The standard impactor (also known as the standard impactor or floor impactor) is a professional measurement tool used in laboratory and on-site measurements of floor impact sound insulation performance. It is also the main artificial sound source used in on-site measurement of sound insulation performance of sound enclosures. part. It consists of 5 impact hammers. The free falling motion of each impact hammer acts on the test surface such as the floor slab within a specified time interval to generate impact sound.

First, let's take a look at the structure of the SVLab 239 standard impactor. The standard impactor is mounted on three height-adjustable rubber support feet via an aluminum frame. An internal camshaft drives five drop weights of 500 grams each, spaced 10 centimeters apart. The hammer mass, impact height and distance between hammers of our SVLab 239 standard impactor are all designed in strict accordance with the specifications. After operation, it can produce a precise impact sound source

01 Applicable standards

• GBT 19889.7 Acoustical Buildings and Building Components Sound Insulation Measurements Part 7: On-site Measurements of Impact Sound Insulation
• ISO 717-2 Acoustics - Calibration of sound insulation of buildings and building components - Part 2: Impact sound insulation
• ISO 140-8 Acoustics . Measurements of sound insulation of buildings and building components . Part 8: Laboratory measurements to reduce the transmission of impact noise to standard floor coverings
• GBT 50121 Building sound insulation evaluation standards
• ISO 140-7 Acoustics - Measurement of sound insulation of buildings and building components - Part 7: On-site measurement of floor impact sound insulation
• ISO 140-6 Acoustics . Measurements of sound insulation of buildings and building components . Part 6: Laboratory measurements of ground impact acoustic isolation
• JJF1652-2017 Standard Impactor Calibration Specifications

02 Building floor sound insulation measurement tool

The SVLab 239 standard impactor is an impact sound source suitable for sound insulation measurement of building floors. It uses wireless radio frequency technology to achieve remote control and easily penetrate common walls and ceilings. The integrated structural design ensures strength while also achieving lightweight, supports battery and AC power supply, and is suitable for a variety of measurement scenarios.

Using the SVLab 239 standard impactor for building acoustics testing can help us understand the building's sound insulation performance, acoustic quality and airborne sound insulation performance. This is of great significance to ensure that the acoustic performance of the building meets the requirements and to improve the quality of the living and working environment.

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