3 ms·
It's just very convenient to convert some time-frequency domain to sound, even if frequency is shifted for easier hearing (e.g. how they slow down black hole me
by deepsun 5y ago
It's just very convenient to convert some time-frequency domain to sound, even if frequency is shifted for easier hearing (e.g. how they slow down black hole mergers).
That's because human ear is very good at hearing small changes in frequencies. E.g. first movies vere silent not because they couldn't play the audio, but because they couldn't synchronize between the video and audio.
Human eye is very forgiving to uneven or hickking-up video playback, but not the ear.
- danielmittleman 5y agoActually, here's a fun fact: the audio "chirp" that you have heard in association with black hole mergers is not slowed down. The measurement is a gravitational wave, of course, not a sound wave. But when it is played as a sound wave, that's real speed, not slowed. This is actually mostly determined by the frequencies at which the gravitational wave detectors (LIGO and VIRGO) are sensitive, which happen to coincide with acoustic frequencies that your ears can hear.