Multiple simultaneous input types, or multi-input, is a capability added to the APx500 audio measurement software in release version 6.0. This new feature enables the concurrent measurement of up to, depending upon the model of APx audio analyzer, 16 channels of digital and 8 channels of analog audio data.

With its built-in test sequencer, reporting engine, and more, Sequence Mode in APx500 software can be very useful for a variety of applications.

APx500 Software provides two distinct tools for verifying a device's capacity to playback a signal for an extended period of time.

As in loudspeaker testing, the measurement of headphones and earbuds involves driving an acoustic transducer, acquiring the result with a microphone and analyzing the signal. Learn three important tips for headphone testing in this post. 

Utilizing APx500 software, learn how to evaluate the performance of DACs, including setup and key measurements.

Learn how to conduct measurements on a batch of devices and display results on one graph for comparison.

New Video! Mike Martin walks through key loudspeaker test methods, typical test setups and then demonstrates a variety of measurements.

New Video! In this session, Joe Begin provides a detailed discussion of how to use a variety of automation and production (or manufacturing) test-oriented features.

Designed to educate engineers and technicians about everything from specific audio measurement applications to getting started with APx, Audio Test Sessions with APx are more in-depth tutorials on audio test.

The Acoustic Response measurement in the APx500 software provides a solution for measuring a loudspeaker's frequency response without an anechoic chamber. 

The measurements of “The Big Six” include phase, crosstalk, and the signal-to-noise ratio. What are they and why are they important?

In audio test, there are a small number of performance benchmarks that are most important when evaluating a device-under-test (DUT). We call them “The Big Six” measurements.

In this post, we describe the relationship between the Generator Level setting and the measured level for arbitrary waveforms, as well as a procedure to help choose an appropriate Generator Level control setting.