Sound pollution is the unbearable rise of noise from horns, loudspeakers and machines.

Tip: choose the version whose length matches your exam — the shorter editions (150–250 words) suit PSC, JSC and SSC, while SSC, HSC and university-admission answers often call for 300–1000 words.

Sound Pollution Paragraph (150 Words)

Sound pollution, also known as noise pollution, is the exposure of people and animals to loud, unwanted sounds at intensities that disturb comfort, impair health, and disrupt behaviour. In Bangladesh's cities, sound pollution is inescapable. Horns blare continuously on congested roads; loudspeakers broadcast at maximum volume from markets, political rallies, and religious events; construction equipment operates around the clock; and industrial machinery roars near residential areas. The World Health Organization recommends that noise in residential areas not exceed 55 decibels during the day, yet measurements in Dhaka regularly record 80 to 100 decibels on busy streets — levels at which permanent hearing damage can occur with prolonged exposure. Beyond hearing loss, noise pollution causes insomnia, high blood pressure, anxiety, and reduced concentration, harming students' academic performance and workers' productivity. Controlling sound pollution requires horn restrictions, noise barriers, limits on loudspeaker use, and consistent enforcement of noise standards across urban and industrial zones.

Sound Pollution Paragraph (200 Words)

Sound pollution, also called noise pollution, is the presence of excessive or harmful noise in the environment that disturbs human peace and harms health. It is a form of environmental pollution that is often underestimated, yet its effects on physical and mental well-being are thoroughly documented. In Bangladesh, sound pollution is a pervasive daily experience for city dwellers, particularly in Dhaka, Chittagong, and Narayanganj, where noise levels on major thoroughfares frequently reach 80 to 100 decibels — far above the safe limit of 55 decibels recommended by the World Health Organization.

The sources of sound pollution in Bangladesh are manifold. Hydraulic horns on buses and trucks blast at volumes exceeding 120 decibels. Loudspeakers mounted on shops, mobile vendors, and political vehicles amplify sound aggressively across residential streets. Construction sites operate heavy machinery — pile drivers, concrete mixers, and drilling equipment — often through the night. Industrial factories produce continuous mechanical noise. Religious gatherings and festival celebrations frequently involve amplified music at extreme volumes for hours at a time. Firecrackers during festivals add sudden impulse noise. The consequences include hearing impairment, sleep disorders, stress, high blood pressure, and cardiovascular disease. Children exposed to chronic noise show reduced concentration and impaired learning ability. Effective remedies include enforcing horn-free zones around schools and hospitals, installing sound barriers near highways, and setting strict limits on loudspeaker use in residential areas.

Sound Pollution Paragraph (250 Words)

Sound pollution, also referred to as noise pollution, is the contamination of the acoustic environment by unwanted or excessively loud sounds that interfere with human health, behaviour, and quality of life. It is a relatively modern problem, intensified by the growth of cities, motorised transport, and industrial activity. In Bangladesh, sound pollution has become a chronic public health concern, especially in urban areas where population density concentrates noise sources and leaves little acoustic respite.

The sources of sound pollution in Bangladesh are numerous and persistent. Road traffic is the dominant source in cities: the incessant honking of cars, buses, trucks, auto-rickshaws, and motorcycles creates a wall of sound that assaults pedestrians, shopkeepers, office workers, and residents alike. Hydraulic and multi-tone horns, banned under national sound pollution rules but widely used in practice, can exceed 100 decibels at close range. Construction activity — pile driving, concrete mixing, excavation, and metalwork — generates intense noise that often continues beyond permitted hours. Industrial plants located within or near residential neighbourhoods expose communities to the constant hum and clatter of machinery. Loudspeakers used for commercial advertising, political campaigns, and religious broadcasts frequently violate permissible limits.

The effects of sound pollution on health are significant. Prolonged exposure above 85 decibels causes irreversible hearing loss. Chronic noise disrupts sleep, elevating stress hormones and increasing the long-term risk of hypertension and heart disease. Children who grow up near busy roads or under flight paths show measurable deficits in reading comprehension, memory, and attention compared to peers in quieter environments. The government of Bangladesh has enacted the Noise Pollution (Control) Rules, but enforcement is minimal. Addressing the problem requires commitment from transport authorities, city planners, the judiciary, and citizens themselves.

