Silent Pod's multi-layer soundproofing structure: No noise can hide

Prevalence of noise problems and the need to solve them

In modern society, noise pollution has become a common and increasingly serious problem. With the acceleration of urbanization, the increase in population density, the increase in the number of vehicles, and the spread of various industrial and living noises, noise has penetrated into every corner of our lives and work. Especially in office environments and urban residential areas, the troubles caused by noise have become increasingly prominent and have become an important factor affecting people's health, work efficiency and quality of life.

Prevalence of noise pollution
On the streets of the city, the roar of engines from cars, motorcycles and public transportation, the roar of machinery on construction sites, and the noisy voices in public places such as shopping malls, restaurants, and bars... These sounds are constantly superimposed, forming a noisy environment. According to a report by the World Health Organization, continuous noise pollution not only interferes with people's daily lives, but may also cause hearing loss, sleep disorders, cardiovascular diseases and other health problems.

Especially in office environments, noise pollution should not be ignored. Although the open office design promotes teamwork, it also brings greater noise interference. The ringing of the phone, the sound of colleagues talking, the sound of printers and office equipment can all become sources of interference that affect concentration. A study shows that noise interference can significantly reduce employees' work efficiency, increase stress levels, and even cause mood swings and fatigue.

Urgent need for quiet space
Faced with the trouble of noise, people's demand for quiet space is getting stronger and stronger. A quiet environment is not only a guarantee for improving work efficiency, but also a necessary condition for maintaining mental health. Studies have found that a quiet environment helps improve concentration, creativity and information processing ability. Sufficient quiet time can reduce stress, help people restore energy and improve overall happiness.
Whether in an office building, library, or at home, creating a private space that effectively isolates noise has become a rigid need in modern life. Especially for people who need to think deeply, concentrate or conduct important telephone conferences, a quiet and comfortable space is particularly important.

Limitations of traditional sound insulation methods
Faced with noise problems, traditional sound insulation measures mainly rely on the thickness of building materials and the adjustment of spatial layout. For example, using heavy walls, double-glazed windows, soundproof doors and other means, or adding indoor soft decorations such as carpets and curtains to absorb noise. However, these methods often require a large space and high cost, and the renovation process is complicated and may not be suitable for all environments.

In an open office environment, it is unrealistic to completely rely on building sound insulation to eliminate noise. Employees often need to share work areas in a limited space, and noise interference is everywhere. Simply relying on wearing headphones or using white noise machines cannot completely solve the problem, let alone provide a completely private environment.

The emergence of Silent Pod as a new solution
Against this background, the emergence of Silent Pod provides people with an innovative and efficient sound insulation solution. Silent Pod is a specially designed silent cabin with a multi-layer sound insulation structure that can effectively block external noise and create a quiet, private and comfortable space for users.

The design concept of Silent Pod is based on scientific acoustic principles. Through the multi-layer superposition of composite materials, extremely high sound insulation effect is achieved. It is not only suitable for various office environments, but also for schools, libraries, medical institutions and families. Users can work, study and rest in Silent Pod with peace of mind, away from external noise interference.

More importantly, Silent Pod takes into account both the need for sound insulation and ventilation, and is equipped with a low-noise ventilation system to ensure air circulation without destroying the silent effect. This design greatly improves the user experience and makes it possible to work or rest in the cabin for a long time.

Silent Pod Overview

In today's fast-paced and high-noise living environment, it is particularly important to find a quiet and private space. Whether it is office, study, meeting, meditation, or relaxation, people are eager to have an environment that can effectively isolate external noise interference. Silent Pod is an innovative product born under this demand background, dedicated to creating an efficient soundproof and comfortable private space for users.

Design Concept of Silent Pod
The core of Silent Pod's design is the perfect combination of "soundproof + privacy + comfort". It is not just a simple soundproof hut, but a set of carefully designed acoustic partition systems, designed to make noise nowhere to hide, and truly realize the vision of a quiet space.
From material selection, structural design to detail processing, the design team closely follows the two core goals of sound insulation effect and user experience. Silent Pod uses a composite application of multiple layers of sound insulation materials to block external noise to the maximum extent, while the internal environment considers ergonomic design to ensure that users get the most comfortable experience when using it. Whether it is long-term work or short rest, Silent Pod can provide ideal environmental support.

