A double-side front-mounted sound system for stadium and large theater seats

Abstract

The present application relates to the technical field of architectural acoustics, in particular to a double-side front-mounted sound system for gymnasium and large theater seats, which comprises at least one set of sound units, the sound units comprising left directional sound and right directional sound; the left directional sound is installed at a preset position on the left side of the venue seats, and the right directional sound is installed at a corresponding preset position on the right side of the venue seats; the sound emitting end of the left directional sound and the sound emitting end of the right directional sound are both directed towards the front side of the venue seats and are configured to emit sound in a direction from front to back along the venue seats to form an independent closed sound field for listening at the venue seats. By mounting the left and right directional sound in front of the seats on both sides and configuring them to emit sound in a direction from front to back, and by cooperating with the sound emitting angle adjusting assembly, the ears of listeners of different heights can be accurately aligned, and an independent closed sound field for listening with high isolation and no adjacent seat crosstalk can be constructed in a single seat area.

Description

Technical Field

[0001] This invention relates to the field of architectural acoustics, specifically to a dual-front-mounted sound system for stadium and large theater seating. Background Technology

[0002] With the rapid development of various large-scale cultural and entertainment venues such as high-end cinemas, grand theaters, immersive e-sports arenas, stadiums, and modern conference centers, audiences' demands for audiovisual experiences are increasing. Traditional venue sound systems mostly adopt centralized or wall-mounted array sound reinforcement solutions, which involve centrally suspending large line array speakers from the ceiling or distributing them on the surrounding walls. However, this macroscopic sound reinforcement method is constrained by the acoustic environment of the venue space, often resulting in uneven sound field distribution, loss of sound details, and reverberation interference, making it difficult to meet the needs of modern audiences for high-fidelity, immersive listening experiences.

[0003] To address these issues, the industry has begun to explore miniaturizing audio equipment and integrating it into venue seating, such as headrest speakers or seatback speakers. While this approach brings the sound source closer to the audience, existing seat-based audio systems still suffer from several shortcomings in practical applications: Severe sound field crosstalk makes it impossible to create a private listening area. Existing in-seat audio systems mostly use traditional diffused speakers, often installed behind the headrest or on the seat back. This rear-firing or omnidirectional sound design causes sound to diffuse in all directions, easily causing sound crosstalk between adjacent seats, especially between the front and rear rows. In multilingual conferences or scenarios requiring targeted audio delivery, it is impossible to provide an independent, enclosed sound field for each individual listener.

[0004] Physical vibration transmission affects ride comfort: When playing high-dynamic-range audio, the structural vibrations generated by existing seat speakers are directly transmitted to the seat frame through rigid connections, causing mechanical resonance. This not only introduces structural noise that degrades sound quality, but also causes uncomfortable vibrations for occupants, severely impacting the experience of watching movies or holding meetings for extended periods.

[0005] Large-scale network cabling is chaotic, posing potential interference and security risks. Providing independent power and audio signal transmission for a large number of speakers in large venues is an engineering challenge. Traditional exposed wiring not only affects the aesthetics of the venue but is also highly susceptible to electromagnetic interference and background noise during long-distance transmission. Furthermore, without a unified centralized power supply management and overload protection mechanism, short circuits at some nodes can easily lead to widespread equipment damage or even fire hazards. Summary of the Invention

[0006] To address the problems in the prior art, the present invention provides a dual-front-mounted sound system for stadium and large theater seats.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a seat dual-side front-mounted audio system, including at least one set of audio units, wherein the audio units include a left-side directional speaker and a right-side directional speaker; The left-side directional speaker is installed at a preset position on the left side of the venue seat, and the right-side directional speaker is installed at a corresponding preset position on the right side of the venue seat; The sound-emitting ends of the left-side directional speaker and the right-side directional speaker are both directed toward the rear of the venue seats and configured to emit sound directionally along the venue seats from front to back, so as to form an independent closed sound field at the venue seats.

[0008] A large stadium sound system includes: multiple front-seat audio systems arranged in an array; and A sound field control module is communicatively connected to the audio units in each of the front seat audio systems and is configured to transmit audio signals to the audio units and perform sound field control.

[0009] The beneficial effects of this invention are: (1) The present invention provides a dual-sided front-mounted sound system for stadium and large theater seats. By placing left and right directional speakers on both sides of the seat and configuring them to emit sound in a directional direction from front to back, and with the sound angle adjustment component, it can accurately target the ear height of listeners of different heights, and create a highly isolated and independent closed sound field without crosstalk between adjacent seats in a single seat area. At the same time, by using acoustic damping modules and clamped shock-absorbing pads, the mechanical resonance during the operation of the speakers is effectively suppressed, and the transmission of physical vibration to the seat body is avoided. While significantly improving the auditory immersion, it ensures the comfort of the listeners.

