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Learn how to build a repeatable acoustic imaging walkdown for leak detection, PD screening, HVAC troubleshooting, reporting, and repair verification.
How do CRYSOUND measurement microphones and calibrators perform when independently tested against established reference equipment-and pushed beyond typical laboratory conditions? In the September 2026 issue of audioXpress, technology consultant and long-time audio equipment designer Stuart Yaniger conducted a hands-on review of three CRYSOUND products: The review covered calibration accuracy, frequency response, environmental stability, self-noise, ruggedness, and [...]
Some fans do not sound very loud, yet they may still feel sharp, buzzing, or annoying over time. Others can run continuously without drawing much attention. This difference is not determined by decibels alone. It is also related to frequency distribution, tonal components, loudness, sharpness, roughness, and fluctuation strength. Using fan noise as an example, [...]
Learn how CRYSOUND combines AI listening, acoustic fixtures, OpenTest software, and production data for headphone defect detection at end of line.
In multichannel acoustic testing, entering microphone model numbers, sensitivities, and calibration data one channel at a time is slow and prone to error. TEDS allows a data acquisition system to read key parameters stored in a microphone or preamplifier, helping engineers configure channels faster and maintain consistent test settings. This article tests the CRYSOUND CRY3203-S01 [...]
Many acoustic laboratories, automotive NVH teams, consumer-electronics developers and third-party testing organizations already operate measurement systems built around HBK/Brüel & Kjær, GRAS or PCB Piezotronics products. When existing systems need more channels, replacement sensors, shorter procurement cycles or a complete platform update, engineers often ask a practical question: Which CRYSOUND products should be evaluated against [...]
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 [...]
