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Nearfield acoustic holography (NAH) is a non-contact technique used to calculate acoustic properties by taking pressure measurements close to, and parallel to, the source surface. In this NAH measurement demonstration, the PCB high-temp model 377B26 probe microphone was used to evaluate the performance of a carbon nanotube loudspeaker. The model 377B26 probe microphone and preamplifier were selected for this project due to their capability to operate in high-temperature environments of up to and beyond 400 °C. Additionally, the probe tip provided the necessary standoff distance, allowing for the safe routing of cables and mounting of preamplifiers without risking amage to the delicate source. Download this white paper to learn more.