Sound Pollution Paragraph (300 Words)

Sound pollution, or noise pollution, is the presence of unwanted, excessive sound in the environment at levels that disturb well-being, impair health, and interfere with communication. Unlike air or water pollution, sound pollution leaves no physical residue in the environment — but its effects on the human body and mind are well-established and serious. In Bangladesh, particularly in the crowded, traffic-saturated cities of Dhaka, Chittagong, Narayanganj, and Gazipur, sound pollution is a constant companion of daily life.

The causes of sound pollution in Bangladesh are many and interrelated. The single greatest source in urban areas is vehicular traffic. Bangladesh's cities have experienced explosive growth in the number of motor vehicles over the past two decades, and the road infrastructure has not kept pace, resulting in chronic congestion. In stop-and-go traffic, drivers compulsively use horns — a behaviour that is both a response to and a cause of the chaotic traffic culture that prevails on city roads. Hydraulic horns, which can produce sounds of 100 decibels or more, are technically prohibited but are easily purchased and widely fitted to buses and trucks. Construction activity is the second major source: in a country undergoing rapid urbanisation, construction sites are ubiquitous, and activities such as pile driving, concrete breaking, and metalwork produce intense noise that travels far beyond site boundaries. Industries located in mixed residential-industrial zones subject nearby residents to the constant noise of heavy machinery. Loudspeakers used for commercial, political, and religious purposes compound the problem throughout the day, and sometimes into the night.

The health consequences of sound pollution are diverse. The most direct is noise-induced hearing loss (NIHL), which develops gradually from repeated exposure to sounds above 85 decibels and is permanent and irreversible. Beyond hearing, chronic noise causes sleep disruption, which in turn leads to fatigue, irritability, and impaired concentration. Research consistently links long-term environmental noise exposure to elevated blood pressure, increased heart rate, and a higher risk of cardiovascular disease. Students living or studying near noisy roads show lower academic performance in standardised tests. Remedies include enforcing horn bans around schools and hospitals, creating noise maps of cities to identify hotspots, requiring sound insulation in new buildings near highways, and educating the public about the health costs of noise. The Noise Pollution (Control) Rules of 2006 must be rigorously enforced.

Sound Pollution Paragraph (500 Words)

What Is Sound Pollution?

Sound pollution, also called noise pollution, is the presence of unwanted, excessive, or harmful sound in the environment at levels that disturb human health and quality of life. Sound is measured in decibels (dB), a logarithmic scale on which each increase of 10 dB represents a tenfold increase in intensity. The threshold of human hearing is 0 dB; normal conversation is around 60 dB; a jackhammer at close range is approximately 100 dB; and a jet engine is around 140 dB. The World Health Organization recommends that residential areas not be exposed to more than 55 dB during the day and 45 dB at night. Sustained exposure above 85 dB begins to cause irreversible hearing damage.

In Bangladesh, these thresholds are routinely and dramatically exceeded in every major city. Noise measurements taken at intersections in Dhaka frequently record 85 to 95 dB — the equivalent of standing next to a running chainsaw — during peak traffic hours. This is the acoustic environment in which millions of students try to study, patients try to recover in hospitals, and workers try to concentrate in offices every day. Sound pollution may not leave a visible stain on the environment the way water or air pollution does, but its damage to health and quality of life is real, cumulative, and in some cases permanent.

Sources, Effects, and Solutions

Vehicular noise is overwhelmingly the dominant source of sound pollution in Bangladesh's cities. The rapid growth of the motor vehicle fleet — including millions of motorcycles, auto-rickshaws, private cars, buses, and trucks — combined with severe traffic congestion creates an unrelenting noise environment on city streets. The compulsive use of the horn is deeply embedded in Bangladeshi driving culture: horns are sounded not as emergency warnings but as a continuous communication tool, signalling intention, expressing frustration, and asserting presence. Hydraulic or multi-tone horns, which produce sounds far above the permissible limit of 90 dB for vehicles under the Noise Pollution (Control) Rules 2006, are widely available and commonly fitted on commercial vehicles.

Construction noise is the second major source in rapidly urbanising areas. Bangladesh's cities are perpetual construction sites, with residential towers, commercial complexes, roads, and infrastructure projects under development simultaneously in every district. Pile driving, concrete breaking, steel cutting, and the operation of heavy machinery produce intense, low-frequency noise that penetrates walls and windows. Construction often continues beyond the legally permitted hours — typically 7 a.m. to 7 p.m. in residential areas — because enforcement is rarely exercised.

