120 Hz Test Tone 1 Hour

120 hertz test tone with a single sound frequency that runs for 1 hour.

[mybreathfriend]

Wow, this is peaceful. I am sincerely impressed.

[superdude]

Why is the sound oscillating like that? A constant tone would be better.

[mybreathfriend]

After listening to this for just a couple of minutes, i turned it off. A few moments later, i heard it again but my phone was still off. It's coming from my fridge. I never heard it before. That's cool.

[Auroral_Anomaly]

Electric power lines make this sound since they oscillate at 60 hz and go up and down and 120 hz.

[DuelingBongos]

I don't hear anything. Should I be wearing stereo headphones to hear the tone?

[chris]

Not all devices can play sounds that low. Watch a video of an increasing frequency sweep that displays the frequency and when you start hearing something that's the lowest noise your speaker/headphone can produce