Wide applicability of multi-scenario applications
Silent Pod is suitable for a variety of usage scenarios. The first is the office environment. Modern office spaces, especially open offices, are plagued by noise problems, which seriously affect employees' concentration and work efficiency. Silent Pod provides employees with a small space where they can temporarily "take shelter", allowing them to stay away from noisy environments when needed, concentrate on important tasks, or hold conference calls to ensure the quality of communication.

The second is the learning place. Whether students are in the school library, at home or in the study room, they need a quiet environment to improve their learning efficiency. With its excellent sound insulation performance, Silent Pod provides learners with a space with almost no noise interference, helping them to better concentrate and absorb knowledge.

In addition, Silent Pod is also suitable for meditation and relaxation. Modern life is fast-paced and stressful, and more and more people choose to relieve stress through meditation, yoga and other methods. A quiet environment is the basis of meditation, and Silent Pod has become an ideal place for meditation, helping users achieve physical and mental balance.

Silent Pod's core advantage: multi-layer sound insulation structure design
Silent Pod's most significant advantage lies in its unique multi-layer sound insulation structure design. The realization of sound insulation depends on the selection of materials and the scientific combination of structures. Silent Pod's wall adopts a 51 mm thick composite structure, including polyester acoustic wall lining, plywood, sound acoustic foam, and a powder-coated sheet steel exterior. These materials perform their respective functions and block noise transmission layer by layer.

Polyester acoustic wall lining: This layer of material has excellent sound absorption ability, which can effectively absorb high-frequency noise and reduce sound wave reflection. Its soft fiber structure dissipates sound wave energy layer by layer, thereby reducing sound intensity.
Plywood: As a structural support layer, wooden plywood not only ensures the firmness of the wall, but also helps to block the penetration of medium and low-frequency sounds through its dense structure.

Sound acoustic foam: This is a specially designed porous material that can absorb and attenuate noise in various frequency bands, especially for low-frequency noise. It effectively reduces the resonance and reflection of sound and keeps the cabin quiet.
Powder-coated sheet steel exterior: The outer steel sheet provides solid protection and acts as a high-density barrier to effectively block the entry of external noise, extend the service life of the cabin, and improve durability.

10 mm thick safety glass is also an important part of sound insulation. It not only ensures the safety of users, but also achieves good sound insulation through its thickness and multi-layer structure to prevent sound from leaking from the glass part.

The scientific principle of multi-layer sound insulation structure

The propagation of noise is essentially the transmission of sound waves, and the key to effectively blocking these sound waves lies in the selection of materials and the design of structures. Silent Pod forms a composite sound insulation system through the combination of multiple layers of different materials, which effectively suppresses noise of different frequencies and achieves sound insulation effect.

Basic principles of noise propagation
Sound waves are mechanical waves that propagate through the vibration of media (such as air, solids, etc.). The frequency range of noise is very wide, ranging from low-frequency roars to high-frequency sharp sounds. Sound propagation characteristics of different frequencies are different. Low-frequency sounds have strong penetration and are more difficult to block; while high-frequency sounds are more easily absorbed and scattered. An efficient sound insulation structure must design appropriate blocking and absorption mechanisms for sounds of different frequency bands.

Advantages of multi-layer structure
A single material can usually only effectively block noise in a specific frequency range, or it is easy to reflect and resonate sound waves, resulting in limited sound insulation effect. The multi-layer sound insulation structure achieves multi-band and multi-path noise attenuation through the superposition of materials of different properties, greatly enhancing the overall sound insulation performance.
In Silent Pod, the soundproof wall adopts a 51mm thick composite structure composed of multiple materials, mainly polyester acoustic lining, wooden plywood, acoustic foam and steel plate shell. Each layer has a specific soundproofing function, working together to form a solid "acoustic defense line".

