Product Noise Testing & End-of-Line QC

Acoustic Test Room

Name: Acoustic Test Room
Brand: HEMU Acoustics

Dedicated acoustic test rooms combining a soundproof outer shell with an acoustically treated interior — purpose-built for end-of-line production noise testing and R&D acoustic measurement.

プロジェクト相談技術詳細を見る

技術仕様

Background noise≤ NC-25

Reverberation timeTuned per application

Outer shell IL30–50 dB

Interior treatmentDiffuse / semi-diffuse field

Automation accessConveyor / robot hatches

PLC integrationI/O connections standard

StandardISO 3744 / ISO 3745 compatible

Size range5 m² – 100 m² floor area

CertificationCE; acoustic acceptance report

仕様は初期のプロジェクト確認用です。最終的なパラメータ、材料、証明書、受入基準は、署名済み契約書または承認済み技術提案書で確認してください。

用途

End-of-line (EOL) acoustic QC testing
Household appliance noise measurement
Power tool production testing
Electric motor acoustic signature analysis
HVAC unit noise certification
R&D product development testing

概要

An acoustic test room serves a dual function: the outer shell attenuates external noise to create a low-background measurement environment, while the interior treatment controls reverberation to provide a diffuse or semi-diffuse field for repeatable production testing.

HEMU Acoustics acoustic test rooms are designed for end-of-line (EOL) production quality testing, where each manufactured product must pass a noise signature check before dispatch. The room provides consistent acoustic conditions shift-to-shift and line-to-line, enabling statistical process control for acoustic quality.

Background noise levels of NC-25 or lower are achievable, ensuring that even quiet products (< 40 dB(A)) can be measured with adequate signal-to-noise ratio. Reverberation time (T60) is tuned to the measurement standard — typically 0.4–0.8 s for ISO 3744 sound power determination, or 0.1–0.2 s for directional microphone measurements.

Automated test station provisions — including fixture mounting points, cable pass-throughs, robot arm access hatches, and PLC I/O connections — are integrated into the room design for seamless production line integration. Optional conveyor integration allows products to enter and exit the room on the production line without manual handling.

主な特徴

Production Line Integration

Conveyor pass-through hatches with acoustic seals. Robot arm access ports. PLC I/O and Ethernet connections for automated test sequencing.

Tuned Reverberation

Interior absorption designed to achieve target T60 for the specific measurement standard. Variable absorption panels available for multipurpose rooms.