Feel the world around you.
466 million people worldwide live with disabling hearing loss.
Traditional hearing aids cost $2,000+ and don't work for everyone. Critical sounds — fire alarms, car horns, someone calling your name — go unheard. EchoTouch bridges that gap with a wearable that translates spatial sound into intuitive haptic feedback, at a fraction of the cost.
360° detection, from sound to touch in under 50ms.
4 MEMS microphones in a 40mm array capture spatial audio. GCC-PHAT algorithm computes time-delay across 6 mic pairs, pinpointing direction at ±15° accuracy. 8 LRA haptic motors arranged 360° around the wrist tap from the exact direction of the sound.
Detect
4 MEMS mics capture 360° spatial audio at 16kHz.
Locate
GCC-PHAT pinpoints direction at ±15° accuracy.
Classify
On-device TF Lite identifies the sound type.
Alert
Haptic motors tap from the sound's direction.
Intelligent sound recognition, right on your wrist.
A convolutional neural network trained on 26,000+ audio samples runs inference in under 20ms directly on the ESP32-S3 — no cloud required. Users can also train custom sounds through the companion app.
Emergency
Fire alarms, sirens, glass breaking
Strong continuous vibrationAlert
Doorbell, knock, car horn
Triple pulseAmbient
Background noise, traffic
Single gentle pulseFull-stack, from firmware to cloud.
Hardware
- ESP32-S3-WROOM-1 (8MB PSRAM)
- 4× SPH0645 MEMS microphones
- 8× LRA motors + DRV2605L
Firmware
- PlatformIO / Arduino
- TensorFlow Lite Micro
- NimBLE (BLE 5.0)
Mobile App
- Flutter 3.x / Dart
- 360° radar visualization
- Custom sound training
Cloud
- Azure IoT Hub
- Cosmos DB (serverless)
- Azure ML workspace
Configure, monitor, and train — all from your phone.
360° Radar View
Real-time visualization of detected sounds and their directions around you.
Custom Sound Training
Record your doorbell once — Azure ML trains a personal model and deploys it OTA in minutes.
Event History
Browse a timeline of every sound event with classification, direction, and confidence scores.
Device Management
Battery monitoring, firmware updates, haptic intensity tuning, and BLE pairing.
Accessibility shouldn't be a luxury.
At ~$35 BOM cost versus $2,000+ for traditional hearing aids, EchoTouch is designed for global accessibility at scale. Our goal is to make spatial sound awareness available to everyone — regardless of income, geography, or the severity of hearing loss.