This sound frequency meter circuit is simple to build and can be constructed in a portable format. In can measure frequencies with a minimum level of 10 mVrms and a maximum frequency of up to 100kHz.
With loudspeakers, an important parameter is the frequency at which their cones resonate. This clever Arduino-based tester ...
Beaverton, Oregon—If you're developing a multi-channel audio product such as a Dolby 7.1 Surround Sound or automotive sound system, here's news of a PC-controlled tester from Audio Precision, Inc.
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