Soundproofing function of each layer of material and its frequency band
1. Polyester acoustic wall lining: absorption of high-frequency sound
Polyester acoustic wall lining is a soft material with a porous fiber structure, which is full of small gaps inside, which can effectively capture sound waves, especially high-frequency sounds. When high-frequency sound waves enter this layer of material, the sound wave energy is scattered and dissipated between the fibers, converted into trace heat energy, thereby greatly reducing the sound intensity. Since high-frequency noise is more common in daily life, such as keyboard tapping and human screaming, polyester lining is essential to enhance the overall sense of quietness.

2. Plywood: Blocking and structural support of mid- and low-frequency sounds
As the core structural layer of the soundproof wall, plywood has a solid texture and moderate density, and is effective in blocking mid- and low-frequency noise. Mid- and low-frequency sounds, such as mechanical vibrations and car engine sounds, often have strong penetration and propagation distance. The quality and thickness of wooden plywood can effectively reflect and block these low-frequency sound waves and prevent them from entering the cabin. At the same time, the plywood ensures the stability and durability of the overall structure and is an important part of the multi-layer sound insulation system.

3. Sound acoustic foam: Absorption and attenuation of multi-band noise
Sound acoustic foam is a specially designed porous material with a complex internal structure that can scatter and absorb sound waves. Compared with polyester lining, acoustic foam is more effective in handling mid- and low-frequency and mixed-frequency sounds. It can reduce the reflection and resonance of sound waves and prevent sound from bouncing back and forth inside the cabin to produce echoes. Its porous structure helps absorb sound wave energy and significantly reduces the overall noise level. The addition of acoustic foam allows the sound insulation performance of Silent Pod to cover a wider frequency range and improve the comfort of use.

4. Powder-coated sheet steel exterior: High-density barrier blocks all frequency bands
The outer steel sheet has extremely high density and rigidity, and is one of the most critical barriers to prevent noise penetration. Its weight and hardness make it difficult for sound waves to directly penetrate this layer, effectively preventing external noise from entering the cabin. At the same time, the surface of the steel sheet is treated with powder coating to improve corrosion resistance and wear resistance, ensuring long-term and stable use of the cabin. The presence of the steel sheet strengthens the sound insulation and structural strength of the overall wall, becoming the "last line of defense" of the multi-layer soundproof wall.

5. 10mm glass: The key link for both sound insulation and safety
Although it is not the main part of the wall, 10mm glass is also an indispensable part of the Silent Pod sound insulation system. The thickness and multi-layer structure of the glass determine its good sound insulation effect, which can block a large amount of high-frequency and medium-frequency noise. Compared with traditional single-layer glass, thick glass effectively reduces the transmission of noise through the glass gap. At the same time, the safety glass has good impact resistance to ensure safe use.

Multi-layer materials work together: multiple noise attenuation processes
When the noise passes through the Silent Pod wall, it is not blocked all at once, but is attenuated layer by layer in the multi-layer structure. The sound waves first enter the polyester lining, where they are absorbed and scattered by the high-frequency part; the sound waves that are not completely attenuated continue to penetrate the wooden plywood, where they are reflected and blocked; then they enter the acoustic foam layer, where they are further absorbed and dissipated; finally, they pass through the steel plate protective layer, which greatly attenuates the remaining noise. Throughout the whole process, the sound wave energy is repeatedly dispersed and absorbed, achieving multiple attenuation. This multi-layer structure also reduces the resonance and reflection of sound waves inside the material, avoiding the sound enhancement effect, thereby ensuring a quieter and more comfortable cabin environment.

51mm thick wall soundproofing effect

Silent Pod can achieve soundproofing effect, the key is that the wall adopts 51mm thick multi-layer composite structure design. This wall structure is composed of four different materials: polyester acoustic wall lining, plywood, sound acoustic foam, and a powder-coated sheet steel exterior. Each of them plays a unique role and works together to create an efficient noise isolation barrier.