Industrial noise affects communities near factories and manufacturing zones. The continuous operation of compressors, generators, looms, metal-pressing machines, and grinding equipment creates a low-level noise baseline that can cross safe thresholds for nearby residents working or living close to factory premises. Loudspeakers are another pervasive source: shops, street vendors, political rallies, religious events, and festival celebrations all employ amplified sound, often at extreme volumes, with little regard for surrounding residents. Firecrackers during Eid, Diwali, and other celebrations add impulse noise events that can cause sudden, acute hearing damage.

The health consequences of sound pollution are serious and multidimensional. Noise-induced hearing loss is the most direct effect: sustained exposure above 85 dB over years gradually destroys the hair cells of the inner ear, causing permanent hearing impairment that cannot be treated or reversed. Beyond hearing, research consistently demonstrates that chronic noise exposure elevates levels of cortisol and adrenaline — the body's stress hormones — increasing the risk of hypertension, coronary heart disease, and stroke. Disrupted sleep caused by nocturnal noise impairs immune function, memory consolidation, and cognitive performance. Children are particularly affected: studies conducted in Bangladesh and other countries show that schoolchildren near busy roads score lower on tests of memory, reading, and mathematics than peers in quieter areas.

Solutions to sound pollution require action on multiple fronts. The government must enforce the Noise Pollution (Control) Rules 2006 rigorously: traffic police must ticket drivers using prohibited horns, and construction companies must demonstrate compliance with permitted working hours. Dedicated horn-free zones around schools, hospitals, and residential areas — already designated in law — must be made real through physical signage, monitoring, and penalties. Urban planners must ensure that new residential developments are set back from major roads and that sound-insulating materials are used in construction. The judiciary must make noise ordinances meaningful by imposing real penalties. Education campaigns directed at drivers, construction companies, and event organisers can shift behavioural norms over time. Sound pollution can be controlled; what is needed is the will to treat it as seriously as it deserves to be treated.

Sound Pollution Paragraph (800 Words)

Introduction

Sound pollution, also known as noise pollution, is a form of environmental contamination in which the acoustic environment of a place is degraded by excessive, unwanted, or harmful sound. Unlike chemical pollutants that can be analysed in a laboratory, sound pollution is transient — it exists only while the sound source is active — but its effects on the human body and mind accumulate over time and can cause lasting damage. Sound pollution has been documented as a cause of hearing loss, cardiovascular disease, sleep disorders, cognitive impairment, and psychological stress, making it a genuine public health concern alongside more visible forms of pollution.

In Bangladesh, sound pollution has grown with the country's cities. As urbanisation has accelerated and the number of motor vehicles on roads has multiplied, the acoustic environment of cities like Dhaka, Chittagong, and Narayanganj has deteriorated sharply. Studies by the Bangladesh Environment Conservation Department and independent researchers have recorded noise levels of 80 to 100 decibels at major intersections during rush hours — well into the range at which prolonged exposure causes hearing damage. The problem is not limited to roads: construction sites, factories, loudspeakers, and festivals all contribute to a cacophony that permeates almost every urban neighbourhood.

Sources of Sound Pollution

Vehicular traffic is the dominant source of sound pollution in Bangladeshi cities. The country's motor vehicle fleet has grown enormously over the past two decades, and road infrastructure has not kept pace, resulting in chronic congestion in major cities. In stop-and-go traffic, drivers use horns almost continuously — to warn pedestrians, signal overtaking manoeuvres, express impatience, or simply assert presence in a crowded road space. This cultural norm of horn use transforms city streets into acoustic battlefields. Hydraulic and multi-tone horns, which are technically prohibited under the Noise Pollution (Control) Rules 2006 for exceeding permissible sound levels, are nevertheless widely available and commonly fitted to buses and heavy trucks, producing blasts that can exceed 110 decibels at close range.

Construction noise is the second major source. Bangladesh is in the midst of an unprecedented urban construction boom: high-rise residential buildings, commercial complexes, elevated roads, metro rail structures, and industrial facilities are being built simultaneously across every major city. The activities involved — pile driving, rock drilling, concrete breaking, steel cutting, and the operation of heavy equipment — produce intense noise that travels long distances and penetrates building envelopes with ease. Construction often continues beyond the hours specified in the relevant rules, particularly where enforcement is absent.

