Sound Power Testing System
The Sound Power Testing System is an integrated hardware and software solution designed for product noise evaluation, regulatory certification, and acoustic performance verification. It consists of a multi-channel acoustic data acquisition unit, microphones/sound intensity probes, synchronized acquisition modules, measurement point layout and parameter management software, sound power calculation and analysis software, and a report generation module. The system standardizes the sound power testing process into a repeatable and reusable engineering test workflow.
The system supports measurement point layout guidance, multi-channel synchronous data acquisition, K1/K2 corrections, sound pressure level and sound power level calculations, data consistency checks, and customizable report generation. It is suitable for noise rating, R&D benchmarking, and pre-certification validation of products such as industrial equipment, construction machinery, automotive and aerospace components, household appliances and consumer electronics, as well as power generation and energy storage systems.
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Product Highlights
Typical Application Scenarios
Consumer Electronics & Home Appliances
Conduct sound power measurements on household appliances for noise rating assessment, production consistency verification, and acceptance testing.
General Industrial Equipment
Perform sound power testing on rotating machinery, power transmission systems, and cabinet-mounted equipment for competitive noise benchmarking and noise reduction optimization.
Automotive & Transportation
Measure the sound power of electric drive systems, thermal management units, and HVAC components for supplier solution comparison and NVH (Noise, Vibration, and Harshness) validation.
Data Centers
Conduct noise testing on servers and equipment racks to optimize cooling strategies and control cumulative noise levels.
Building Mechanical & Electrical Systems
Perform sound power measurements on HVAC and ventilation systems for environmental noise assessment and control.
General Industrial Equipment
Automotive & Transportation
Consumer Electronics
Building Mechanical & Electrical Systems
Comprehensive Standards Coverage
OpenTest currently supports multiple sound power measurement standards based on the sound pressure method, including ISO 3744, ISO 3745, and ISO 3746. Support for sound intensity method algorithms is under development, with the goal of providing a single software platform capable of covering all customer sound power testing scenarios.
OpenTest automatically calculates K1 and K2 correction factors, applies background noise and environmental corrections, and ensures that sound power measurement results are both accurate and compliant with applicable standards.
In addition to generating sound power results, OpenTest fully preserves raw time-domain waveforms and frequency-domain data, while associating and recording key information such as measurement point details, calibration records, and environmental parameters. This enables in-depth result analysis, traceability, and efficient data management.
Support for Multiple Sound Power Measurement Standards
Fast and Efficient Test Environment Setup
We provide standard hemispherical microphone frames (radius 1 m and 1.5 m) featuring a compact and practical mechanical design for quick assembly, disassembly, and positioning. This helps users significantly reduce test setup time and improve overall testing efficiency.
For cuboid measurement surfaces, OpenTest can automatically calculate the coordinates of each microphone based on parameters such as the reference box dimensions and measurement distance. Users can quickly complete microphone placement without performing complex manual calculations, streamlining the entire test preparation process.
Standard Hemispherical Microphone Frames Available
Automatic Microphone Coordinate Calculation
Diverse and Intuitive Result Visualization
OpenTest provides multiple visualization formats, including real-time waveforms, measurement point layout diagrams, sound pressure level (SPL) and sound power level (PWL) curves, 1/3-octave band spectra, and tabulated data, enabling users to quickly review and validate measurement results.
All charts support zooming, local magnification, and range-based viewing, allowing engineers to perform detailed analysis of critical frequency bands or abnormal time periods with ease.
To streamline reporting and collaboration, OpenTest supports one-click export of all charts and tables as high-resolution images or data files, making it convenient to incorporate results into test reports, technical reviews, and project presentations.
Real-Time Waveform Display
Multiple Data Visualization Formats
Customizable Reporting and One-Click Export
OpenTest includes built-in report templates compliant with ISO standards, automatically compiling test information, measurement point configurations, acquisition parameters, calculation results, and key charts into professional reports. This significantly reduces the time and effort required for documentation.
The reporting module supports customizable report structures and content, allowing users to add corporate branding elements such as company logos, tester information, comments, and custom sections. Users can also selectively display specific data and analysis results according to project requirements.
With one-click report export, OpenTest automatically generates complete test reports without the need for additional data processing or manual editing, improving efficiency and ensuring consistency across projects.
Built-In ISO-Compliant Report Templates
Customizable Report Structure and Content
High-Performance Synchronous Acquisition for Reliable and Consistent Test Data
SonoDAQ Pro supports multi-channel synchronous data acquisition, with a single unit capable of covering up to 24 measurement points. For larger test setups, multiple units can be expanded through daisy-chain configurations. Powered by PTP (Precision Time Protocol) synchronization technology, the system maintains an inter-channel phase error of ≤ 100 ns, ensuring highly accurate and consistent measurements across all channels.
For applications involving a large number of microphones, users do not need to calibrate each microphone individually using an acoustic calibrator. Instead, SonoDAQ Pro can automatically configure microphone sensitivities based on TEDS (Transducer Electronic Data Sheet) information, significantly simplifying system setup and reducing preparation time.
Designed for demanding industrial environments, SonoDAQ Pro features 1000 V channel isolation and strong immunity to electromagnetic interference, ensuring stable and reliable operation even in complex electrical environments.
PTP Synchronization
Strong Anti-Interference Capability
Next-Generation Data Acquisition Platform - SonoDAQ Pro
SonoDAQ Pro is a next-generation data acquisition platform featuring a modular architecture. A single chassis supports up to six functional modules and can accommodate up to two battery modules, ensuring reliable operation during field and outdoor testing. The platform also supports flexible channel and functionality expansion, allowing one system to address a wide range of testing requirements.
Built for high-precision measurements, SonoDAQ Pro delivers exceptional hardware performance with 32-bit resolution, 160 dB dynamic range, 204.8 kHz sampling rate, and an ultra-low -117 dBV noise floor, providing outstanding measurement accuracy across demanding acoustic and vibration applications.
The platform supports both IEPE sensor excitation and TEDS technology, eliminating the need for external microphone power supplies and enabling rapid deployment of microphones and sensors for efficient test setup.
Modular Configuration
Exceptional Hardware Performance
Technical Specifications
Main Features
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Get in touch
If you are interested or have questions about our products, book a demo and we will be glad to show how it works, which solutions it can take part of and discuss how it might fit your needs and organization.