Overall wall design concept
The wall thickness of 51mm is the best thickness selected by Silent Pod after scientific calculation and experimental verification. This thickness not only ensures sufficient sound insulation effect, but also takes into account the lightness and space utilization efficiency of the overall structure. The wall is superimposed with multiple layers of materials with different physical properties to achieve segmented noise blocking and absorption, greatly reducing the probability of noise entering the cabin from the outside.

polyester acoustic wall lining: the first sound absorption barrier
Polyester acoustic wall lining is the inner layer of the wall, with moderate thickness and made of high-density polyester fiber material. Its structure presents a large number of tiny pores, which can effectively capture and dissipate sound wave energy.
Sound absorption principle: When sound waves enter the polyester fiber layer, the vibration of the sound waves causes the fibers to rub against each other, resulting in a small loss of heat energy, thereby reducing the energy of the sound waves.
High-frequency absorption: This layer of material is particularly effective for high-frequency sound waves (such as sharp sounds in human voices and high-frequency mechanical noise), which can reduce the reflection and propagation of sound and prevent noise from echoing in the cabin.
Comfortable experience: The soft touch of the polyester lining improves the comfort in the cabin and makes the internal environment more pleasant.

Plywood: Structural skeleton and medium and low frequency partition
Plywood is the middle layer of the wall, with good structural strength and moderate density, and is the skeleton part of the wall.
Structural stability: Plywood provides solid support for the entire wall, ensuring that the wall will not be deformed or damaged due to long-term use, extending the service life of the Silent Pod.
Isolating medium and low frequency noise: Medium and low frequency sounds usually have longer wavelengths and strong penetration, which is a difficult point for traditional sound insulation. The dense structure of plywood can effectively reflect and prevent these low-frequency noises from penetrating.
Resonance suppression: Wood materials naturally have a certain elasticity, which can buffer the impact of sound waves on the wall and reduce the additional noise generated by the wall resonance.

Sound acoustic foam: A powerful absorber of multi-band noise
Sound acoustic foam is another key layer of the wall, with a unique porous structure, specially designed for sound wave absorption.
Porous sound-absorbing structure: The interior of sound acoustic foam is full of countless tiny holes, so that sound waves are constantly reflected and refracted during the penetration process, and the sound energy is gradually dissipated.
Reduce resonance and reflection: Foam can effectively suppress the reflection of sound waves in the cabin, avoid echoes and resonances, and keep the cabin environment quiet.
Covering a wide frequency band: Sound acoustic foam is not only effective for mid- and low-frequency, but also can absorb high-frequency noise to a certain extent, enhancing the balance of the overall sound insulation effect.

Powder-coated sheet steel exterior: Solid barrier and comprehensive sound insulation
The outermost layer of the wall is a powder-coated steel plate, which is the "armor" of the entire sound insulation structure.
High-density barrier: The steel plate is heavy and hard, and can effectively block almost all frequency bands of noise from entering the interior. Its high density greatly slows down the penetration speed of sound waves and reduces noise transmission.
Durability and safety: The powder coating not only improves the aesthetics of the steel plate, but also enhances its corrosion and wear resistance, allowing the Silent Pod to be used for a long time in various environments without damage.
Protecting structural integrity: The steel plate shell can also resist external physical impact and damage, protect the integrity of the inner layer of sound insulation materials, and ensure that the sound insulation effect is stable and lasting.

Material synergy: Comprehensively improve sound insulation performance
These material layers not only work individually, but also produce synergistic effects through reasonable superposition:
Sound waves attenuate layer by layer: After the sound wave enters the wall, it is first absorbed by the polyester acoustic wall lining for part of the high-frequency energy, and then reflected by the plywood to block the low and medium frequencies. Then the sound acoustic foam further consumes the residual sound wave energy, and finally the powder-coated sheet steel exterior isolates the remaining noise.
Reduce internal reflection and resonance: The soft porous structure of sound acoustic foam and polyester acoustic wall lining absorbs sound wave reflection, while the wooden plywood prevents structural resonance, which reduces the overall noise reverberation in the cabin and ensures a quiet environment.
Balanced sound insulation and lightness: Although the 51mm wall thickness does not sound heavy, the multi-material combination design ensures efficient sound insulation while keeping the wall appropriately light for easy installation and movement.

10mm safety glass has dual functions of sound insulation and protection

In the overall sound insulation design of Silent Pod, 10mm thick safety glass is not only a visually transparent window, but also a key sound insulation and protection barrier. While ensuring a good field of vision for users, it achieves efficient noise isolation and safety protection through scientific structure and material properties.

