Passive listening, such as spending time with natural soundscapes, can be restorative, but continuous exposure to high sound levels should be avoided. Simple physiological actions can also help recalibrate sensitivity. Swallowing, chewing, and yawning all assist in resetting middle-ear pressure, easing strain on the auditory system. Over the longer term, periodic checks with dosimeters and regular recalibration of listening volumes provide a safeguard against unnoticed escalation in exposure, ensuring that recovery is not only felt subjectively but also measured objectively. 11. The Future of Fair Play Competitive integrity depends on consistency across all aspects of play. Just as games regulate input lag, visual aids, and reflex enhancers, they should also recognise and protect hearing. Auditory capacity is not a marginal factor but a fundamental condition of fair competition. One possible step is to include audiograms as part of match-day protocols, in much the same way that weigh-ins function in combat sports. This would not only safeguard players but also ensure that hearing health is recognised as integral to performance standards. In time, standardised digital signal processing may even be permitted, provided it is applied equally, allowing all players to compete on level perceptual ground. Hearing health should never be treated as a form of special accommodation. It is part of baseline fairness, ensuring that every competitor enters the game with the same opportunity to perceive, interpret, and respond. 12. Evidence and Research Gaps At present, there are no peer-reviewed trials demonstrating that an auditory-training programme directly improves esports match outcomes such as K/D ratios or round-win rates. However, there is substantial adjacent evidence showing that auditory training enhances spatial hearing and adaptation to altered cues. For example, Steadman et al. (2019) demonstrated that short training sessions with nonindividualised HRTFs reduced localisation error, with benefits persisting across days. Hofman et al. (1998) showed that listeners could relearn localisation after altering pinna cues with ear moulds. More recent studies confirm effective adaptation to non-individual HRTFs, particularly when training involves active learning in VR (Stitt et al., 2019; Poirier-Quinot & Katz, 2021). Training under asymmetric conditions has also been tested. Valzolgher et al. (2024) reported that spatial hearing training in VR with simulated asymmetric loss improved localisation accuracy, especially when tasks involved reaching to sounds. Related studies show that audiovisual VR training enhances spatial adaptation in people with unilateral hearing loss (Alzaher et al., 2023). Beyond localisation, computerised training has improved cocktail-party listening and speechin-noise perception. Ferguson et al. (2014) found that phoneme discrimination training improved speech-in-noise understanding in older adults, while Murphy et al. (2023) showed that game-based auditory training enhanced selective spatial attention. Clinical trials with paediatric bilateral cochlear-implant users also report improvements in spatial hearing following VR-based auditory training (Sladen et al., 2022). In other words, the science shows that auditory skills can be trained and adapted, but esports has yet to test whether those laboratory gains translate into match-winning advantages. This white paper aims to spark that discussion. Closing Note Auditory clarity is not about hearing more; it is about trusting what you hear so completely that conscious effort is no longer required. When sound becomes a backgrounded and reliable channel, players are free to act with greater speed, composure, and precision. The ears then cease to be a distraction and instead become an asset that supports every decision in play. Like any other skill, this trust can be trained. The message is simple: treat hearing as a weapon, and train it accordingly. References Alzaher, M., Valzolgher, C., Verdelet, G., Pavani, F., Farnè, A., Barone, P., & Marx, M. (2023). Audiovisual training in virtual reality improves auditory spatial adaptation in unilateral hearing loss patients. Journal of Clinical Medicine, 12(6), 2357. https://doi.org/10.3390/jcm12062357 Ferguson, M. A., Henshaw, H., Clark, D. P. A., & Moore, D. R. (2014). Benefits of phoneme discrimination training in a randomized controlled trial of 50–74-year-olds with mild hearing loss. Ear and Hearing, 35(4), e110–e121. https://doi.org/10.1097/AUD.0000000000000020 Hofman, P. M., Van Riswick, J. G. A., & Van Opstal, A. J. (1998). Relearning sound localization with new ears. Nature Neuroscience, 1(5), 417–421. https://doi.org/10.1038/1633 Poirier-Quinot, D., & Katz, B. F. G. (2021). On the improvement of accommodation to nonindividual HRTFs via VR active learning and inclusion of a 3D room response. Acta Acustica, 5(2021), 1–13. https://doi.org/10.1051/aacus/2021019 Steadman, M. A., Kim, C., Lestang, J. H., Goodman, D. F. M., & Picinali, L. (2019). Shortterm effects of sound localization training in virtual reality. Scientific Reports, 9, 18284. https://doi.org/10.1038/s41598-019-54811-w Stitt, P., Picinali, L., & Katz, B. F. G. (2019). Auditory accommodation to poorly matched non-individual spectral localization cues through active learning. Scientific Reports, 9, 1063. https://doi.org/10.1038/s41598-018-37873-0 Valzolgher, C., Capra, S., Sum, K., Finos, L., Pavani, F., & Picinali, L. (2024). Spatial hearing training in virtual reality with simulated asymmetric hearing loss. Scientific Reports, 14(1), 2469. https://doi.org/10.1038/s41598-024-51892-0 Appendices Appendix A: Minimum Toolkit A small set of tools is sufficient to begin structured auditory training. A calibrated dosimeter, either in-ear or inline, helps establish and monitor safe listening levels. An audiogram app or a professional test provides baseline hearing profiles for each player. Open-source DSP software can be used during training sessions to shape frequency responses. For reflection exercises, an analogue reverb pedal or a simple plugin is enough to simulate echoes and reverberant spaces. Finally, a basic otoscope allows trained medical staff or coaches to check ear health and ensure that common issues, such as wax build-up, are detected early. Appendix B: RCV Prompts and Templates Retrospective Concurrent Verbalisations benefit from structured guidance. Players can begin with simple questions: “What did I hear just before I reacted?” “Was that a deliberate sound cue or background?” “Did I trust what I heard, or hesitate?” “Was my reaction correct, and if not, why?” A freeform transcript template with confidence markers and timestamps allows these reflections to be recorded consistently, making it easier to identify patterns and track changes over time. Appendix C: Coach and Player Checklists Coaches and players can use checklists to ensure that auditory practices are integrated into training. Each player should confirm that individual listening levels are set appropriately and that auditory stem drills are rotated weekly to prevent over-reliance on a single layer of sound. Recovery sessions should be scheduled after periods of heavy exposure. RCVs should be reviewed and, when useful, shared within the team. Coaches must also remain alert to signs of fatigue or exclusion, adjusting training demands when necessary. Appendix D: FAQs and Objections Common concerns about auditory training can be answered simply. It is not a performance enhancer in the sense of artificial advantage; it is a form of perceptual hygiene and resilience. The modules are short and integrate naturally into existing routines, so they do not distract from other training demands. The approach is also relevant for casual players, who benefit from greater comfort, safety, and awareness. No specialised equipment is required, as all recommended tools are optional and scalable. Finally, the framework is inclusive: it encourages tailoring to individual strengths and applies equally to neurodiverse players. Prepared by: Dr Iain McGregor Edinburgh Napier University [email protected] 25 August 2025