Standards Conformance
Every calculation traceable to its source standard
Procurement decisions for acoustic design software demand verifiable standards compliance. AcousPlan provides clause-level traceability to 24 international standards, green building certifications, and national building codes — more than any other acoustic design tool on the market.
Core Calculation Standards
The foundational ISO and IEC standards that govern every acoustic calculation in AcousPlan. Each implementation is verified against published reference values.
ISO 3382-1:2009
ImplementedAcoustics — Measurement of room acoustic parameters — Performance spaces
Full octave-band calculation per §4-8; all parameters in results dashboard. Multi-source Room Impulse Response generation per Annex A with binaural rendering (ITD/ILD spatial cues) via pyroomacoustics image source method.
Clause references: Full octave-band calculation per sections 4 through 8
ISO 3382-2:2008
ImplementedAcoustics — Measurement of room acoustic parameters — Reverberation time in ordinary rooms
Dual-model RT60 prediction using Sabine (diffuse field assumption) and Eyring (non-uniform absorption) across six octave bands (125 Hz to 4 kHz). Automatic model selection based on average absorption coefficient.
Clause references: Sabine formula per Annex A.1, Eyring formula per Annex A.2, measurement guidance per section 5.2
ISO 354:2003
ImplementedAcoustics — Measurement of sound absorption in a reverberation room
All 5,678 materials in the AcousPlan database use ISO 354 sound absorption coefficients. Each material entry includes frequency-dependent alpha values and weighted NRC rating.
Clause references: Absorption coefficient derivation per section 7
IEC 60268-16:2020
ImplementedSound system equipment — Objective rating of speech intelligibility by speech transmission index
Full modulation transfer function method for STI computation. Accounts for reverberation and ambient noise contributions to modulation reduction. Results classified per IEC quality scale (Bad to Excellent).
Clause references: STI calculation per section 4.3, STIPA per section 5
ISO 717-1:2020
ImplementedAcoustics — Rating of sound insulation in buildings — Part 1: Airborne sound insulation
Weighted sound reduction index (Rw) calculation in the Sound Insulation Calculator. Supports 52 wall and floor assemblies with frequency-dependent transmission loss data.
Clause references: Single-number Rw rating per section 4.1, spectrum adaptation terms C and Ctr per section 4.2
ISO 717-2:2020
ImplementedAcoustics — Rating of sound insulation in buildings — Part 2: Impact sound insulation
Impact sound insulation rating for floor assemblies in the STC/Rw calculator. Includes spectrum adaptation term CI for evaluation of walking noise.
Clause references: Weighted normalised impact sound pressure level Ln,w per section 4.1
ASTM E1130
ImplementedStandard Test Method for Objective Measurement of Speech Privacy in Open Plan Spaces Using Articulation Index
Full Articulation Index calculation with band-weighted S/N analysis per ANSI S3.5. Speech Privacy Class (SPC) classification with real-time feedback in the Speech Privacy Calculator. Masking spectrum recommendations follow ASTM E1130 neutral curve.
Clause references: Articulation Index calculation, Speech Privacy Class classification (Confidential/Normal/Marginal/Poor)
ISO 3382-3:2012
ImplementedAcoustics — Measurement of room acoustic parameters — Part 3: Open plan offices
Open plan office acoustic parameters: spatial decay rate (D2,S), distraction distance (rD where STI < 0.50), and privacy distance (rP where STI < 0.20). Computed via binary search over distance-dependent Articulation Index model.
Clause references: D2,S (spatial decay rate) per section 4.2, rD (distraction distance), rP (privacy distance), Lp,A,S,4m
ASTM E1374
ImplementedStandard Guide for Open Office Acoustics and Applicable ASTM Standards
Design framework for the Speech Privacy Calculator. Partition height, ceiling absorption, furniture density, and sound masking level recommendations follow ASTM E1374 guidelines.
Clause references: Open office acoustic design guidance, cross-references to E1130 and E1111
Green Building Certifications
Acoustic compliance evidence for the world's leading green building rating systems. Generate certification-ready documentation in one click.
WELL v2 — S01 Sound Mapping / S02 Maximum Noise Levels
ImplementedWELL Building Standard v2 — Sound Concept
Automated compliance checking against WELL v2 Sound concept thresholds. Generates evidence documentation for project teams submitting to the IWBI. Covers background noise levels, reverberation time limits, and speech privacy requirements for all WELL-defined space types.
