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When selecting a data acquisition system for acoustics, NVH, and vibration testing, it is not enough to compare sampling rate, ADC resolution, or channel count alone. The evaluation should also consider field deployment, synchronization, power supply, data storage, analysis workflow, and report delivery. This article compares the application boundaries of SonoDAQ + OpenTest and NI [...]
Valve internal leakage is difficult to detect because the leak path is hidden inside the valve body. Learn how contact ultrasound supports repeatable MP1-MP5 verification, field leakage reference values, and maintenance decisions in chemical, coal chemical, and natural gas applications.
When evaluating the noise of an appliance, a single sound level meter reading only indicates how loud the sound is at one specific measurement location. It does not directly represent the inherent noise emitted by the product itself. This article begins by explaining the difference between sound pressure level and sound power level, clarifying why [...]
The key to a multi-device data acquisition system is not simply the number of channels, but whether all acquired data share the same time base. In applications such as acoustic arrays, sound source localization, NVH analysis, and distributed vibration testing, even a small timing offset can affect phase relationships, time-of-arrival differences, and source localization accuracy. [...]
In motor, headphone, speaker, and complete product testing, anomalous sound is often not a simple sound pressure level issue. Many early defects appear as slight rubbing noise, whistling, buzz, anomalous noise, or changes in spectral details. Traditional electroacoustic testing and manual listening inspection are difficult to keep consistent in large-scale testing. Using TWS earbud AI [...]
When validating quietness for home appliances, fans, precision motors, medical devices, transformers, and consumer electronics, we are not only asking whether a product is "loud" or "quiet." We need to know where the sound comes from, under which operating condition it appears, and in which frequency range it becomes uncomfortable. A quiet product can sometimes [...]
OpenTest v2.0.0 Beta was released in June. This update introduces Sequence Mode for the first time, adding test workflow orchestration capabilities to OpenTest. Users can now configure steps such as acquisition, analysis, storage, and reporting into repeatable standardized workflows. The new version also improves batch channel parameter setup, project import/export, sound level meter calculation rate [...]
Wearable audio devices are becoming smaller, smarter, and more complex. From TWS / OWS earbuds, bone-conduction earphones, hearing aids, smart glasses, and smart watches or smart bands, modern wearable devices can no longer be judged only by whether their acoustic output follows a frequency response curve. In real production environments, a device may pass frequency [...]
Wind tunnels were originally built to see the flow. Within a controlled test section, engineers direct airflow at a specified velocity over vehicles, wings, UAVs, rotor blades, or scale models. By analyzing pressure distributions, aerodynamic forces and moments, smoke visualization, Particle Image Velocimetry (PIV), and balance measurements, they can determine whether flow separation occurs, drag [...]
In modern metrology labs, accurately measuring product noise requires more than just sound pressure values. This case study demonstrates how a metrology institute implemented a repeatable, multi-point sound power measurement workflow using SonoDAQ Pro and OpenTest, enabling reliable comparison of servers, fans, home appliances, and motors under different operating conditions. Learn how synchronized data acquisition, [...]
The CRY8020 Series SonoCam Pocket Acoustic Camera has officially launched. Designed by CRYSOUND for daily walkdowns, SonoCam Pocket brings acoustic imaging, leak detection, and partial discharge screening into a lighter field workflow, helping inspection teams locate abnormal sound sources faster and support follow-up decisions with visual evidence. The goal is simple: make acoustic imaging easier [...]
This guide helps users quickly set up and perform sound power measurement using a hemispherical sound power measurement frame, the SonoDAQ Pro data acquisition front-end unit, and OpenTest. Stage Completion Criteria 1. Frame installation The hexagonal base is stable, the 6 arc tubes are tightened, and the top cover is secured without shaking. 2. Microphone [...]
