A quarterback walks to the line of scrimmage.
More than 60,000 fans rise to their feet.
The crowd gets louder. The quarterback tries to communicate with teammates, but voices disappear into the roar. Players switch to hand signals. Coaches adjust. The entire stadium suddenly feels like part of the competition.
What students hear as “crowd noise” is actually a complex STEM system.
Sound is being generated, transmitted, reflected, absorbed, measured, amplified, and redirected around the stadium. Architects shape the environment. Acoustical engineers study how sound moves through it. Audio engineers design speaker systems. Scientists measure sound levels. Teams change communication strategies based on what players can—or cannot—hear.
Sports acoustics gives educators a fresh way to turn something students experience every day into a science and engineering investigation.
At STEM Sports®, we believe STEM becomes more meaningful when students can experience concepts instead of only reading about them. Our ebook highlights critical thinking, problem-solving, creativity, teamwork, and collaboration as important outcomes of STEM education. Sound gives students another opportunity to build those skills through an environment many of them already understand: sports.
And one of the newest stadiums in professional football offers a perfect real-world example.
On August 8, 2026, fans entered the new Highmark Stadium for the Buffalo Bills’ first public practice in their new home. The stadium’s first regular-season game is scheduled for September 17 against the Detroit Lions.
Long before fans arrived, engineers were thinking about what those fans would hear.
The Bills installed 32 speaker arrays around the stadium. Each array includes five subwoofers and nine loudspeakers mounted approximately 191 feet above the stadium, distributing audio from high above the seating bowl. The team has also described the stadium’s acoustic system as capable of targeting sound toward specific areas.
Even the building itself influences sound. Engineering studies for the stadium noted that the canopy, higher seating structures, and video-board placement help contain sound within the venue, while the distributed audio system allows more speakers to operate closer to listeners rather than relying on a smaller number of extremely powerful sources.
For students, this creates a fascinating question:
How can the shape and materials of a building change something we cannot see?
That question is the beginning of an acoustics lesson.
Students hear sounds all day, but they may not think about what is actually happening.
Sound begins with vibration. That vibration transfers energy through a medium such as air. Air molecules move back and forth around their resting positions, passing energy along as a wave until the vibration eventually reaches the ear. Frequency describes how many vibrations occur each second and is measured in hertz.
Sports provide countless examples.
A basketball strikes the hardwood.
A tennis racket hits a ball.
A referee’s whistle sounds.
A crowd claps.
A hockey puck hits the boards.
Each event creates vibrations. But they do not all sound the same because the source, materials, frequency, amplitude, surrounding surfaces, and environment differ.
That means a basketball gym can become a sound laboratory without changing what students are already doing.
Sound waves do not simply travel away from a source and disappear.
When waves encounter surfaces, some energy can be reflected. In enclosed spaces, reflected sound can arrive after the original sound, creating reverberation or, with a long enough delay, an echo. Softer materials generally absorb more sound energy, while hard surfaces tend to produce stronger reflections.
Now look at a stadium through that lens.
Concrete.
Steel.
Glass.
Roof canopies.
Seating decks.
Open areas.
Fabric.
Thousands of people.
Every surface becomes part of the acoustic environment.
That is why two stadiums with similar capacities can sound dramatically different. Architects and acoustical engineers are not simply deciding where seats go. They are designing spaces where sound behaves in particular ways.
This is an ideal example of integrated STEM because students must combine physics with engineering design. The science explains how waves behave. Engineering asks how that knowledge can be used to solve a problem.
Recommended grades: K–5
STEM focus: vibrations, waves, energy transfer
Stretch a Slinky across the floor between two students and gently compress several coils at one end. When released, students can watch the compression travel along the Slinky.
The coils do not travel from one student to the other. Instead, energy moves through the system as sections of the Slinky compress and expand. Science World uses this same model to demonstrate how energy moves through a sound wave.
Then connect the model to sports.
Ask students to imagine a fan clapping in the stands. The fan’s hands create a vibration, which creates changes in the surrounding air. Those changes travel toward another person’s ears.
Students can then identify other sports-related vibration sources: bouncing balls, whistles, shoes hitting a court, bats striking balls, or crowds cheering.
The activity takes something invisible and gives students a physical model they can see.
Recommended grades: 4–8
STEM focus: measurement, data collection, graphing, spatial reasoning
Instead of trying to make a classroom or gym louder, investigate the sounds that already exist.
Using a teacher-operated sound-level meter or school-approved measurement tool, record ordinary ambient sound at several locations such as the classroom, hallway, gym entrance, center court, cafeteria, or playground.
Students can create a simple map and record the measured sound level at each point.
Then ask:
Why are some spaces louder than others?
Do hard surfaces appear to influence the results?
Does distance from the sound source matter?
How does the number of people in the space change the measurement?
Older students can graph the values, calculate averages, compare differences, or create a heat map.
The lesson also introduces an unusual mathematical concept: decibels use a logarithmic scale. NIOSH explains that a sound measured 10 decibels higher represents ten times greater sound intensity rather than simply “10 more units.”
That makes the decibel scale a real-world introduction to mathematics students may otherwise encounter much later.
Sports acoustics gives teachers another important opportunity: helping students understand that louder is not always better.
The National Institute on Deafness and Other Communication Disorders reports that sporting events commonly reach approximately 94–110 dBA. It also notes that repeated or prolonged exposure at or above 85 dBA can contribute to noise-induced hearing loss, with risk depending on how loud the sound is, how close a person is to it, and how long exposure continues.
