Grade-A Office: Open-Plan Speech Privacy Fix (Bangkok)
An A-grade office reported high speech intelligibility across work zones. Using Class 1 logging, octave analysis, and targeted ceiling/absorption tuning, we validated design changes and closed out with objective privacy metrics aligned to global benchmarks.
- −6 to −8 dB(A) LAeq in focus zones
- STI reduced from 0.55 → 0.40
- Sign-off in 12 business days
Tags: Building Acoustics • Class 1 SLMs • Building Toolkit
Metro Extension: Night-Time Construction Compliance (Kuala Lumpur)
Contractor required night-work monitoring near residences. We deployed remote Class 1 meters with alerts and produced defensible reports for authorities, enabling schedule adherence without violations.
- 0 compliance breaches across 9 weeks
- Real-time alerts < 60 s latency
- Reporting cycle reduced by 50%
Tags: Transportation • Environmental • Class 1 SLMs
University Dorms: Wall/Floor Upgrades Validation (Singapore)
Post-retrofit, the client needed proof of acoustic uplift. Source/receiver room tests with calibrated sources confirmed targets and supported phased investment decisions.
- DnT,w improvement +7 dB
- Impact noise Ln,w improved −9 dB
- Rework avoided on 18 rooms
Tags: Education • Building Toolkit • Sound Sources
Hospitals: Nurse Station Quieting (Ho Chi Minh City)
Elevated background noise impacted staff fatigue. We profiled spectral contributors and optimized finishes and masking strategy.
- LAeq −5 dB(A) daytime
- 22% reduction in peak exceedances
- Patient survey “quiet at night” +18 pts
Tags: Healthcare • Class 1 SLMs • Building Toolkit
Industrial Plant: Tonal Noise Mitigation (Rayong)
Community complaints traced to a tonal fan component. Narrowband analysis isolated the frequency; targeted treatment resolved the issue with minimal CapEx.
- Tonal prominence removed (ΔLta < criterion)
- Complaints dropped to zero in 30 days
- Avoided enclosure cost > US$75k
Tags: Industrial • Class 1 SLMs
Airport Access Road: Barrier Optimization via Modeling (Manila)
Pre-build modeling + validation measurements de-risked barrier height and placement decisions.
- Achieved ≥ −8 dB(A) at façades
- Material cost optimized −14%
- Authority approval on first submission
Tags: Transportation • Noise Mapping Software
Shopping Mall: HVAC Low-Frequency Control (Jakarta)
LF hum reduced shopper dwell time. Source identification + isolation tuning delivered perceptible comfort gains.
- 31.5–63 Hz bands −4 to −6 dB
- Customer satisfaction +12 pts
- Contractor rework cycle −40%
Tags: Building Acoustics • Vibration/Structure-borne
Residential Tower: Façade Acoustic Assurance (Bangkok)
Sales team needed transparent evidence for premium units near a busy road. Pre-handover façade tests substantiated marketing claims.
- External-to-internal LAeq reduction ≥ 28 dB
- 100% units passed acceptance on first test
- Post-handover defects −35%
Tags: Building Acoustics • Sound Sources • Class 1 SLMs
Smart Factory: Alarm Audibility & Zoning (Penang)
Overlapping alarms caused risk. Spectrum mapping and audibility verification re-zoned signals with standards alignment.
- False alarms −60%
- Mean response time −22%
- OSHA/EN audibility thresholds met
Tags: Industrial • Class 1 SLMs
University Auditorium: Speech Clarity Without Over-Treating (Hanoi)
Balanced reverberation and early reflections improved speech/music multipurpose use, validated with on-site measurements.
- STI 0.45 → 0.62 at rear seats
- RT60 tuned to 1.1–1.3 s @ 500 Hz
- CapEx avoided by design-first approach
Tags: Education • Building Toolkit • Sound Sources