Industrial noise affects communities located near factories and manufacturing zones. The textile, garment, jute, steel, and food-processing industries all operate machinery that generates significant noise: looms, generators, compressors, metal presses, and grinding equipment. In areas where industrial and residential land uses are intermixed — common in older urban neighbourhoods — nearby residents may be exposed to factory noise for twelve or more hours a day. Loudspeakers represent a fourth pervasive source: commercial advertising, political campaigns, religious calls to prayer, and festival celebrations all involve amplified sound, and the volume levels commonly used in these contexts far exceed what is necessary and appropriate in an urban residential environment.

Effects on Human Health

The most direct health consequence of sound pollution is noise-induced hearing loss (NIHL). Sound at 85 decibels or above, sustained over long periods, gradually destroys the hair cells of the cochlea in the inner ear. These cells do not regenerate; their loss is permanent. Workers in noisy industries — textile mills, metal workshops, construction sites — are at the highest occupational risk, but urban residents exposed to traffic noise over many years also suffer measurable hearing deterioration. Studies conducted in Dhaka have found elevated rates of hearing impairment among traffic police officers, who are exposed to horn noise for their entire working day.

Beyond hearing loss, sound pollution has cardiovascular consequences. The body responds to noise as a stressor, releasing cortisol and adrenaline, elevating heart rate, and constricting blood vessels. When this stress response is chronic — as it is for someone living next to a busy road — it contributes to persistently elevated blood pressure and an increased risk of heart attack and stroke. These associations have been demonstrated in epidemiological studies across multiple countries and are now well accepted by the scientific and medical community.

Sleep disruption is another significant pathway through which noise harms health. Traffic noise, and especially the sudden impulse sounds of horns and firecrackers, disrupts sleep architecture by reducing the proportion of deep, restorative sleep stages. Chronically sleep-deprived individuals suffer from impaired immune function, reduced cognitive performance, emotional dysregulation, and a higher risk of depression and anxiety. Children are particularly vulnerable: research shows that children who attend schools near busy roads perform significantly worse on tests of memory, reading comprehension, and mathematical reasoning than children in quieter environments.

Remedies

Reducing sound pollution in Bangladesh requires a combination of regulatory enforcement, infrastructure investment, and cultural change. The Noise Pollution (Control) Rules 2006 already provide the legal framework: they specify maximum permissible noise levels in different zones (silent, residential, mixed, commercial, industrial), prohibit hydraulic and multi-tone horns, and designate silence zones around hospitals, schools, and courts. The problem is that enforcement of these rules has been minimal. Strengthening enforcement must therefore be the first priority: traffic police must be equipped and mandated to ticket horn violations; construction companies must comply with permitted working hours; and factories near residential areas must install noise barriers or face penalties.

Urban design can also reduce noise exposure. Sound barriers along major highways — walls, earth berms, or dense vegetation strips — attenuate traffic noise before it reaches adjacent buildings. New residential and school buildings near roads must meet sound insulation standards. Zoning regulations must prevent industrial facilities from being established next to homes and schools. Expanding public transport reduces the total number of vehicles on roads and, with modern electric buses and trains, can reduce noise as well as air pollution simultaneously. Cultural change — shifting the norm away from compulsive horn use — requires sustained public awareness campaigns, possibly combined with visible enforcement actions that demonstrate real consequences for noise rule violations. Sound pollution is ultimately a solvable problem: it requires commitment to treating the acoustic environment as a shared public good deserving of protection.

Conclusion

Sound pollution is the least visible but not the least serious of Bangladesh's environmental challenges. Its effects accumulate silently: a child's hearing gradually worsens; a commuter's blood pressure slowly rises; a student's concentration subtly degrades. These harms rarely appear in a single dramatic event, so they are easy to dismiss or ignore. But they are real, they are measurable, and they are preventable. Bangladesh has the legal tools to address sound pollution. It needs the political will to enforce them, the technical capacity to implement quieter infrastructure, and the public engagement to shift the behavioural norms that turn every city street into an acoustic assault course. Quieter cities are not a luxury; they are a component of health, dignity, and well-being to which every citizen is entitled.

Sound Pollution Paragraph (1000 Words)

Introduction

Sound pollution, commonly called noise pollution, is defined as the presence of unwanted, excessive, or harmful sound in the environment at intensities and durations that degrade the quality of life and impair the health of humans and other living beings. Sound is measured in decibels (dB), a logarithmic scale: the threshold of human hearing is around 0 dB; a normal conversation is approximately 60 dB; busy traffic noise is typically 70 to 85 dB; and a pneumatic drill or hydraulic bus horn at close range can exceed 100 dB. The World Health Organization and environmental health authorities recommend that sustained residential noise should not exceed 55 dB during the day and 45 dB at night. Exposure above 85 dB over extended periods causes irreversible damage to the sensory cells of the inner ear.