[0010] (2) The present invention provides a dual-sided front-mounted sound system for stadium and large theater seats. Based on the array layout of large venues, the present invention supports dynamic control of the entire venue, zones and individual seats through the sound field control module, which greatly meets the personalized audio push needs of venues in complex scenarios such as multilingual conferences and zoned movie screenings. In addition, through anti-interference transmission lines and centralized power supply modules with overload protection, combined with the hidden wiring channels inside the seats, not only are the electromagnetic noise and local short circuit safety hazards of long-distance transmission effectively eliminated, but also the overall visual aesthetics and engineering maintenance convenience of the venue after large-scale networking are guaranteed. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 A schematic diagram of the overall structure of a dual-front-mounted sound system for stadium and large theater seating provided by the present invention; Figure 2 Topology diagram of a large venue sound system provided by the present invention; Figure 3 Assembly diagram of the installation position provided for this invention; Figure 4 The working logic block diagram of the sound field control module provided by the present invention. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0014] like Figures 1-4 As shown, the present invention provides a seat dual-side front-mounted audio system, which includes at least one set of audio units, including a left-side directional speaker and a right-side directional speaker; The left-side directional speaker is installed in a preset position on the left side of the venue seats, and the right-side directional speaker is installed in the corresponding preset position on the right side of the venue seats; The sound-emitting ends of both the left and right directional speakers are directed towards the rear of the venue seats and are configured to emit sound directionally from front to back along the venue seats, so as to form an independent closed sound field at the venue seats.

[0015] This design defines the basic components of a dual-sided front-mounted speaker system for the seats, including left and right directional speakers installed in preset positions on the seats with their sound-emitting ends facing the front of the seats, emitting sound directionally from front to back. Breaking away from the traditional sound amplification method of from far to near and from area to point, it adopts a dedicated, front-to-back sound-emitting logic for each seat. The directional speakers on the left and right sides act like two beams of flashlight, focusing sound waves and projecting them from in front of the body to the ear area, using the directionality of sound waves to construct a physically isolated acoustic bubble within a single seat space.

[0016] This completely solves the problems of sound attenuation, echo, and uneven sound field caused by long-distance sound propagation in large venues. Adjacent seats do not interfere with each other, and each audience member receives a highly clear and personalized listening experience, greatly enhancing the sense of immersion. In the standard auditorium of a large theater, a miniature speaker is installed on both sides of each seat. When stage performances feature vocals, the sound is emitted directly from about 0.5 meters behind the audience, providing them with direct sound rather than reverberation after reflection through walls.

[0017] As a preferred technical solution, the system also includes fixed installation components, with the left-side directional speaker and the right-side directional speaker being detachably installed on the venue seats via corresponding fixed installation components.

[0018] The speakers are detachably mounted to the venue seats using this component. Mechanical connectors such as bolts and clips replace irreversible welding or gluing, connecting the speaker units to the seat body, making the speaker module a plug-and-play independent peripheral. This significantly reduces the difficulty of installation and subsequent maintenance. It does not damage the existing seat structure; if a speaker in a particular seat malfunctions, maintenance personnel can directly disassemble and replace the individual unit without affecting the normal use of surrounding seats, reducing overall maintenance costs. Maintenance personnel can use an Allen wrench to loosen the two locking bolts on the mounting component to remove the damaged left-side directional speaker and replace it with a spare within 3 minutes, without disassembling the entire venue seat.

[0019] As a preferred technical solution, the fixed installation assembly includes a mounting bracket and shock-absorbing pads; The shape of the mounting bracket is adapted to the shape of the mounting mating surface at the preset position. The damping pad is sandwiched between the mounting bracket and the mounting mating surface to reduce the vibration transmission when the audio unit is working.

[0020] Sound is essentially a mechanical wave. When a speaker emits sound, the cabinet vibrates. Damping pads, such as rubber and silicone pads, act as elastic damping media, absorbing and dissipating these high-frequency micro-vibrations. A shape-fitting mounting bracket maximizes the force-bearing area. This cuts off the physical path of speaker vibrations to the seat frame, effectively preventing resonance and noise, and ensuring extremely high-purity sound quality. It also protects the delicate electronic components inside the speaker from external mechanical impacts. 3D scanning technology was used to obtain the curvature data of the theater seat armrests, allowing for the creation of custom-molded mounting brackets with 2mm thick flexible silicone damping pads attached to their inner sides. When playing bass-rich movie soundtracks, there is no noticeable tingling or numbing vibration in the seat armrests.

[0021] As a preferred technical solution, the venue seats include a left armrest or left side panel on the left side and a right armrest or right side panel on the right side; The mounting surfaces are located on the outer sides of the left and right armrests, or on the upper part of the left and right side panels, to align the height of the sound-emitting end with the preset ear height. The mounting surfaces are located on the outer sides of the left and right armrests, or on the upper part of the left and right side panels, to align with the ear height.

