![]() ![]() These two traditional tests are known as “Closed Loop” circuit tests. A known signal is played by the loudspeaker, received by the measurement microphone, and fed directly into the Audio Analyzer, producing the results. In a traditional loudspeaker test, the loudspeaker under test is placed at a fixed distance to a calibrated measurement microphone. The signal received by the microphone is fed directly into the Audio Analyzer, producing the results. In a traditional microphone test, the microphone under test is placed at a fixed distance from a calibrated signal-generating speaker. The number of smart devices produced is rapidly growing in this emerging market. Some of them even deliver impressive audio quality. ![]() Most of those devices have an audio interface, such as built-in loudspeakers or microphones to interact with the user. More and more household appliances are getting connected to the smart home network. Smart devices such as smart speakers, mobile devices, personal assistants, smart thermostats, smart security cameras and similar have entered the consumer market during the last couple of years. ![]() How do manufacturers, repairers and re-furbishers test the quality of the acoustic responses of the microphones and speakers in smart devices? ![]()
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