Sound insulation principle of safety glass
The sound insulation effect of soundproof glass mainly depends on the density, thickness and structural form of the material. Thicker glass can provide higher quality, making it difficult for sound waves to penetrate. Specifically:
Sound wave reflection: When sound waves encounter thick glass, most of the sound energy is reflected back due to the high density and rigidity of the glass, reducing the noise that enters the cabin through the glass.
Sound wave absorption and attenuation: The internal microstructure and multi-layer design of the glass (such as laminated glass) can absorb part of the sound wave energy and convert it into trace heat energy, further reducing sound propagation.
Frequency response: 10mm thick glass has a particularly significant effect on the isolation of medium and high frequency noise, which are often the main noise sources such as office conversations and traffic noise.
Silent Pod's 10mm safety glass makes full use of these physical properties to effectively block the invasion of environmental noise and create a quiet space.

Design challenges that take into account both sound insulation and safety
It is not easy to combine sound insulation and safety functions on a piece of glass, which involves multiple tests of material selection, process control and structural design.
Balance between thickness and weight: Although 10mm glass has excellent sound insulation and safety performance, it is thicker and heavier. The design needs to consider the stability of installation and the load-bearing capacity of the cabin structure to avoid safety hazards caused by the weight of the glass.
Optimization of sound insulation performance: By using laminated glass or multi-layer composite glass structure, both safety and sound insulation are guaranteed, but the process is complex, requiring precise manufacturing and strict testing to ensure that each piece of glass meets high standards.
Vision and aesthetics: Thick glass may affect light transmittance and visual clarity. The design team uses high-transparency materials and fine grinding processes to ensure that the cabin is well lit, the field of vision is clear and there is no color difference.
Silent Pod has achieved a win-win situation of sound insulation and safety performance of 10mm safety glass through precise material ratio and advanced production technology.

Create the best privacy and protection experience for users
In modern office and leisure environments, privacy and safety are the two most important factors for users. Silent Pod's 10mm safety glass effectively meets this demand:
Noise barrier: Thick safety glass blocks external noise, providing users with a quiet environment to help concentrate and improve work and learning efficiency.
Visual transparency and privacy balance: Transparent glass brings a bright and open visual experience, avoiding a sense of closure, while combining the cabin layout and external design to take into account visual privacy.
Worry-free protection: High-strength safety glass ensures safe use, prevents accidental breakage or external force damage, and builds a solid safety line for users.
Psychological security: Users can feel the dual protection of safety and privacy in a comfortable and quiet environment, and can devote themselves to work, communication or relaxation with more peace of mind.

Acoustic Felt: The Secret Weapon of Natural Sound Insulation

Acoustic felt plays a vital role in the multi-layer sound insulation structure of Silent Pod. It is not only an environmentally friendly and efficient sound insulation material, but also helps Silent Pod achieve a better mute effect with its unique fiber structure and natural acoustic properties.

What is acoustic felt?
Acoustic felt is a material specially used for acoustic treatment, usually made of natural fibers, synthetic fibers or a mixture of both. Unlike traditional hard sound insulation materials, acoustic felt is soft, light and has excellent sound absorption performance.
Material composition: Acoustic felt is mostly made of environmentally friendly materials such as natural wool, cotton fiber, polyester fiber, etc., with good environmental protection and recyclability.
Structural features: Acoustic felt is interwoven with a large number of irregularly distributed fibers to form a porous, multi-void three-dimensional mesh structure.
Application range: Widely used in places that require efficient acoustic treatment, such as building sound insulation, recording studios, and office partitions.

Sound absorption principle of acoustic felt
The sound insulation effect of acoustic felt mainly comes from the absorption capacity of its fiber structure to sound waves. Specifically:
Sound wave damping of fiber gaps: When sound propagates to acoustic felt, sound waves must pass through the pores formed by countless fibers interweaving. These pores cause sound waves to be continuously dispersed and refracted during propagation, and the energy of sound waves is gradually consumed and converted into trace amounts of heat energy, thereby reducing the reflection and transmission of noise.
Mechanical energy conversion of sound waves: Sound is essentially a pressure wave in the air. When sound wave vibration causes the fiber to vibrate, the friction between the fibers produces mechanical energy dissipation. This process is the key mechanism for the conversion of sound energy to heat energy, which greatly reduces the noise intensity.
Broadband sound absorption ability: Due to the random arrangement and porous structure of fibers, acoustic felt can absorb sounds in a wide frequency band, especially for mid- and high-frequency noise (such as conversation, keyboard tapping, and mechanical equipment noise). At the same time, it also has a certain mitigation effect on some low-frequency sounds.