Sound pollution has risen dramatically as an environmental health concern in the twentieth and twenty-first centuries, driven by the spread of mechanised transport, heavy industry, and amplification technology. In rapidly urbanising countries, the problem is especially severe because the density of noise sources is high, green buffers are scarce, and regulatory enforcement tends to lag behind the pace of urban growth. Bangladesh falls squarely into this pattern. Its cities — Dhaka in particular — are among the noisiest in the world by documented measurement. The daily acoustic environment encountered by millions of Bangladeshi city dwellers exceeds safe limits by a wide margin, with serious and growing consequences for public health.

Sources and Causes

Vehicular traffic is overwhelmingly the dominant source of sound pollution in Bangladeshi cities. The motor vehicle fleet has grown exponentially over the past two decades: motorcycles, auto-rickshaws (CNGs), private cars, microbuses, buses, and heavy trucks all share the same congested roads. In the stop-and-go traffic that characterises Dhaka and other major cities, drivers use their horns almost continuously. This habit is deeply ingrained: horns are used not as emergency signals but as a general-purpose communication tool, sounded to announce approach, request right of way, express frustration, or simply participate in the ambient noise of the road. The result is a virtually unbroken wall of sound on busy streets throughout the day. Hydraulic and multi-tone horns — which can produce sounds exceeding 110 decibels at the emitting vehicle — are prohibited under the Noise Pollution (Control) Rules 2006 but remain widely available and commonly installed on commercial vehicles.

Construction noise is the second major contributor. Bangladesh is experiencing one of the most intense urban construction booms in its history: high-rise residential towers, shopping malls, elevated roads, metro rail infrastructure, flyovers, and industrial estates are being built simultaneously in every major city. The construction processes involved — hydraulic pile driving, pneumatic rock drilling, concrete breaking with jackhammers, steel cutting with angle grinders, and the movement of heavy machinery — produce intense noise that can reach 95 dB or more at close range and carry hundreds of metres beyond the site boundary. Construction work frequently continues beyond permitted hours, particularly during critical phases of a project, because enforcement by municipal authorities is rare.

Industrial noise is a chronic problem in areas where factories and residences are intermixed — a situation common in older industrial towns like Narayanganj and Gazipur, and in parts of Dhaka where small workshops occupy ground floors of residential buildings. Textile looms, metal presses, generators, air compressors, and cooling towers all generate sustained mechanical noise that can exceed safe levels for workers and residents in adjacent buildings. Occupational noise in industrial workplaces is regulated by the Factories Act, but compliance monitoring is weak and workers often lack proper hearing protection.

Loudspeakers and amplification devices represent a fourth major source of noise pollution in Bangladesh. They are used pervasively for commercial advertising — shops broadcast music and promotional messages at high volume to attract customers — as well as for political rallies, religious events, festival celebrations, wedding ceremonies, and public announcements. The volume levels commonly used in these contexts — often 80 to 95 dB — are far above what is necessary to reach the intended audience and well beyond what is appropriate in a dense residential neighbourhood. Firecrackers set off during Eid, Diwali, and other celebrations produce sudden, intense impulse noise events that can cause immediate, acute hearing trauma in addition to frightening children and disturbing animals.

Effects on Health and Quality of Life

The health consequences of sound pollution are diverse, cumulative, and serious. The most direct and well-documented effect is noise-induced hearing loss (NIHL). The cochlea — the sensory organ of the inner ear — contains hair cells that convert sound waves into nerve signals. Sustained exposure to sounds above 85 dB progressively destroys these hair cells, which cannot regenerate. The result is a gradual, permanent reduction in hearing sensitivity, first affecting high-frequency sounds and later spreading to speech frequencies. NIHL is painless and occurs so gradually that sufferers often do not notice it until significant damage has occurred. Traffic police, factory workers, construction labourers, and street vendors — occupational groups with very high daily noise exposure — are at particular risk, but urban residents more generally are affected by years of ambient traffic noise.

