May 3, 2007, Depew, NY, USA – PCB Piezotronics (PCB®) a world leader in the design and manufacture of vibration, acoustic, pressure, force, and torque sensors, has introduced Model 377A13, a prepolarized, 1/2" pressure response type microphone, operating from ICPâ sensor power, which offers extended frequency capability to 20k Hz (+ 2 dB). This microphone is designed for applications requiring matching magnitude and phase at any position, to properly measure changes caused by microphone presence in the sound field, such as those required in confined spaces, like small cavities, couplers, or impedance tubes.
Previously, almost all ½" pressure response microphones were limited to a maximum frequency of 10k Hz to 12k Hz, and thus could not be used in applications requiring full audible range. New Model 377A13 has a frequency range of 4 to 20k Hz
(+ 2 dB). The maximum linear dynamic range has been increased to 160 dB, with a low noise floor rating of 20 dB(A). It has an operating temperature of -40 to +120 oC.
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