NVH Testing & Appliance Noise
반무향실
Anechoic walls and ceiling with a hard, reflective floor — the industry-standard configuration for automotive NVH, household appliance noise testing, and power tool certification.
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Specifications are for preliminary project review only. Final parameters, materials, certificates, and acceptance criteria should be confirmed in the signed contract or approved technical proposal.
적용 분야
- Automotive NVH component testing
- Electric vehicle powertrain noise
- Household appliance sound power (IEC 60704)
- Power tool noise certification
- HVAC equipment acoustic rating
- Industrial machinery noise measurement
개요
A semi-anechoic chamber replicates an infinite reflective half-space: the floor is solid and acoustically reflective, while walls and ceiling are lined with sound-absorbing wedges. This configuration matches real-world operating conditions for most products, which are tested on floors or mounted on surfaces in use.
HEMU Acoustics semi-anechoic chambers are widely used for ISO 3745 sound power measurements, automotive component NVH characterization, household appliance noise rating (IEC 60704), and industrial equipment certification. Available with drive-in ramps and underfloor dynamometer foundations for full vehicle testing.
The reflective floor (typically polished concrete or steel plate) enables consistent half-space measurements. Our modular system accommodates widths from 4 m to 20 m, with ceiling heights up to 8 m. Custom configurations for electric vehicle powertrain testing, including grounding provisions and high-voltage cable penetrations, are available.
Background noise levels of NC-15 or lower are achievable, ensuring compliance with the most demanding measurement standards. All chambers are delivered with a full acoustic qualification report validated to the specified standard.
주요 특징
Drive-In Vehicle Access
Optional drive-in ramp rated to 4 t axle load with airtight acoustic door seal. Suitable for full car, motorcycle, and commercial vehicle testing.
Underfloor Integration
Custom underfloor pits for dynamometers, roller benches, and torque measurement systems. Structural loads calculated per EN 1990.
EV-Ready Configuration
High-voltage cable penetrations, shielded lighting, and non-sparking surface options for battery electric vehicle NVH labs.
Precision Floor Level
Polished concrete or steel plate floor with ±2 mm flatness tolerance across the full chamber footprint.
Acoustic Door System
Double-seal acoustic door with ≥45 dB insertion loss. Available in single, double, and drive-in (roll-up) configurations.
Acoustic Qualification
Delivered with ISO 3745 qualification report. Optional third-party validation by accredited laboratory available on request.
SEMrush 기반 적용 분야
적용 사례: 반무향실
실제 SEMrush US 데이터에서 3개의 롱테일 적용 사례를 선택하고 키워드, 검색량, CPC, KD, 의도 자료를 보관합니다.
Anechoic & Acoustic Test Chambers
Semi Anechoic Chamber Application Case for Semi-Anechoic Chamber
SEMrush US (2026-06-14): "semi anechoic chamber" - volume 70/mo, $2.23 CPC, KD 13, intent Informational, source 20260614-semi-anechoic-chamber-us-exact.csv
사례 읽기
Anechoic & Acoustic Test Chambers
Semi Anechoic Application Case for Semi-Anechoic Chamber
SEMrush US (2026-06-13): "semi anechoic" - volume 70/mo, $2.23 CPC, KD 9, intent Informational, source 20260613-anechoic-chambers-us-related.csv
사례 읽기
Anechoic & Acoustic Test Chambers
Anechoic Chamber Near Me Application Case for Semi-Anechoic Chamber
SEMrush US (2026-06-13): "anechoic chamber near me" - volume 480/mo, $2.03 CPC, KD 30, intent Informational + Transactional, source 20260613-soundproof-chamber-us-related.csv
사례 읽기요구사항을 논의할 준비가 되셨나요?
Send equipment drawings, site photos, target noise level, and documentation requirements for review.