We spend a lot of time watching and listening to our smartphones and tablets, but the audio quality of many such product seems to be quite bad. How to find out what is good and what is bad? The answer is testing. Smartphone Audio Quality Testing article tells how the audio quality of smart phones and tablets are tested at Anandtech labs. The same testing methods apply to many other audio devices as well.
Audio testing has interested me for a long time. Years ago I tested PC sound cards and even contributed to Personal Computer Audio Quality Measurements. For more PC sound card measurement information check also AES information document for digital audio – Personal computer audio quality measurements.