Clause references: S01 (Sound Mapping), S02 (Maximum Noise Levels), S07 (Sound Masking if applicable)
LEED v4.1 EQ — Acoustic Performance
ImplementedLEED v4.1 — Indoor Environmental Quality: Acoustic Performance Credit
Compliance reporting for all three LEED acoustic performance options. RT60 and background noise analysis mapped to LEED space type categories. Exportable evidence packages for USGBC review.
Clause references: Option 1 (HVAC background noise), Option 2 (Sound isolation), Option 3 (Reverberation time)
BREEAM Hea 05 — Acoustic Conditions
ImplementedBREEAM — Health and Wellbeing: Acoustic Conditions
Assessment against BREEAM acoustic performance criteria for healthcare, education, residential, and commercial buildings. Supports evidence generation for BRE Global assessors.
Clause references: Hea 05 credits 1-3 (indoor ambient noise, sound insulation, room acoustics)
National Building Codes
Country-specific acoustic regulations and building code requirements. AcousPlan generates jurisdiction-specific compliance reports for 11 national and international standards.
BB93:2015
United KingdomAcoustic Design of Schools: Building Bulletin 93
Full compliance checking for UK school acoustics including maximum RT60 by room type, background noise levels (BNL), and airborne/impact sound insulation between spaces.
Clause references: Table 1.2 (RT60 limits), Table 1.3 (indoor ambient noise levels), Section 1.4 (sound insulation)
DIN 4109:2018
GermanySchallschutz im Hochbau — Sound insulation in buildings
Airborne and impact sound insulation verification for residential, commercial, and mixed-use buildings per German national requirements. Supports both standard and enhanced (SSt) protection levels.
Clause references: Table 2 (Rw requirements), Table 7 (Ln,w requirements), Beiblatt 2 (enhanced levels)
NCC 2022 / AS 2107:2016
AustraliaNational Construction Code Volume 1 Part F5 + AS 2107 Acoustics
Combined NCC and AS 2107 compliance for Australian projects. Sound insulation requirements per NCC Volume 1, and recommended internal noise levels per AS 2107 for all building classifications.
Clause references: NCC F5.5 (sound insulation), AS 2107 Table 1 (recommended noise levels)
NRA 2000
FranceNouvelle Reglementation Acoustique — French Acoustic Regulations
French regulatory compliance for residential buildings including standardised level difference DnT,A, standardised impact sound pressure level L'nT,w, and equipment noise limits.
Clause references: Articles 3-6 (DnT,A airborne), Article 7 (L'nT,w impact), Annex (RT60 targets)
IBC 2021 / ANSI S12.60-2010
United StatesInternational Building Code + Acoustical Performance Criteria for Classrooms
US building code compliance for sound insulation (STC 50/IIC 50 minimum) and classroom acoustics (RT60 max 0.6s for enclosed classrooms, 0.7s for core learning spaces with volumes up to 283 cubic metres).
Clause references: IBC Section 1207 (STC/IIC ratings), ANSI S12.60 Section 5 (classroom criteria)
EN 12354-1:2017
European UnionBuilding acoustics — Estimation of acoustic performance from element performance
Prediction model for airborne sound insulation between rooms using element-based calculations. Accounts for direct transmission through separating elements and flanking transmission through connected building elements.
Clause references: Section 4 (direct transmission), Section 5 (flanking transmission), Annex B (junction model)
ISO 16283-1:2014
InternationalAcoustics — Field measurement of sound insulation in buildings — Part 1: Airborne
Field measurement methodology for airborne sound insulation. AcousPlan supports import and analysis of field measurement data per this standard, with automatic DnT,w calculation and uncertainty estimation.
Clause references: Section 7 (measurement procedure), Section 8 (low-frequency procedure), Annex A (uncertainty)
SS 25268:2007
SwedenAcoustics — Sound classification of spaces in buildings
Swedish sound classification system with four performance classes (A through D). AcousPlan evaluates room designs against all four classes for reverberation time, airborne sound insulation, and impact sound insulation.
