KHORA / LAB
KHORA / Instrument 01

Acoustic observatory

Move the focus, inspect the sidelobes, and export the phase map.

MODEL / UNCALIBRATED
X: -160 to +160 mmZ: 20 to 260 mm
−40 dB0 dB / focal pressure
Focal pressure
—
RMS / quantized phase drive
Patch force
—
Integral over 10 × 10 mm
Reflecting plane / normal incidence
Lateral gradient
—
∂F/∂x in mN/mm
Fixed drive / 1 mm difference
Wavelength
—
40 kHz / air at 20 °C
Pitch 10 mm / grating lobes possible
EXPLORE
Focus [0, 0, 140] mmPreparing field
Disconnected / no hardware measurementsACK RTT — / no measurements
Drag the focus marker in the field, or use the sliders below. Element model: circular piston, radius 5 mm; illustrative source 1 Pa peak at 1 m. No measured acoustic calibration. Color saturates at focal reference; changing focus rescales it. Hann weights are simulation-only.
Tracking: no device samples. Serial connection stages phases with outputs disabled; it does not arm transducers.
Instrument 02 / Optical geometry & 3D assembly
Optical & mechanical model Illustrative geometry
AI HAND TRACK
Archivo BBS / reference examples

Engineering notebook

EXAMPLE THREADS / SESSION-LOCAL POSTS
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Thread Title

The Physical Proof: Real-World Evidence & Science

How do we know this works in real life?

KHORA unifies two real, commercially verified technologies:

1. ASKA3D Optical Plates (AsukaNet Co., Ltd.)

Deployed in real 7-Eleven Bank ATMs in Japan: Keypads float in empty space so users type banking PINs without touching physical glass.

Patent: US Patent 9,678,255 B2 ("Aerial Image Display Device"). Real-image convergence in free air: $d_{air} = d_{source}$.

2. 40 kHz Acoustic Touch (Ultraleap / University of Bristol)

Focusing an ultrasonic array can generate radiation force. KHORA currently reports uncalibrated model estimates; measured force depends on the assembled hardware and target geometry.

$10 DIY Levitation Test: Two Arduino HC-SR04 sensors focused at 40 kHz physically levitate a polystyrene bead in mid-air.

KHORA Engineering DevTools & Code Generators

Radiation Force: ~9.2 mN 

        


        

        
      

    

  


  

    

      

        
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