• Nougat
        link
        fedilink
        101 month ago

        tl;dr: There are little “chimes” of different lengths that produce sound when struck. The sound is higher than what humans can hear. The four buttons on the remote lift strikers and then drop them against the chimes. It’s basically a toy piano.

        We had one when I was a kid, hand-me-down from grandma. We also had a dog who wore a fairly loose stainless steel choker chain. When he’d bounce around, the chain links would clink, occasionally turning the TV on/off, changing the channel, muting the volume.

        • spicy pancake
          link
          fedilink
          English
          61 month ago

          I had a cheap programmable multicolor LED lightbulb that used this technology but worse, as it used audible chirping produced by an app. The beeps were earsplittingly high pitched and had to be played LOUDLY to work.

          Occasionally the bulb sensor would hear god knows what noise from outside (nothing in that neighborhood sounded even remotely like the app’s digital harpy screeches) and SUDDENLY ACTIVATE ITS PARTY STROBE LIGHT MODE.

          I let my roommate keep it when I moved out.

          • @Valmond@lemmy.world
            link
            fedilink
            English
            21 month ago

            The phone system worked like that! Rumors had it some people could do the sound to a number …

              • @Valmond@lemmy.world
                link
                fedilink
                English
                11 month ago

                After the rotary phones who used “ticks” to spell out numbers (you could hang up quickly to spell phone numbers, like click-click-click meant “2”) the newer used sound burst, or short beeps. Beep, boop, baap meant like 735. You could buy a little beeper that dialed a phone number for you. History goes people could mimic the beeps to dial a number, like taking up a phone and go beoueoeop and call comeone.

                Phreaking (van eck) is when you listen in on radio waves from electronic equipment, as cool as it is, it has nothing to do with this little information nugget :-)