The specific role of acoustic felt in Silent Pod
In Silent Pod, acoustic felt is reasonably placed in the key position of the multi-layer sound insulation structure to play its unique sound absorption advantages:
Reduce sound reflection: Inside the cabin, acoustic felt effectively reduces the reflection and reverberation of sound waves inside the wall, avoids echoes and noise resonance, and ensures the purity and quietness of the internal environment.
Improve overall sound insulation performance: As a soft sound-absorbing material, acoustic felt complements the hard sound insulation layer (such as steel plate, wooden plywood), making up for the defect of insufficient absorption of hard materials for mid- and high-frequency, so that noise is absorbed and blocked in layers.
Improve user comfort: The natural fiber texture of acoustic felt not only enhances the warmth inside the Silent Pod, but also reduces fatigue and stress caused by noise due to its sound absorption characteristics, enhancing the user experience.

Synergistic effect of acoustic felt and other sound insulation materials
Silent Pod's sound insulation system is a multi-material, multi-layer structure complex, and acoustic felt complements other materials:
Cooperation with polyester acoustic wall lining: The polyester lining is mainly responsible for the initial absorption of high-frequency sound waves, while the acoustic felt further absorbs the remaining sound waves, reduces reflection, and forms a double-layer sound-absorbing barrier.
Combination with plywood: Plywood, as the skeleton of the sound insulation wall, blocks low-frequency noise, and the acoustic felt absorbs the residual noise caused by reflection. The two work together to achieve a wide-band noise reduction effect.
Complementarity with sound acoustic foam: Sound acoustic foam has a strong absorption of mid- and low-frequency noise, while acoustic felt supplements mid- and high-frequency sound absorption. The combination of the two ensures that all types of frequency band noise are effectively suppressed.
Through the layered superposition and functional complementarity of these materials, Silent Pod can isolate external noise to the maximum extent and create an extremely quiet space for users.

Balance between ventilation system and noise control

In the design of Silent Pod, sound insulation is important, but good air circulation is also indispensable. In a closed and soundproof space, if there is no effective ventilation, users will feel stuffy and uncomfortable, affecting work efficiency and user experience. Therefore, the ventilation system of Silent Pod must strictly control noise interference while maintaining fresh air circulation to achieve a perfect balance of "silence and ventilation".

Importance of ventilation system
The ventilation system is a basic and critical function for any confined space, especially in personal quiet cabins such as Silent Pod. Users work, communicate or rest inside for a long time. Human breathing consumes oxygen and emits carbon dioxide and body odor. If ventilation is not smooth, it will cause turbid air, temperature rise and even hypoxia, which will affect the health and comfort of users.
Air quality assurance: The ventilation system ensures a continuous supply of fresh air, removes harmful gases, maintains fresh air in the cabin, and prevents stuffiness and suffocation.
Temperature regulation: Helps dissipate heat through air flow to avoid excessive temperature in the confined space and ensure a comfortable working environment.
Prevent moisture accumulation: Ventilation reduces humidity in the air, prevents mold growth and material damage, and extends the service life of the equipment.

Actual effect and user experience
The balance of ventilation and silence achieved by the Silent Pod ventilation system has a profound impact on the user experience:
Comfortable air circulation: Even if users stay in the cabin for a long time, they can enjoy continuous fresh air, avoid stuffiness and fatigue, and improve work and rest efficiency.
No noise interference: The noise generated by the ventilation fan is extremely low and almost imperceptible, making the entire Silent Pod internal environment pure and quiet, suitable for a variety of application scenarios such as teleconferences, focused work, and recording.
Reduce psychological burden: Users do not have to worry about the ventilation system causing noise troubles, and they are more relaxed psychologically, which naturally improves the use satisfaction.

