Aug 01, 2025
Terminator of the stubborn noise problem on set
In May 2024, an unusual scene occurred during the filming of the Netflix series "Silent Planet": three diesel generators were operating adjacent to the recording studio, but the recording engineer did not shout the familiar "Cut for generator. This is thanks to Generator Diesel Silent, whose 52 decibel operating noise (equivalent to the sound of household air conditioning) completely rewrote the power supply rules in the film and television industry. According to a survey by the International Society of Cinematographers, the widespread use of silent generators has increased the recording efficiency of film and television projects by 40% during the same period, saving global producers over $230 million in supplementary recording costs annually.
1、 Technical decryption: How to achieve "library level" silence?
1. Triple noise reduction system architecture
Acoustic Maze Design
Multi layer sound-absorbing cotton+Helmholtz resonator combination attenuates high-frequency noise above 2000Hz by 90%
Patent honeycomb exhaust pipe reduces exhaust noise to below 65 decibels
active noise cancellation
Sound wave cancellation system equipped with AMD EPYC processor, generating real-time reverse sound waves
32 microphone arrays achieve 360 ° noise monitoring with response delay<5 milliseconds
Vibration Control Revolution
Magnetic levitation bracket isolates mechanical vibration transmission
Liquid metal damping agent absorbs low-frequency resonance
2、 On set transformation: from "power anxiety" to creative freedom
1. Typical application scenarios
Simultaneous recording of outdoor scenes
During the filming of the historical drama 'Victoria' in central London, the distance between the generator and recording point was reduced from 30 meters to 3 meters
Night photography
Hong Kong action film 'Dark War 3' achieves zero complaints during early morning shooting in residential areas
Special effects
When recording Dolby Atmos, the continuity of environmental background noise can be preserved
2. Economic benefit calculation
Time cost
Reduce 60% of NG incidents caused by power supply noise
The average daily shooting time has been extended by 2.5 hours
Implicit benefits
The improvement of performance quality brought about by the continuous improvement of actors' emotions
Avoiding post production ADR (automatic dialogue replacement) saves $1.20-4 million per movie
3、 Industrial Chain Impact: Who is Driving This Revolution?
1. Reshaping the Equipment Vendor Landscape
Traditional giants
Caterpillar acquires professional noise reduction company Sonovex
Japan's Yangma launches the "Yanmar Silent+" series exclusively for performing arts
Emerging brand
China EVE Energy releases diesel lithium hybrid silent unit
Israeli company Pentalum develops zero noise solution based on wind energy
2. The rental market is booming
Hollywood equipment rental company Vertech's procurement volume increases by 300% annually
China Hengdian Film and Television City establishes a shared pool of silent generators
Rent premium reaches 2-3 times that of conventional models, but demand still exceeds supply
3. Upgrading film and television standards
The Motion Picture Association of America has included "silent power supply" in its green filming certification
New generator noise limitation clause added to the 4K/8K production specifications of China Central Radio and Television Station
4、 Opportunities and Challenges in the Chinese Market
1. Localized innovation
Shandong Weichai develops low oxygen silent unit adapted to high-altitude environment
DJI collaborates with Huawei to develop an intelligent power management system for film sets
2. Industry pain points
High end sound-absorbing materials rely on imports (BASF sound-absorbing cotton from Germany accounts for 85%)
Small production teams find it difficult to afford the daily rental fee of $800
3. Policy dividends
The National Film Administration's 14th Five Year Plan subsidizes the procurement of silent equipment
Hengdian Film and Television Industry Park provides special loans for equipment upgrades
5、 Future prospects: Where are the boundaries of silent technology?
1. Technical roadmap
2025: Acoustic stealth shell based on metamaterials
2026: Commercialization of hydrogen fuel silent generators
2028: Self learning noise reduction AI system
2. Application Extension
Power supply at the concert venue
Emergency power supply for high-end residential areas
Wildlife documentary filming
3. Industry Warning
Safety hazards caused by excessive silence (inability to perceive device operating status)
May give rise to new psychological problems on set, such as "absolute silence obsessive-compulsive disorder"