NAH is Near Field Acoustic Holography. A single microphone can measure amplitude and FREQUENCY. By USING multiple quality microphones with good phase matching characteristics, tests can be performed to show direction, particle VELOCITY and intensity. NAH software systems can utilize an array of microphones to enable engineers to reduce the time and COST to minimize noise and vibration, by PERFORMING sound pressure mapping and holography tests for noise sources and transmission paths on 2D (planar) surfaces.

NAH is Near Field Acoustic Holography. A single microphone can measure amplitude and frequency. By using multiple quality microphones with good phase matching characteristics, tests can be performed to show direction, particle velocity and intensity. NAH software systems can utilize an array of microphones to enable engineers to reduce the time and cost to minimize noise and vibration, by performing sound pressure mapping and holography tests for noise sources and transmission paths on 2D (planar) surfaces.