The Alarm Only
You Can Hear
A phased ultrasonic array that wakes only the targeted sleeper. Your partner hears nothing.
$249 · That's 68¢ a morning for a year of uninterrupted sleep
A phased ultrasonic array that wakes only the targeted sleeper. Your partner hears nothing.
$249 · That's 68¢ a morning for a year of uninterrupted sleep
70 dB where you're sleeping.
Under 30 dB one foot away.
Parametric Directional Audio
Move the listener around the room. Watch the beam respond.
One person needs to wake up. The other doesn't. Traditional alarms don't care. Vibrating wristbands are easy to sleep through. So you've been stuck choosing between being rude and being late.
Your 5:30 AM alarm jolts your partner awake. They lose sleep. You feel terrible. It happens five days a week, 260 mornings a year.
Vibrating bands are easy to sleep through, uncomfortable to wear, and dead by Thursday because you forgot to charge them. A workaround, not a fix.
Sleep disruption erodes patience. Different schedules shouldn't mean shared suffering. Nobody's talked about it, but it's there every morning.
Your partner loses about 20 minutes of sleep every time your alarm goes off. That's 87 hours a year. Beamwave fixes that for less than a dollar a day.
Three acoustic principles combine to create directional audio — no headphones, no speakers under pillows, no wristband workarounds.
19 piezoelectric transducers emit 40 kHz signals — far above human hearing. Individually inaudible. Together they form the carrier wave that makes directional sound possible.
Where ultrasonic beams converge in air, nonlinear acoustic interactions demodulate the carriers back into audible frequencies. The air itself becomes the speaker — but only in the target zone.
Outside the beam cone, phase-misaligned waves cancel through destructive interference. 70 dB inside the beam, under 30 dB outside. A wall of quiet.
She's up at 5:30 for the gym. He sleeps until 7. Beamwave wakes her while he stays under. No more whispered apologies at breakfast.
Dorm rooms. Studio apartments. No walls? Doesn't matter. Beamwave is the wall.
Nurses, firefighters, pilots — anyone whose alarm fires at 3 AM while the rest of the house is dead asleep. They'll never know it went off.
$249 early-bird. No payment now — we'll email you when your unit is ready to order. First batch ships late 2026.
$249 · 68¢/morning · Shipping late 2026