Building Acoustics Testing Kit - Complete Buyer Guide
คู่มือการเลือกซื้อชุดทดสอบอะคูสติกอาคาร
Introduction
Building acoustics testing is essential for verifying sound insulation performance, room acoustics quality, and compliance with building regulations. This comprehensive guide will help you select the right equipment for your building acoustics measurements.
การทดสอบอะคูสติกอาคารเป็นสิ่งจำเป็นสำหรับการตรวจสอบประสิทธิภาพการกันเสียง คุณภาพอะคูสติกห้อง และการปฏิบัติตามกฎระเบียบอาคาร คู่มือฉบับสมบูรณ์นี้จะช่วยคุณเลือกอุปกรณ์ที่เหมาะสมสำหรับการวัดอะคูสติกอาคาร
Key Measurements
Airborne Sound Insulation
Measurement of sound reduction between spaces transmitted through the air (walls, floors, windows)
Impact Sound Insulation
Assessment of floor/ceiling systems ability to reduce impact noise (footsteps, dropped objects)
Façade Sound Insulation
Evaluation of building envelope performance against external noise sources
Reverberation Time
Measurement of acoustic decay in rooms to assess speech intelligibility and music quality
Essential Equipment
Sound Level Meter (Class 1 or 2)
Type 1 (precision) required for official testing, Type 2 acceptable for screening
Omnidirectional Sound Source
12-sided dodecahedron loudspeaker for standardized sound radiation
Power Amplifier
Sufficient power output (typically 200W+) to generate required sound levels
Tapping Machine
Standard impact source with 5 hammers for floor/ceiling testing
Tripod & Extension Poles
For positioning measurement microphone at multiple locations
Calibrator
Class 1 acoustic calibrator for meter verification before and after measurements
Building Acoustics Software
For automated measurements, real-time display, and report generation
Budget Options
Basic Package ($8,000 - $15,000)
- Class 2 sound level meter
- Dodecahedron sound source
- Small power amplifier (100W)
- Basic accessories
Suitable for:
Screening measurements, basic compliance checks
Professional Package ($20,000 - $35,000)
- Class 1 precision sound level meter
- High-power dodecahedron source
- Professional power amplifier (200W+)
- Tapping machine
- Building acoustics software
- Complete accessory set
Suitable for:
Official testing, consultant work, comprehensive measurements
Advanced Package ($40,000+)
- Multi-channel analyzer
- Multiple sound sources
- High-power amplification
- Complete impact sources
- Advanced software suite
- Extended frequency range equipment
Suitable for:
Research, large-scale projects, specialized testing
Selection Criteria
Frequency Range
Standard measurements: 100 Hz - 3.15 kHz, Extended: 50 Hz - 5 kHz for low-frequency issues
Accuracy Class
Class 1 for official/legal work, Class 2 acceptable for screening and internal QC
Software Integration
Automated measurement routines save time and reduce user errors in field testing
Portability
Consider weight and size for regular field work, especially for solo operators
Battery Life
Essential for full-day field work without access to mains power
Common Mistakes to Avoid
- ⚠Choosing Class 2 meter when Class 1 is required by local regulations
- ⚠Insufficient amplifier power for large rooms or high ambient noise
- ⚠Forgetting essential accessories like extension poles and microphone windscreens
- ⚠Not considering low-frequency capability when required by standards
- ⚠Overlooking software compatibility with existing equipment
Pro Tips
- 💡Always verify equipment meets your local building code requirements
- 💡Consider rental for occasional use vs. purchase for regular testing
- 💡Factor in calibration and service costs when budgeting
- 💡Choose modular systems that can be expanded as needs grow
- 💡Ensure adequate training in measurement standards and techniques
Next Steps
- 1Review applicable standards and regulations for your region
- 2Determine required accuracy class and frequency range
- 3Assess measurement frequency and whether rental or purchase makes sense
- 4Contact suppliers for equipment demonstrations
- 5Budget for training and ongoing calibration
Technical Reference
A complete building acoustics testing kit for ISO 16283 field work consists of five core components: (1) a Class 1 sound level meter with octave-band and 1/3-octave real-time analysis (e.g. Norsonic Nor150), (2) an omnidirectional dodecahedron loudspeaker and power amplifier for airborne sound insulation (Norsonic Nor276 + Nor280), (3) a standardised tapping machine for impact sound measurements (Norsonic Nor277), (4) IEC 61094-4 measurement microphones for spatial averaging, and (5) post-processing software that computes weighted single-number quantities (R'w, L'nT,w) with uncertainty budgets.
Sound Level Meter Requirements
ISO 16283 requires a Class 1 IEC 61672-1 sound level meter with octave-band or 1/3-octave band real-time analysis. The meter must support LAeq measurement with a minimum averaging time of 10 seconds and ideally include impulse response measurement capability for combined use with ISO 3382 room acoustics work. The Norsonic Nor150 is a dual-channel instrument that meets these requirements and additionally supports multi-point spatial averaging.
Omnidirectional Sound Source
ISO 16283-1 specifies that the sound source must have an omnidirectional radiation pattern within ±3 dB across the test frequency range (100 Hz – 3.15 kHz in octave bands). The Norsonic Nor276 dodecahedron loudspeaker with the Nor280 power amplifier achieves >110 dB SPL at 1 m and meets the directivity requirements of ISO 3382 and ISO 16283.
Tapping Machine Specification
For impact sound insulation measurements (ISO 16283-2), the tapping machine must conform to ISO 10140-5: 5 hammers, 100 g each, 40 mm drop height, 10 Hz repetition rate. The Norsonic Nor277 meets these specifications and is available with optional rubber tipped hammers for soft floor coverings.
Microphone Selection
Field measurements use IEC 61094-4 WS2F (free-field) or omnidirectional microphones. For spatial averaging in reverberant rooms, rotating microphone booms or multiple fixed microphone positions per ISO 16283 Annex A are used. PLACID PMP-Series microphones with Nor1209 preamplifiers provide the required frequency response from 100 Hz to 3.15 kHz.
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