If I understand this correctly then what you see and hear is the real signal (played as audio), but in the second version the frequency is simply shifted up a notch to make it easier to hear.
3 solar masses converted to gravitational radiation 1.3 billion years ago for us to make their sounds into ringtones :) fair enough...
Gravitational waves has been detected!
Courtesy of LIGO http://www.ligo.org/
The LIGO collaboration just announced their detection of gravitational waves! This is truly a historic moment.
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