Professional Audio & Video Solutions

Audio Precision Measurement Microphones

Audio Precision Measurement Microphones

When you want to analyze and design Speakers, microphones, Smartphones and other acoustics you need good microphones and an good Audio Analyzer.

    APx software and the Microphones

  • The AP microphone family includes one ¼-inch and two ½-inch precision measurement microphone systems, as well as a ¼-inch array microphone and an occluded ear simulator. All units are prepolarized, TEDS-compliant and ICP®/CCP powered. The three precision microphones are calibrated and delivered with a certificate of calibration, ensuring the utmost of confidence in measurement results when paired with calibrated instruments such as an APx500 Series Audio Analyzer and APx1701 Transducer Test Interface. Whether you’re testing loudspeakers, headphones or microphones, make sure to also check out the APx1701 Transducer Test Interface. The APx1701 integrates instrument-grade amplifiers and microphone power supplies for designers and production test engineers seeking clear insight into the behavior of their electro-acoustic devices.

  • 378M31 1/2″ Measurement Microphone

  • The Audio Precision model 378M31 is a general purpose measurement microphone recommended for high accuracy applications where high sensitivity is required for free-field response measurements. The 378M31 is a microphone system, comprised of a prepolarized microphone capsule combined with a low-noise preamplifier. The preamp is designed to operate on ICP® sensor power, and can be used with most 2–20 mA constant current power (CCP) microphone power supplies, including the APx1701. It carries embedded TEDS calibration and identification data; the preamplifier output is available on a BNC jack.

  • 378M32 1/2″ Measurement Microphone

  • The Audio Precision model 378M32 has a flat response in applications where high frequencies (up to 40 kHz) need to be measured very accurately. As an alternative to a standard high sensitivity (50 mV/Pa) microphone, it has an enhanced upper dynamic range and doesn’t overload or saturate for measurements above 136 dB. The 378M32 is a microphone system, comprised of a prepolarized microphone capsule combined with a low-noise preamplifier. The preamp is designed to operate on ICP® sensor power, and can be used with most 2–20 mA constant current power (CCP) microphone power supplies, including the APx1701. It carries embedded TEDS calibration and identification data; the preamplifier output is available on a BNC jack.

  • Main Advantages

    High Quality
  • Good pricing
  • Perfect combination with APx software
  • Flexible in use with APx 1701 interface
  • Calibtated

Related Solutions

  • SoundWireSM Audio Testing with APx and LnK

    Testing semiconductor audio devices with a SoundWire interface using an Audio Precision APx audio analyzer is conceptually straightforward; the test strategy and implementation is no different than with any other IC device.

    The challenge is the connection to the SoundWire interface, and configuring the SoundWire device. We can with APx and LNK interface!

  • Audio Precision Adds STI (STIPA) Measurement Capability to APx500 Software

    Quantifying the Intelligibility of Speech

    Developed as a method for quantifying the intelligibility of speech with respect to a transmission medium—for example a room, an intercom system, a radio link—STI is an objective measure that provides a single rating between 0 and 1 that predicts the likelihood of syllables, words and sentences being comprehended within the intended medium. The rating is broken down into qualification bands ranging from “bad” (0 to 0.36), to “excellent” (0.75 to 1.0).

  • Lip-Sync The time alignment of the audio relative to the video

    I think you know the problems when audio and video are not in sync, what to do?

    We can give you the figure when you are out of sync to get it back easy.

    In both professional and consumer television and A/V systems, divergent audio and video signal paths and the delay inherent in digital processing provide many opportunities for the program sound and picture to fall out of synchronization

Supplier

  • Audio Precision

    Measurement solutions for all things audio.

    Audio measurement- and audio analysis instruments.

Related Blog messages

  • What is new in APx software 4-4

    The latest release of APx500 audio measurement software, version 4.4, is available for download at AP.com.

    The release includes minor feature improvements, including regulation enhancements and the option to maintain Bluetooth® connection even when Bluetooth is not selected as output or input.

    APx500 Measurement Software
    (Must be a registered user of AP.com
    and logged in to download)

  • Perceptual audio analyse met APx 525

    PERCEPTUAL AUDIO TESTING (PESQ) OPTION

    APx500 v3.0 now supports a PESQ (Perceptual Evaluation of Speech Quality) option for use with APx audio analyzers. Obtain MOS results directly in APx projects,

  • PDM option for APx

    Pulse Density Modulation (PDM) is a one-bit, high rate data stream that conveys a signal by modulating the density of the pulses. A typical application for PDM is the Micro-Electrical-Mechanical System (MEMS) microphone found on smartphones.

    The APx PDM option provides direct connectivity for audio devices that have a PDM output (such as a MEMS microphone) or input (such as the decimator on a smartphone chip). In addition to all the standard audio measurements, APx provides variable DC voltage, variable sample rate, and a PSR (power supply rejection) measurement to test the device’s full operating parameters. No other analyzer combines direct PDM connectivity with APx’s best in class speed, ease-of-use, and performance.