Sound pollution has well-documented cardiovascular effects. Noise activates the body's autonomic stress response, triggering the release of cortisol and adrenaline, raising heart rate, and constricting peripheral blood vessels. When this response becomes chronic — as it is for someone living next to a major road — it contributes to sustained elevation of blood pressure, a leading risk factor for coronary heart disease, heart attack, and stroke. Large epidemiological studies conducted in European countries have quantified these associations and found statistically significant increases in cardiovascular mortality among populations living in high noise zones. While comparable large-scale studies are less available for Bangladesh, the biological mechanisms are universal.

Sleep disruption is the third major pathway through which noise harms health. Traffic noise, particularly the sudden impulsive sounds of horns and heavy vehicles, disrupts sleep continuity by causing micro-arousals that prevent the deep, restorative stages of sleep from being maintained. People who do not sleep adequately show impaired immune function, reduced cognitive performance, emotional lability, and over time, a higher risk of depression, anxiety, and metabolic disorders including obesity and type 2 diabetes. Children are particularly vulnerable to the educational consequences of sleep disruption and daytime noise: research conducted near airports and busy roads consistently shows lower scores in reading, memory, and problem-solving among children exposed to chronic noise compared to peers in quieter environments. For students preparing for JSC, SSC, or HSC examinations in noisy households or schools near busy roads, the cognitive penalties of sound pollution are directly relevant to their academic outcomes.

Remedies and Legal Framework

Bangladesh already possesses a legal framework for controlling sound pollution. The Noise Pollution (Control) Rules 2006 establish permissible noise limits for five designated zones: silent zones (45 dB day / 35 dB night), residential zones (50 dB / 40 dB), mixed zones (60 dB / 50 dB), commercial zones (70 dB / 60 dB), and industrial zones (75 dB / 70 dB). The rules prohibit hydraulic and multi-tone horns, restrict construction noise to daytime hours, and designate hospitals, educational institutions, and courts as silence zones. The Department of Environment is empowered to enforce these rules, and violations can attract fines or imprisonment.

In practice, enforcement has been almost entirely absent, and the gap between the law on paper and the reality on the street is vast. Closing this gap requires several interconnected measures. First, traffic police must be equipped with calibrated sound level meters and mandated to issue fines for horn violations, particularly the use of prohibited hydraulic horns. Second, construction companies must register their project timelines with municipal authorities, agree to noise management plans, and be subject to unannounced noise monitoring visits. Third, industrial facilities in or near residential areas must install noise barriers — solid walls, earth berms, or dense plantings of trees — and ensure that generators and compressors are fitted with sound-attenuating enclosures. Fourth, loudspeaker use must be regulated through a permit system: events using amplification in residential areas must obtain advance approval and must not exceed specified decibel limits, monitored by spot checks.

Infrastructure and urban design offer complementary tools. Electric vehicles — cars, buses, and auto-rickshaws — are inherently quieter than internal combustion engines and their spread will progressively reduce traffic noise. Sound barrier walls along elevated highways are already in use in other South Asian cities and can be introduced in Bangladesh along the most noise-affected corridors. Green buffers — rows of dense-canopy trees and shrubs — attenuate noise while also reducing air pollution and urban heat. New residential and school buildings near roads should be required to meet minimum sound insulation standards in their construction materials and window specifications.

Public education is an indispensable complement to regulation. Many drivers in Bangladesh are unaware that compulsive horn use is harmful to health, or that it is illegal in specific contexts. Awareness campaigns — through television, radio, social media, and school curricula — can shift cultural norms over time. The framing of sound pollution as a health issue rather than merely an inconvenience helps build the broad public support that effective enforcement requires. When communities understand that excessive noise is reducing their children's learning ability and raising their own risk of heart disease, they become allies of noise control rather than passive sufferers.

Conclusion

Sound pollution is the quietest and most invisible of Bangladesh's environmental challenges — a problem that harms millions every day without generating the dramatic visual evidence of a polluted river or a smoggy skyline. Its cumulative effects on hearing, cardiovascular health, sleep, and learning are no less real for being gradual and hidden. The good news is that sound pollution is among the most technically tractable of environmental problems: unlike chemical contamination that may persist in soil for decades, noise disappears the moment its source stops. Bangladesh has the legal framework and the technical knowledge to substantially reduce noise pollution. What it requires is the political commitment to enforce its own rules, the investment in infrastructure that reduces noise at source, and the public engagement to change the behavioural norms that make its cities unnecessarily loud. Quieter cities are healthier cities, and their citizens are more productive, more rested, and more able to enjoy the quality of life they deserve. The pursuit of a quieter Bangladesh is not a minor amenity issue; it is a serious public health imperative.