The infographic from Visual.ly shows the interesting history of Rock N Roll in America. The graph shows the history of rock’n’roll portraying influential interpretations, different styles, important events. The company allows people to embed the graphic onto their own website simply by clicking on a button right below the graphic. There is a informative timeline on top of the graph that is also very informative.
Read the full article here:
history of rock’n’roll | Visual.ly
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I’m seeking info for sanctuary reverberation absorbsion material ( panels) and best placement.
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?