Engineers and R&D specialists engaged in vehicle manufacturing, HVAC machinery and industrial noise testing constantly face unstable measurement results inside ordinary factory workshops. Heavy products including complete vehicles, large blowers, commercial air-conditioning units and compressors cannot fit into fully anechoic chambers with fragile suspended floor grids. Ambient traffic vibration, workshop machinery noise and indoor sound reverberation distort sound power and abnormal noise spectrum readings, making it hard to verify noise reduction solutions during product iteration. Outsourced third-party testing brings long lead times and high recurring costs, while manufacturers lack credible in-house acoustic data for tender bidding and global product certification across Singapore and ASEAN markets.

Our custom-built hemi-anechoic chamber is a standardized acoustic lab tailored for heavy industrial product validation, fully compliant with ISO 3744, ISO 3745 international acoustic standards and Singapore local industrial noise control regulations. The chamber features five surfaces lined with high-efficiency sound-absorbing wedges and a high-load rigid reflective floor, replicating semi-free field conditions identical to paved roads and factory ground in real operating scenarios. A standalone floating vibration-isolation “room-within-room” structure blocks external structure-borne vibration and airborne noise entirely. All key indicators including background noise and free field deviation pass full-spectrum multi-point instrument inspection before handover. The rigid floor supports multi-tonne new energy passenger vehicles and large industrial units, capturing subtle abnormal noise and sound radiation characteristics of motors, water pumps and fan assemblies accurately

New energy vehicle OEMs and auto component suppliers carry out full NVH validation including vehicle idle noise, pass-by noise, drive motor and air conditioning assembly testing inside the chamber, comparing vibration isolation and sound insulation schemes efficiently to improve vehicle quietness at early design stages. HVAC and refrigeration manufacturers conduct batch noise inspection for outdoor air conditioner units and fresh air systems, filtering defective products with abnormal operating noise to cut customer after-sales complaints. Fan, pump and construction machinery producers simulate outdoor working acoustic environments to measure complete machine sound power levels, supplying reliable data for product noise reduction upgrades. SAC-accredited third-party testing labs and university acoustic research centres expand service portfolios with hemi-anechoic chambers, providing globally recognised test reports for vehicle certification, industrial equipment noise calibration and sound absorption material experiments to boost industry influence.