When a device that reproduces sound and contains speakers, headphone drivers, or microphones, is approved for mass production, how you test the product may ultimately have the largest influence on optimum profitability.
In comparison to electronic (analog or digital) audio test, evaluating the acoustic performance of loudspeakers presents several complexities, including measurement equipment and the test environment.
Measuring and characterizing the audio quality of headphones, earbuds, and headsets present unique challenges to both the R&D lab and on the production line.
MEMS Mics and Mic Arrays
The heart of any smart device is the Intelligent Virtual Assistant (IVA), enabling the use of voice commands which are acquired via the integrated MEMS microphone or an array of such microphones (mics).
At the core of the smart speaker is the Intelligent Virtual Assistant (IVA), enabling the use of voice commands. This same IVA technology is being added to all sorts of appliances, such as thermostats, set top boxes, etc.
Hearing aids are truly unique from an audio test perspective. They are one of the few audio devices that have both acoustic input and acoustic output, and even the simplest ones have microphones, a power amplifier, digital signal processor, loudspeaker and controls integrated into a tiny, battery-powered package.