Clause references: Table 3 (Sound Class A-D), Section 5 (reverberation time), Section 6 (impact sound)
ASHRAE 189.1-2020
United StatesStandard for the Design of High-Performance Green Buildings
Acoustic criteria for high-performance green buildings and a prerequisite for LEED v4.1. NC curve targets for offices (≤40), conference rooms (≤35), and libraries (≤25). STC ≥50 for dwelling units. References ANSI S12.60 for classroom acoustics.
Clause references: Section 8 (Indoor Environmental Quality — Acoustics)
WHO Environmental Noise Guidelines 2018
InternationalEnvironmental Noise Guidelines for the European Region
Indoor and environmental noise level recommendations for health protection. Indoor noise targets — bedrooms ≤30 dB(A) night, living rooms ≤35 dB(A), classrooms ≤35 dB(A). Provides environmental noise context for facade design and urban planning.
Clause references: Chapters 1-5 (indoor and environmental noise recommendations)
NBR 15575:2021
BrazilDesempenho de edificações habitacionais — Residential Building Performance
Mandatory acoustic performance standard for Brazilian residential buildings. Three-tier classification system (Mínimo/Intermediário/Superior). Wall DnT,w ≥45/50/55 dB. Floor L’nT,w ≤66/56/51 dB. Facade D2m,nT,w scaled by external noise exposure class.
Clause references: Parts 3-5 (walls, floors, roofing — acoustic performance requirements)
Document & Process Standards
Engineering process and cost estimation standards that govern how AcousPlan structures its outputs and cost recommendations.
ISO/IEC 29148:2018
AlignedSystems and software engineering — Life cycle processes — Requirements engineering
AcousPlan's requirement specifications, calculation engine architecture, and validation test suites follow ISO 29148 structure for traceable requirements management.
ICMS 3rd Edition
AlignedInternational Construction Measurement Standards — Cost classification framework
Construction cost estimates in AcousPlan's acoustic treatment recommendations follow the ICMS classification hierarchy (Level 1-4) for consistent cost reporting across jurisdictions.
AACE 18R-97
AlignedCost Estimate Classification System — As Applied in Engineering, Procurement, and Construction
Acoustic treatment cost estimates are classified per AACE Class 1-5 system, with appropriate accuracy ranges communicated to users based on design maturity level.
RICS NRM 1
AlignedRICS New Rules of Measurement — Order of cost estimating and cost planning for capital building works
UK-targeted cost outputs follow NRM 1 elemental structure, enabling direct integration with quantity surveyor cost plans and RIBA stage-gate cost reporting.
ISO 16739:2013
AlignedIndustry Foundation Classes (IFC) for data sharing in the construction and facility management industries
IFC2x3 and IFC4 file import with automatic room extraction, geometry analysis, and material matching against 5,678-entry database. Enables BIM-to-acoustic workflow for Revit, ArchiCAD, and other IFC-compliant authoring tools.
Competitor Conformance Matrix
How AcousPlan's standards coverage compares to other acoustic design tools. Data based on publicly available product documentation as of 2024.
| Standard | AcousPlan | EASE 5 | ODEON | Treble | VRASQA | Sarooma | Acouso |
|---|---|---|---|---|---|---|---|
| ISO 3382-1 (Room parameters) | ✓ | ✓ | ✓ | ✓ | ✓* | ✗ | ✗ |
| ISO 3382-2 (RT60) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| ISO 354 (Absorption coefficients) | ✓ | ✓ | ✓ | ✓ | ✓* | ✓* | ✓* |
| IEC 60268-16 (STI) | ✓ | ✓ | ✓ | ✓* | ✗ | ✗ | ✗ |
| ISO 717-1 (Rw airborne) | ✓ | ✓* | ✗ | ✗ | ✗ | ✗ | ✗ |
| ISO 717-2 (Ln,w impact) | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ |
| WELL v2 Sound | ✓ | ✗ | ✗ | ✓* | ✗ | ✗ | ✗ |
| LEED v4.1 EQ Acoustic | ✓ | ✗ | ✗ | ✓* | ✗ | ✗ | ✗ |
| BREEAM Hea 05 | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ |
| BB93:2015 (UK) | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ |
| DIN 4109:2018 (DE) | ✓ | ✓* | ✓* | ✗ | ✗ | ✗ | ✗ |
| NCC / AS 2107 (AU) | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ |
| NRA 2000 (FR) | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ |
| IBC / ANSI S12.60 (US) | ✓ | ✓* | ✗ | ✗ | ✗ | ✗ | ✗ |
| EN 12354-1 (EU) | ✓ | ✓* | ✓* | ✗ | ✗ | ✗ | ✗ |
| ISO 16283-1 (Field) | ✓ | ✓* | ✗ | ✗ | ✗ | ✗ | ✗ |
| SS 25268 (SE) | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ |
| ASHRAE 189.1 (US) | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ |
| WHO Noise Guidelines | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ |
| NBR 15575 (BR) | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ |
* Partial support indicates the tool provides some functionality related to the standard but does not offer full clause-level compliance checking or evidence generation.
