Live Sound Dashboard & SOS
A companion mobile interface showing real-time street decibel curves, device battery health, and emergency SOS broadcast with GPS coordinates mapped directly to verified emergency contacts.
Directional Haptic Alert Device
A directional alert
device for deaf individuals.
Cochlea Cap detects sound and identifies its direction through haptic feedback — giving 360° situational awareness without expensive surgery.
The Problem
70 million people live without
70 million people live without
access to sound.
0
million
people worldwide are deaf or severely hard of hearing
0
crore 23 lakh BDT
minimum cost of a cochlear implant, plus highly invasive neurosurgery most cannot access
0
percent
of deaf individuals belong to low and middle-income families who cannot afford these procedures
Cochlear implants are not just expensive — they require invasive neurosurgery and rigid eligibility criteria that exclude millions. For the majority of the world's deaf population, the barrier isn't medical. It is financial.
Cochlea Cap approaches the challenge differently. Rather than attempting invasive sound restoration, it extends what deaf individuals already excel at — forward-focused visual awareness and lip-reading — into full 360° situational coverage through intuitive haptic pulses on the wrist.
How It Works
From sound to safety.
From sound to safety.
In under a second.
Step 01 / 04
Sound Detected
Microphones built into the Cochlea Cap continuously monitor ambient soundscapes. When audio exceeds the 95 dB alert threshold — the level of an approaching vehicle horn or siren — the system activates instantly.
Step 02 / 04
Direction Calculated
An onboard high-speed microcontroller analyzes the time-of-arrival difference between microphone capsules to calculate precisely which quadrant — front, back, left, or right — the sound originated from.
Step 03 / 04
Haptic Alert Fires
The corresponding vibration actuator on the wristband pulses with a distinct, unmistakable waveform. Four dedicated motors ensure the user immediately knows the exact hazard direction without turning their head.
Step 04 / 04
User Moves Safely
Deaf individuals are already expert forward observers and lip-readers. Cochlea Cap expands that situational confidence behind them and to both sides — complete 360° coverage for autonomous urban navigation.
Feasibility & Research
Tested in Dhaka —
Tested in Dhaka —
one of the noisiest
cities on earth.
Background Noise
Street-level field measurements recorded ambient noise ranging from 50 dB to 85 dB — a continuous baseline of dense urban commotion.
Speed & Horn Intensity Correlation
Vehicles traveling at elevated speeds consistently emit significantly higher decibel horns. Heavy transport trucks consistently outpaced local buses in both approach velocity and horn magnitude.
Adaptive Threshold — 95 dB
By calibrating the trigger threshold to 95 dB, the device activates exclusively for approaching high-risk vehicular hazards — filtering out routine sub-85 dB crowd babble with zero false positives.
Dhaka Street — Sound Decibel Profile
24-hour comparative acoustic monitoring across two key arterial points
Location A (Mirpur)
Location B (Farmgate)
95 dB Alert Threshold
Engineering Progress
Five hardware iterations.
Five hardware iterations.
Two latest models.
0
Working Models
The latest Cochlea Cap 4.0 and 5.0 models, each refining spatial resolution and haptic responsiveness
0
Awards Won
10 prestigious prizes across 13 engineering competitions, including international recognition
0
Research Paper
Peer-reviewed acoustic study documenting our urban street field experiments in Dhaka
Cochlea Cap 4.0
Cochlea Cap 5.0
Future Plans
The Road Ahead
Three upcoming milestones, each expanding the sensory intelligence and protective reach of our platform.
INMP441 Digital Audio + On-Device ML
High-fidelity INMP441 MEMS microphone arrays coupled with TinyML on-device classification models to categorize hazards — intelligently discerning emergency ambulances from regular horns.
LiDAR-Based 3D Environmental Spatial Map
Compact solid-state LiDAR sensors scanning pedestrian paths in real-time, streaming a 3D spatial obstacle map to the mobile portal — bringing autonomous vehicle perception to everyday safety.
Our Mission
The technology exists.
The technology exists.
The need is urgent.
Cochlea Cap is engineered in Dhaka, tested on some of the world's most demanding streets, and designed specifically for the communities who need it most. No surgical risks. No unaffordable price tags. Just uncompromised safety and independent mobility.