Bobby shares the answer to this question: Ever wonder how audio frequency affects music? This is a description of the range of audio frequency all the way from Sub-Bass to Brilliance. It explains the differences between frequencies, and gives examples of each tier of sound. This demonstrates the pros and cons of using each audio band in musical composition.
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A Description Of The Audio Frequency Bands
There may be apps that do that. You can definitely find spectrum analyzers that will measure ultra low.
Is there an APP that can measure the ultra low frequency levels?
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