[0022] Based on ergonomic dimensions, the physical spatial coordinates of the sound source are set at a height near the level of the seated person's ear, with the X-axis located at the outer edges of both sides of the body. Sound waves are emitted at this height, reaching the auricle horizontally or at a slight angle. This ensures perfect alignment of the sound-emitting axis with the ear's receiving surface, maximizing the direct sound ratio. The sound source is installed on the outside of armrests or the upper part of side panels, without encroaching on seating space or obstructing armrests or movement. In the VIP seating area of ​​the stadium, the speaker brackets are fixed to the upper outer edge of the plastic side panels. When a spectator between 1.6 and 1.8 meters tall is seated, the speaker's sound holes are approximately at the same level as their earlobes.

[0023] As a preferred technical solution, both the left-side directional speaker and the right-side directional speaker are ultra-thin directional loudspeakers, and both are equipped with acoustic damping modules and sound angle adjustment components.

[0024] The speaker is an ultra-thin directional loudspeaker, internally equipped with an acoustic damping module and a sound angle adjustment component. The ultra-thin design is achieved through a specially designed flat magnetic circuit system; the acoustic damping module uses sound-absorbing materials to absorb backwaves from the loudspeaker, preventing sound leakage to the outside; the angle adjustment component changes the direction of the speaker's front acoustic axis via a mechanical hinge or universal ball joint structure. The ultra-thin design fits seamlessly into the compact space of the venue, without appearing obtrusive, and the damping module further narrows the sound beam, reducing crosstalk. The angle adjustment component makes the system highly adaptable, accommodating audiences of different body types and sitting postures. It uses a flat panel array loudspeaker with a thickness of only 3 cm, internally filled with high-density sound-absorbing cotton for acoustic damping. A damping pivot with a gear chuck is located at the back of the loudspeaker as the angle adjustment component.

[0025] As a preferred technical solution, the sound angle adjustment component is configured to adjust the sound angle of the left-side directional speaker and the right-side directional speaker within a range of 30° to 60°.

[0026] With the horizontal line directly in front as the 0° reference, the speaker's sound-emitting surface can only move within an inward angle of 30° to 60°. This is a meticulously calculated golden acoustic dead angle; angles smaller than 30° will direct sound towards the audience in the back rows, while angles larger than 60° will cause sound to hit the audience's faces directly, resulting in auditory pressure. This range ensures that sound waves fall precisely within the range of sound waves collected by the auricle, resulting in both clarity and naturalness. After taking their seats, audience members who prefer to lean back in their chairs can manually adjust the speaker angle to close to 60°; those who prefer to lean forward to watch the game can adjust it to around 30° to ensure the sound is always directed at them.

[0027] A large-scale stadium sound system includes: multiple front-seat audio systems arranged in an array; and The sound field control module is communicatively connected to the audio units in each front seat audio system and is configured to transmit audio signals to the audio units and perform sound field control.

[0028] The system connects isolated individual seats into a network. The central control room's sound field control module acts as the brain, distributing audio signals to thousands of seat-based speaker terminals via a communication network, creating distributed sound field coverage. This achieves a unity of macro and micro levels, replacing expensive, high-power centralized sound systems and reducing energy consumption and initial equipment investment. It fundamentally eliminates the inherent sound field blind spots and localized, deafening polarization inherent in large venues. In a 5000-seat esports arena, suspended line array speakers were replaced with this system installed on all 5000 seats. The central control console can simultaneously push game commentary signals to all seats with a single click, achieving zero latency and consistent sound pressure levels throughout the venue.

[0029] As a preferred technical solution, the sound field control module is configured to execute at least one of the following: a unified control mode for the entire field, a zone control mode, and an independent control mode for each seat. In the single-seat independent control mode, the sound field control module is configured to independently adjust the volume and sound emission angle of the audio unit in a single front seat audio system.

[0030] Based on digital audio network transmission protocols or independent IP addressing technology, the master control module can issue independent control commands to the DSP (Digital Signal Processor) of each seat terminal, enabling adjustments to volume gain, delay, and even EQ. This provides the venue with extremely high operational flexibility. It can handle various complex scenarios, such as: opening only half of the venue, requiring higher volume in VIP areas, or requiring silence for empty seats to save power and prevent interference.

[0031] As a preferred technical solution, the system also includes a signal transmission module, which includes an anti-interference transmission line; The sound field control module is wired to each front seat audio system via an anti-interference transmission line; The system also includes a centralized power supply module, which is electrically connected to each front-mounted seat audio system for unified power supply; The centralized power supply module is equipped with an overload protection unit.

