스타벅스 성수점 잔향 측정 보고서 (2026)
Before/after reverberation (T20) field measurement of 48T melamine-foam ceiling absorber. 1 kHz 2.30s → 0.36s. ISO 3382-2 · DIN 18041 A4.
CertificationAcoustic
Verified in numbers.
Licensed by the Ministry of Environment as a measurement agency, we issue official, legally admissible reports. We measure all three tracks—absorption, blocking, masking—with Class 1 instruments and standardized procedures, returning reports usable as-is for occupancy approvals, dispute resolution, and certification submissions.
Solution tracks
3트랙
Absorb · Block · Mask — measured
License
1종
Ministry of Environment registered (legally admissible)
Equipment
Class 1
Class 1 sound level meter · omni source · analysis SW
Lead time
3영업일
after on-site measurement
Process
Process flow.
Five steps from site survey to report issuance. Large spaces: two engineers, one day. Smaller spaces: half a day.
Step · 01
Site survey · point selection
Based on the floor plan, we select measurement points (3–12) and source positions.
Step · 02
Calibration · setup
After calibrating the Class 1 microphone with an acoustic calibrator and checking the signal chain, we begin measurement.
Step · 03
Per-track standardized measurement
We measure all three tracks—absorption (RT60·EDT·STI), blocking (D_nT,w · L'_nT,w), masking (SPL · NC)—using the procedures of ISO 3382, ISO 16283, ASTM E1573, and other applicable standards.
Step · 04
Data analysis
In impulse-response analysis software, we compute per-octave results and judge against the applicable guideline.
Step · 05
Report issuance
We return the official report (PDF and printed copies) with measurement-agency seal and engineer signature.
Solutions
Measure: Absorb · Block · Mask.
We measure all three tracks with standardized procedures and issue legally admissible reports.
Track 01 · Absorb
흡음 측정
From impulse responses, we measure RT60 (reverberation), EDT, C50, STI, and D50 in octave bands. With a Class 1 sound level meter and an omni-directional source, we collect data from 3–12 seat positions and return the results alongside the guideline-based judgment. *Issued in compliance with KS F ISO 3382-2 (typical rooms), 3382-3 (open-plan offices), the School Health Act, or whichever standard the project requires.*
RT60 · EDT · STIKS F ISO 3382
Track 02 · Block
차음 측정
We measure in-situ isolation performance of walls, doors, and floors (D_nT,w · R'_w), impact noise ratings (L'_nT,w), and external SPL ingress. The procedure uses a Class 1 sound level meter with an artificial sound source and a tapping machine. *Issued in compliance with KS F ISO 16283-1/2 (in-situ isolation), the Environmental Testing and Inspection Act, or whichever standard the project requires.*
D_nT,w · R'_w · L'_nT,wKS F ISO 16283
Track 03 · Mask
마스킹 · 배경음 측정
After masking-system commissioning, we measure SPL distribution uniformity and the 1/3-octave spectrum, and evaluate background noise (NC · Leq · LMax). For open-plan offices, we also compute speech-privacy metrics: DA · rD · LpA,S,4m. *Issued in compliance with ASTM E1573 (masking), KS F ISO 3382-3 (open-plan offices), or whichever standard the project requires.*
SPL · NC · DA · rDASTM E1573
Deliverables
Report structure.
The legally admissible official report and the technical analysis report are delivered separately.
Official report
Measurement-agency seal · engineer signature · PDF + three printed copies
Summary
Measurements · guideline comparison · pass/fail judgment
Spectrum
125 Hz – 4 kHz RT60 · SPL · NC by octave
Point map
Measurement point layout · instrument and source positions
Raw data
Impulse-response WAV · octave-band CSV · analysis project file
Recommendation
If improvement is needed: a remediation plan and material proposal
Formats
PDF (report and analysis) · CSV (raw) · WAV (impulse)
Lead time
3 business days after on-site measurement · 48h on rush
Case Report
Measurement case report.
A field reverberation report measured per ISO 3382-2. Download the full report as PDF.
When
When to engage.
Measurement can be requested anytime documentary proof is needed—before or after occupancy, during disputes, or for certification.
✓ 적합한 시점
- Occupancy approvals · School Health Act · dormitory regulations
- Pre-opening tuning for performance venues and offices
- Certification submissions — LEED, WELL, G-SEED
- Noise complaints and floor-impact dispute resolution
- Verification against the simulated values from prediction
⚠ 측정만으로 부족한 경우
- During construction, when finishes are incomplete
- Movable partitions or fluctuating occupancy — conditions must be fixed first
- For preventive improvement, pair with the design stage
- When audience presence affects results — agree on the test condition first
Start with the site.
Share the address and purpose of measurement—we'll return schedule, lead time, and quote within 48 hours.