FAQ

A sound shielded room or silent box provides a test environment with very low background noise, ensuring that the acoustic signal of the product under test is not masked by external noise. The result is accurate and repeatable measurement. Such conditions are particularly critical for the audio testing of motors, household appliances, loudspeakers and mobile phones.

Electromagnetic shielding employs a shield constructed from conductive or magnetic material to confine the electromagnetic field to one side of a boundary, ensuring that the interior and exterior of the shielded space do not interfere with one another. It prevents external waves from disturbing precise measurement within the enclosure and prevents the emissions of the equipment itself from leaking outward. It therefore constitutes the foundation of EMC testing and sensitive electronic measurement.

Correct shielding requires selecting materials and structures appropriate to the target frequency range, maintaining the shield in an electrically continuous and well grounded condition, and properly treating leakage at openings such as doors, windows, ventilation ports and cable entries. The shielding effectiveness must be verified through professional testing, and the design and construction are therefore best entrusted to a manufacturer experienced in both acoustic and electromagnetic engineering.

Isolation depends on the type and structure of the equipment. A sound enclosure typically attains 20 to 40dB, a soundproof or silent room can exceed 50dB, and a silent box provides approximately 50dB of isolation. Actual performance is further influenced by frequency, the number of wall layers and the quality of the sealing. Anteck designs a customised solution in accordance with the target specifications defined by the client.