[0032] Shielded cables were used to mitigate electromagnetic interference from the venue's large screens and lighting equipment. Instead of individual seats connected to 220V AC mains power, a centralized low-voltage DC power supply (e.g., 24V) was used from the main control room, coupled with fuses or electronic circuit breakers for overcurrent protection. This ensured high fidelity and zero latency in long-distance audio signal transmission. Centralized power supply and overload protection eliminated serious safety hazards such as electric shock and fire. Even with all the venue lights on, no hissing or crackling noises were detected in the seat speakers due to the use of braided aluminum foil shielding. In the event of an accidental short circuit in the cable of a seat in a row, the power supply module instantly cut off the power to that branch, preventing equipment burnout.

[0033] As a preferred technical solution, the centralized power supply module is connected to a power supply line, and wiring channels are opened inside the seats of each venue. The power supply lines are concealed within the wiring channels of the stadium seats.

[0034] The seat frames are constructed using hollow metal tubing or specially designed slotted profiles, with power and signal cables pre-embedded or threaded through them, concealing them from external exposure. This maintains the venue's high-end, clean, and aesthetically pleasing appearance; effectively prevents power outages caused by spectators kicking or stepping on cables; and also prevents malicious damage. During the venue's construction phase, underground conduits are pre-installed. When installing the seats, the cables run directly from the ground-level conduits into the hollow tubing of the seat's cast aluminum base, ascending to the armrests to connect to the speakers, leaving no visible overhead wires.

[0035] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seat-mounted dual-sided front-facing audio system, characterized in that: It includes at least one set of sound units, the sound units including a left-side directional speaker and a right-side directional speaker; The left-side directional speaker is installed at a preset position on the left side of the venue seat, and the right-side directional speaker is installed at a corresponding preset position on the right side of the venue seat; The sound-emitting ends of the left-side directional speaker and the right-side directional speaker are both directed toward the rear of the venue seats and configured to emit sound directionally along the venue seats from front to back, so as to form an independent closed sound field at the venue seats.

2. The seat-mounted dual-sided front-facing audio system according to claim 1, characterized in that: The system also includes fixed installation components, wherein the left-side directional speaker and the right-side directional speaker are detachably installed on the venue seats via the corresponding fixed installation components.

3. A seat-mounted dual-sided front-facing audio system according to claim 2, characterized in that: The fixed installation assembly includes a mounting bracket and shock-absorbing pads; The shape of the mounting bracket is adapted to the shape of the mounting mating surface at the preset position, and the shock-absorbing pad is sandwiched between the mounting bracket and the mounting mating surface to reduce the vibration transmission when the audio unit is working.

4. A seat-mounted dual-sided front-facing audio system according to claim 3, characterized in that: The venue seating includes a left armrest or left side panel on the left side and a right armrest or right side panel on the right side; The mounting mating surfaces are located on the outer sides of the left armrest and the right armrest, or on the upper part of the left side panel and the upper part of the right side panel, so that the height of the sound-emitting end is aligned with the preset height of the human ear.

5. A seat-mounted dual-sided front-facing audio system according to claim 1, characterized in that: Both the left-side directional speaker and the right-side directional speaker are ultra-thin directional loudspeakers, and each is equipped with an acoustic damping module and a sound angle adjustment component.

6. A seat-mounted dual-sided front-facing audio system according to claim 5, characterized in that: The sound angle adjustment component is configured to adjust the sound angles of the left-side directional speaker and the right-side directional speaker within a range of 30° to 60°.

7. A large-scale stadium sound system, characterized in that, include: Multiple front-mounted seat audio systems as described in any one of claims 1 to 6, wherein the multiple front-mounted seat audio systems are arranged in an array; as well as A sound field control module is communicatively connected to the audio units in each of the front seat audio systems and is configured to transmit audio signals to the audio units and perform sound field control.

8. A large-scale stadium sound system according to claim 7, characterized in that: The sound field control module is configured to execute at least one of the following modes: unified control mode for the entire field, zone control mode, and independent control mode for a single seat. In the single-seat independent control mode, the sound field control module is configured to independently adjust the volume and / or sound emission angle of the audio unit in a single front seat audio system.

9. A large-scale stadium sound system according to claim 8, characterized in that: The system also includes a signal transmission module, which includes an anti-interference transmission line; The sound field control module is wired to each of the front seat audio systems via the anti-interference transmission line. The system also includes a centralized power supply module, which is electrically connected to each of the front-mounted seat audio systems for unified power supply; The centralized power supply module is equipped with an overload protection unit.

10. A large-scale stadium sound system according to claim 9, characterized in that: The centralized power supply module is connected to a power supply line, and wiring channels are provided inside the seats of each venue. The power supply lines are concealed within the wiring channels of the stadium seats.

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