NIOSH similarly emphasizes that hearing risk depends on level, duration, and frequency of exposure, not a single decibel reading alone.
That provides an authentic science discussion without requiring students to expose themselves to loud sound. Classroom investigations should use ordinary, comfortable sound levels rather than shouting contests, whistles, amplified crowd simulations, or other high-volume activities.
Students can instead analyze provided data.
Which is more important: sound level or duration?
The scientific answer is that both matter.
That is another reminder that STEM problems are rarely explained by only one variable.
Recommended grades: 3–8
STEM focus: engineering design, reflection, absorption, testing and iteration
Give student teams a cardboard box or other simple model representing a stadium.
Provide several materials such as cardboard, felt, craft foam, paper, fabric, and plastic.
Place a small speaker or phone at a consistent, comfortable volume in the same location during every test. Students change the materials lining portions of the model and use a sound-level meter placed at a fixed location to compare results.
Their engineering challenge might be:
Design a stadium section that reduces reflected sound in one area while preserving clear audio near the seats.
Students should sketch the first design, make a prediction, conduct repeated trials, record their data, and redesign.
This mimics the engineering process used in real buildings.
More importantly, it demonstrates that engineering decisions involve trade-offs. A material that absorbs sound might improve speech clarity in one space but reduce excitement in another. A hard surface might create more reflection but also more reverberation.
There may not be one perfect design.
There may be several solutions worth testing.
Recommended grades: 3–8
STEM focus: measurement, variables, data visualization
Place a speaker at a low, consistent volume.
Mark several measurement points moving away from it—for example, one, two, three, and four meters.
Students predict what the sound-level readings will do as distance increases.
Then test.
Results may not be perfectly smooth because classroom walls, floors, furniture, and people all influence reflections. That imperfection is valuable.
Ask students why the data might not match their original prediction perfectly.
Was every measurement taken at exactly the same height?
Did someone move?
Did a wall reflect sound?
Was another sound happening nearby?
This is how students begin learning that real scientific data is messy—and that scientists must think carefully about experimental design before drawing conclusions.
The STEM Sports ebook encourages simple sports-science investigations in which students measure real variables and discuss what influences the results rather than treating STEM as something that exists only on a worksheet.
Hands-on investigation is already central to the experiences STEM Sports educators describe.
At F.K. White Middle School, Sandra Hayes found that giving students opportunities to get outside, interact with materials, and learn through sports created exceptionally high engagement. Her students became so invested that they regularly protested when the class timer indicated the lesson was ending, and some carried that STEM interest into robotics programs.
Lisa Longino has seen similar results in East Cleveland. Her case study reports improvements in math performance, reading comprehension, attendance, engagement, and behavior as students used sports to explore concepts such as velocity and heart rate. Just as importantly, students began recognizing that sports careers extend beyond athletes to statisticians, sports scientists, trainers, physicians, and other STEM professionals.
Sound and acoustics can create the same kind of discovery.
A student who has never thought twice about the echo inside a gym may suddenly start wondering why it exists.
That question is STEM.
STEM Football is a particularly natural fit. The curriculum already includes modules exploring in-game communication technology and engineering better gameplay communication, along with energy, motion, helmet engineering, field measurement, and data analysis. An acoustics extension allows students to explore the physical environment through which those communications must travel.
STEM Multi-Sport also provides useful entry points because students move between football, basketball, soccer, and volleyball investigations. Educators could compare how acoustics change between an outdoor football field, an enclosed basketball gym, or a volleyball court.
STEM Basketball creates another easy connection. Students can compare the sound of a bouncing basketball across materials while investigating what those sounds reveal—and do not reveal—about energy transfer and surface behavior.
This topic also complements two existing STEM Sports blogs without repeating them. Signals, Systems & Teamwork examines the information being transmitted between coaches and players; sports acoustics examines the physical wave carrying audible information through the environment. From Field to Framework looks at the broader engineering of facilities; acoustics lets students zoom in on one specialized engineering system inside those spaces.
A stadium full of sound depends on people whose names rarely appear on the scoreboard.
Sports acoustics can introduce students to careers including acoustical engineer, audio systems engineer, architect, broadcast engineer, signal-processing engineer, audiologist, sound technician, noise-control engineer, electrical engineer, and AV systems designer.
That career connection matters. The STEM Sports ebook reminds educators that professional athletics is only one pathway for students who love sports; STEM-related careers offer countless other ways to build a future around the games they enjoy.
Sandra Hayes makes the same point with her students: athletes depend on people who build stadiums, operate scoreboards, support player health, and manage countless other systems around the game.
An acoustics lesson helps add another career to that list.
The student who asks, “Why is this stadium so loud?” may someday become the engineer who designs the answer.
Sports are filled with things students can see.
Balls move.
Players run.
Scoreboards change.
But some of the most interesting STEM is invisible.
Sound moves through the air. It reflects from concrete. It is absorbed by softer materials. Engineers measure it, model it, direct it, amplify it, and control it.
A new stadium like Highmark gives students a dramatic real-world example, but educators do not need a professional football venue to teach the lesson.
A classroom works.
A gym works.
A basketball bounce works.
A cardboard stadium works.
All students need is the opportunity to measure, question, test, redesign, and listen differently.
Because once students understand the STEM behind sound, the roar of a stadium is no longer just noise.
It is physics in motion.
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