Frequently Asked Questions
Is AcousPlan ISO 3382 compliant?
Yes. AcousPlan fully implements both ISO 3382-1:2009 for performance spaces and ISO 3382-2:2008 for ordinary rooms. Room acoustic parameters including EDT, T20, T30, C80, C50, D50, Ts, G, and lateral fraction are calculated across six octave bands (125 Hz to 4 kHz). RT60 prediction uses both the Sabine equation (Annex A.1) and the Eyring equation (Annex A.2), with automatic model selection based on average absorption coefficient.
Does AcousPlan support WELL v2 certification?
Yes. AcousPlan checks all three parts of the WELL v2 Sound concept: S01 Sound Mapping for ambient noise assessment, S02 Maximum Noise Levels for background noise thresholds, and reverberation time limits per space type. The platform generates WELL-ready evidence documentation that project teams can submit directly to the IWBI for certification review, saving weeks of manual compliance preparation.
Can AcousPlan generate LEED EQ evidence?
Yes. AcousPlan produces compliance reports against the LEED v4.1 EQ Acoustic Performance credit covering all three options: Option 1 for HVAC background noise, Option 2 for sound isolation between spaces, and Option 3 for reverberation time. Reports include the specific measurements, calculations, and pass/fail determinations needed for USGBC review. Evidence packages can be exported as PDF or DOCX.
Which national building codes does AcousPlan support?
AcousPlan supports eleven national and international building codes: UK BB93:2015 for school acoustics, Germany DIN 4109:2018 for sound insulation, Australia NCC 2022 / AS 2107 for building acoustics, France NRA 2000 for residential acoustic regulations, USA IBC 2021 / ANSI S12.60 for building codes and classroom acoustics, EU EN 12354-1 for element-based prediction, ISO 16283-1 for field measurements, Sweden SS 25268 for sound classification, ASHRAE 189.1-2020 for high-performance green buildings, WHO Environmental Noise Guidelines 2018 for health-based noise targets, and Brazil NBR 15575:2021 for residential building performance.
How does AcousPlan compare to EASE for standards compliance?
EASE 5 excels at loudspeaker placement and electroacoustic venue simulation with strong ISO 3382-1 and IEC 60268-16 support. However, EASE lacks built-in compliance reporting for WELL v2, LEED v4.1, and BREEAM, and does not include national building code checks. AcousPlan covers the full compliance lifecycle from room acoustic prediction through green building certification evidence to national code verification, all in one platform.
Is AcousPlan suitable for government and institutional projects?
Yes. Clause-level traceability means every calculation in AcousPlan can be audited back to its source standard and equation reference. This level of documentation is essential for government procurement, institutional projects, and any engagement requiring independent verification. The calculation transparency feature shows all seven steps from input validation through equation selection to final result, meeting the evidence requirements of public sector acoustic consultants.
Does AcousPlan provide calculation traceability?
Every RT60, STI, and compliance result in AcousPlan includes the standard clause reference, the specific equation used, all input parameters, intermediate calculation steps, and the final result with units. The seven-step calculation transparency view shows input validation, surface area computation, absorption calculation, equation selection (Sabine or Eyring), frequency-band computation, parameter derivation, and compliance assessment against the selected standard.
What acoustic standards will AcousPlan support next?
The AcousPlan roadmap includes DIN 18041 for German room acoustic design quality, DGNB acoustic credits for the German Sustainable Building Council certification, ISO 9613 for outdoor sound propagation modelling, and AS/NZS 2107:2016 updates for Australian and New Zealand recommended noise levels. Standards are prioritised based on user demand and regional market requirements. Feature requests can be submitted through the platform.
Standards-compliant acoustic design starts here
Join architects and acoustic consultants who trust AcousPlan for ISO-traceable calculations and code-compliant reports.