Audio Precision is extending its electro-acoustic test equipment with the introduction of a series of calibrated measurement microphones.
The microphones are free-field, pre-polarised systems, combining mic capsules with low-noise preamplifiers to complement to the company’s APx line of audio analysers, software and accessories. The AP microphone family includes two half-inch and two quarter-inch measurement mics, as well as an occluded ear simulator.
All units are pre-polarized, TEDS-compliant and CCP powered. The microphones are calibrated, ensuring the utmost of confidence in measurement results when paired with calibrated instruments such as the APx515 Audio Analyzer and APx1701 Transducer Test Interface. Each mic is delivered with its own certificate of calibration.
Each Audio Precision measurement microphone and microphone system is TEDS programmed to the IEEE 1451.4 standard for SMART transducers, v1.0 format. TEDS (Transducer Electronic Data Sheet) data contains microphone identification and calibration information that can be read by a connected instrument, such as the Audio Precision APx1701 Transducer Test Interface.
When compared to traditional, externally polarised microphones, pre-polarised systems offer a number of advantages. Specifically, pre-polarised mics offer a lower cost per channel (cabling, power supplies, and preamplifiers), are better suited to environments with changing, or high, humidity, and offer reduced set-up and test time owing to easy access to CCP power, interchangeability with other CCP sensors and measurement efficiency.
‘The addition of measurement microphones to our product portfolio is truly exciting,’ says Audio Precision Chief Executive Office, Dave Schmoldt. ‘For AP system users, it creates an expanded solution for evaluating the analogue, digital and electro-acoustic performance of their audio components, products and systems.’