[kirlppyh] Sound as a gravitational wave

A moving mass generates gravitational waves.  Regular audio speakers are a programmable gravitational wave generator: their diaphragm is a moving mass.  Playing a sound repeatedly, in a loop, can aid the recipient doing signal analysis.

If multiple people want to participate in broadcasting, then we face the challenge of playing sound synchronized between multiple playing devices.

All sound generates gravitational waves: air is a moving mass.  A sufficiently sensitive gravitational wave detector anywhere in the universe can eavesdrop on our spoken conversations.  Aliens monitoring gravitational waves might be very confused by us playing the sound of the recently detected black hole merger.