When should I use ISO 9614 sound intensity instead of sound pressure?

Use ISO 9614 where background noise is present or the test site cannot be fully controlled; intensity is robust against stray noise and enables in-situ sound power determination.

What do I receive in the report?

A complete ISO-aligned package: Lw results (overall and per band), third-octave tables, spectra and contour visuals, method statement, calibration data and uncertainty evaluation.

Can you help with transmission loss and façades?

Yes. ISO 15186 covers airborne sound insulation using sound intensity. We help verify partitions and building envelopes and recommend corrective actions where needed.

Sound Intensity & Sound Power Measurements (ISO 9614 / 3744 / 3745 / 15186)

End-to-end solutions for sound power determination, transmission loss and diagnostics in real-world environments — guided workflows, traceable data and ISO-compliant reporting.

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Why Sound Intensity?

Sound intensity measures the energy flow of sound and enables sound power determination on the factory floor or in the field — even where background noise is present. Compared with pure sound-pressure methods, it is robust against stray noise and helps engineers quantify what a machine actually emits. Typical outcomes include verified L_w levels, third-octave tables, and uncertainty budgets for audits and acceptance tests.

Standards We Support

ISO 9614-1/-2/-3 — Sound intensity measurement of sound power (grid / scan / engineering)
ISO 3744 / ISO 3745 — Sound power using sound pressure (engineering / anechoic)
ISO 15186 — Airborne sound insulation using sound intensity
IEC 61043 — Instruments for sound intensity measurements

Integrated Measurement Workflow

Pre-checks & calibration — intensity probe check, phase match and background assessment
Acquisition — choose scan (ISO 9614-2) for speed, or point-grid (ISO 9614-1) for repeatability
Computation — apply correct standard; compute L_w, third-octave bands and uncertainty
Reporting — generate ISO-aligned PDF/CSV with tables, contour visuals and pass/fail summaries

Results are traceable and structured for audits: instrument settings, calibration records, time stamps and metadata are stored with the project.

Measurement Methods

Scan (ISO 9614-2) — sweep probe over measurement surface; ideal with higher background noise
Point-grid (ISO 9614-1) — fixed grid for detailed source mapping and repeatability
ISO 9614-3 — engineering method for special environments

Deliverables

Sound power level L_w (A-weighted and per band)
Third-octave tables, contour visuals and spectra
Uncertainty evaluation & acceptance summaries
Export to PDF/CSV for compliance and archives

Typical Applications

Sound power determination — machines, appliances, fans, pumps, compressors, HVAC
Transmission loss / façade — ISO 15186 in situ; verify partitions and building envelopes
R&D and factory QA — engineering change validation and end-of-line checks
Education & labs — transparent vectors and method demonstration

Regional Focus — Saudi Arabia: Trusted by consulting teams in Riyadh and Jeddah for ISO 9614 sound power and ISO 15186 transmission loss verification, with same-timezone support from Norsonic Asia.

Resources

Download the Sound Intensity & Sound Power brochure (ISO methods, workflows, deliverables, kit contents).

Download Brochure (PDF)

Get a Method Recommendation

Not sure if you need scan or grid? Share your setup and we’ll advise the best ISO route and uncertainty budget.

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