Test & Measurement

Acoustic analyser tests speakers, microphones

20th November 2020
Mick Elliott

The APx517B acoustic analyser from Audio Precision is specifically designed, configured and built for the production-line testing of speakers, microphones, headphones, headsets and consumer electronics incorporating speakers and microphones.  

It enables manufacturers to deploy an integrated acoustic test system.Because it is an integrated system combining audio analyser (signal generation and acquisition), power amplifier, headphone amplifier, and microphone power supply, along with any required digital interface such as Bluetooth, the APx517B can reduce setup and reconfiguration time and avoid production downtime. The APx517B comes with an accredited ISO/IEC 17025 calibration.

The analyser has a three-year warranty.

In its base configuration, APx517B is a ready-to-go system for measuring analog speakers, microphones, headphones, or headsets.

For digital devices, APx517B has a module slot for the addition of a single APx digital interface module, such as Bluetooth, PDM or HDMI.

On the software side, a standard system provides a core set of measurements and functionality to allow out-of-the-box, fundamental test of acoustic devices: File Analysis, Sequence Mode, Input Signal Monitors (including FFT Monitor), Level & Gain, THD+N, Loudspeaker Product Test (including Rub & Buzz), Stepped Frequency Sweep, Pass / Fail, and Signal Acquisition measurement.

As with APx500 Flex, a trio of Flex Packs is available, each offering different groups of more advanced measurements.

Perceptual audio measurements—including ABC-MRT and POLQA—can likewise be used with Flex. Finally, for the user that needs the base configuration plus just one or two more measurements, à la carte menu of measurements is likewise available.

The APx517B, with 1/2-inch measurement microphone from GRAS Sound & Vibration, setup for the test of a passive loudspeaker.

Audio Precison says that the APx517B is offering AP performance at a production test price.

The base model costs $6,000.

It delivers measurement capability for the functional test of headphones, speakers, drivers and microphones. Configuring the system for specific DUT, interface or measurement requirements is equally affordable for manufacturers.

From base model to more advanced configurations, the APx517 is priced to compete with systems assembled from separate software, soundcard, amplifiers, mic power supplies and digital interface devices, even while eliminating the extra time needed to assemble such systems.

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