Other auxiliary designs of the ventilation system
The Silent Pod ventilation system also incorporates a variety of auxiliary designs to further optimize the ventilation effect and silence level:
Uniform airflow distribution: The location of the vents is scientifically arranged to ensure uniform distribution of fresh air and avoid dead corners and "explosion points" where airflow noise is concentrated.
Adjustable wind speed: Users can adjust the wind speed of the ventilation fan according to their needs, which can not only quickly change the air, but also operate extremely quietly, and flexibly adapt to different usage scenarios.
Filtration system: The vents are equipped with high-efficiency air filters to block dust, pollen and pollutants from entering, ensuring the air quality in the cabin, especially for users who are sensitive to air quality.

Comparison with traditional sound insulation materials

In the field of sound insulation design, traditional sound insulation methods mostly rely on a single material, such as single-layer glass, ordinary sound insulation walls or simple sound insulation boards. Although these materials can reduce noise transmission to a certain extent, they still have many shortcomings in terms of effect, comfort and applicability. The multi-layer composite sound insulation structure adopted by Silent Pod has significantly improved the sound insulation performance through the scientific combination and optimized design of materials, creating an unprecedented quiet space for users.

Limitations of traditional sound insulation materials
1.Insufficient sound insulation of single-layer glass
In traditional office or home environments, glass windows are the most common sound insulation obstacles. Single-layer glass performs poorly in the face of multi-band noise due to its hard and thin material:
Low-frequency noise has strong penetration: such as traffic noise, industrial equipment vibration sound, etc., single-layer glass is difficult to effectively block, which is easy to cause indoor noise pollution.
Obvious vibration transmission: glass is thin and hard, and sound wave vibrations can easily penetrate the material directly and transmit noise.
No sound absorption ability: Single-layer glass only reflects sound waves and cannot absorb sound energy, causing noise to be repeatedly reflected indoors, forming echoes and reverberations.

2. Defects of ordinary soundproof walls
Ordinary soundproof walls are usually made of a single or simple material, such as a single-layer gypsum board or hollow brick wall, and have the following shortcomings:
Narrow sound insulation band: Soundproof materials have limited ability to block noise of different frequencies, and it is difficult to deal with high-frequency and low-frequency noise at the same time.
Single structure and lack of buffering: Sound energy is not absorbed by layers, and direct transmission efficiency is high.
Large volume and heavy weight: In order to achieve a certain sound insulation effect, traditional soundproof walls are thick and bulky, which is not conducive to flexible application and space utilization.

3. Sound insulation performance is difficult to take into account comfort
In addition to sound insulation, traditional materials often ignore the comprehensive consideration of air circulation, temperature regulation and environmental comfort, which can easily cause problems of closed stuffiness or air stagnation.

Innovations in Silent Pod's multi-layer composite sound insulation design
Silent Pod uses a 51mm thick sound insulation wall made of a variety of materials such as polyester acoustic lining, wooden plywood, acoustic foam, steel shell, 10mm thick safety glass and acoustic felt. This multi-layer structure breaks through the limitations of traditional single materials and has the following significant advantages:

1. Diverse materials and complementary functions
Polyester acoustic wall lining: Excellent high-frequency absorption capacity, reducing sharp noise reflection.
Plywood: Stable structure, blocking low-frequency vibration noise, and alleviating sound propagation.
Sound acoustic foam: The porous structure absorbs medium and low-frequency noise and reduces echoes.
Powder-coated sheet steel exterior: Strong and tightly sealed, blocking the invasion of external environmental noise.
10mm glass: It has both sound insulation and protection functions, blocking noise while ensuring safety.
Acoustic felt: Natural fiber sound absorption, reducing sound reflection, and improving overall comfort.

2. Broadband sound insulation effect
Multi-layer materials absorb and block noise in different frequency bands in layers, achieving full-band sound insulation for low, medium and high frequencies. This is difficult to achieve with a single material.

3. Sound energy conversion and absorption
Through the friction and porous structure of fiber materials, sound energy is effectively converted into heat energy dissipation, reducing noise propagation.

4. Compact structure, easy to install
Despite its multi-layer structure, the wall thickness of Silent Pod is only 51 mm, which is lighter and more compact than traditional sound insulation walls, and is suitable for flexible use in various environments such as office spaces and public places.