Use technology to "feel the pulse" and ask about stage lighting and audio


Lighting and sound are two brothers on stage,

It is an indispensable helper for stage presentation.

Without lights, the stage is not dazzling enough;

Without the audio, the scene is not shocking enough.

From the factory to the stage, what kind of monitoring must the lighting and audio equipment undergo to play their role? And look at the decryption of "Stage Lighting and Sound Physical Examination Notes".

After the stage lighting and sound were born from the factory

Go through a 4-step physical examination


cruel nature

High temperature, low temperature, dustproof and other tests are all side dishes

If it is stage lighting and sound for live performances

Seventy-seven eighty-one days and ninety-nine forty-nine tests

Waterproof, rain, UV accelerated aging, xenon lamp aging, alternating high and low temperature, humid heat, salt spray...

The detection link simulates various wonderful situations of nature

Rain will make the device "cold"

Sunlight will "aging" the device

The wind by the sea, it will wrap the sand... into the crevices

A flood...could just be swept away with the current


ferocious force

Whether it is made or not, it all depends on how...

The detection link should:

Tension, compression, bending, twisting, tearing, peeling, fastening

Plus whole body vibration SPA

Maybe also experience a flying with the wind

Enjoy the thrill of free fall


Repeated torture and unpredictable electric current

After the overall beating, there are parts tests

Try another electric shock

Strong insulation ability under instantaneous high voltage is the focus of this level


Category specialization

Stage lighting:

● Investigate photoelectric performance

The photoelectric performance mainly includes total luminous flux, luminous efficacy, color temperature, color rendering index, peak wavelength, dominant wavelength, spectral power distribution, power, power factor, etc.

Photoelectric Performance Laboratory

● Investigate optical performance

Mainly luminous intensity distribution, color temperature, brightness, color rendering index, dominant wavelength, spot angle, beam angle, effective luminous flux, average illuminance, illuminance uniformity, lamp efficiency, lamp luminous efficacy, etc.

Darkroom Full-space distributed photometry laboratory

● Investigate photobiological safety

It mainly measures the photochemical ultraviolet hazard of the skin and eyes, the near-ultraviolet hazard of the eye, the infrared radiation hazard of the eye, the retinal blue light hazard of the eye, the retinal thermal hazard and the retinal thermal faint hazard, etc.

Darkroom Photobiological Safety Laboratory

Stage sound:

● Acoustic parameters

Mainly measure the frequency response range, impedance, resonance frequency, total harmonic distortion, sensitivity, directivity, rated maximum sound pressure level, rated noise power, etc.

full anechoic chamber

In this magical room, the walls, ceiling, and floor are all the highest-level sound-absorbing devices, and there is almost no echo. When two people talk, you can only hear the voice coming from the other party's mouth.

Here, the acoustic parameters of loudspeakers, microphones, earphones, wireless microphones, etc. can be measured most accurately.

● Electrical performance parameters

Mainly measure frequency response, total harmonic distortion, difference frequency distortion, modulation distortion, signal-to-noise ratio, equivalent noise, sampling frequency, time base jitter, quantization bit, rated output voltage and power, voltage gain, damping coefficient, etc.

Audio and video product electrical performance laboratory

● Wireless transmission test

In a dedicated electromagnetic shielding room, measure carrier frequency, carrier frequency error, frequency stability, carrier power, rated frequency deviation, limiter sensitivity, dual signal selection, etc.

Electromagnetic Shielding Laboratory

The "examiner" of all the above items is currently the only national product quality supervision and inspection center in the national culture and tourism system, and the national stage equipment quality supervision and inspection center.

In April 2014, the China Institute of Arts and Science and Technology established a stage equipment testing center to carry out pilot work on stage equipment inspection and testing. In September of the same year, it obtained the qualification certificate of measurement certification.

The laboratory construction began in 2017. On October 18, 2019, it obtained the CAL authorization certificate and CMA qualification certificate of the "National Stage Equipment Quality Inspection and Testing Center" issued by the State Administration for Market Regulation (National Certification and Accreditation Administration Committee), marking the The first national product quality inspection center in the cultural and tourism system was officially put into operation.

Since its establishment, the center has actively served the industry and achieved good social benefits. Undertook the 11th China Arts Festival (Shaanxi, 31 venues), the 12th China Arts Festival (Shanghai, 19 venues), the 12th National Dance Show, and the 20th Anniversary of Macao’s Return to China ", the cultural evening celebrating the 70th anniversary of the founding of the People's Republic of China "Struggle, Chinese Sons and Daughters", the cultural evening celebrating the 100th anniversary of the founding of the Communist Party of China "The Great Journey", the opening and closing ceremonies of the 2022 Winter Olympics and Paralympics, etc. Dozens of major domestic events Stage safety inspection tasks for cultural performances; completed professional equipment inspections and inspections for more than 300 cultural facilities in China, ensuring zero accidents in performance safety, known as "stage doctor".

"National Stage Equipment Quality Supervision and Inspection Center" currently has 20 professional laboratories, equipped with more than 300 sets of precision instruments and equipment, and has comprehensive capabilities such as inspection and testing, measurement certification, standard research and development, and personnel training. The overall technical level is in the leading position in China It will carry out technical work such as stage equipment testing and certification for national commercial performance venues, public cultural venues, tourist performing arts venues, and major cultural performances.

At present, many stage lights and speakers do not fully meet the corresponding standards, because they have not passed the three physical examinations of cruel nature, ferocious external force, repeated torture and unpredictable electric current. Those that have passed the inspection of the "National Stage Equipment Quality Supervision and Inspection Center" all bear the CMA mark.

Therefore, theaters, performers, and audiences, don't be fooled by the gorgeous appearance of stage lighting and sound. Only those who have undergone physical examination have real strength.


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