Real-Time 3D Audio Noise Logger with ESP32 Kit
Build a Real-Time 3D Audio Noise Logger with ESP32
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Transform two mono microphone signals into a stereophonic 3D soundscape that reveals the exact direction of noise sources. By implementing Head-Related Transfer Function (HRTF) convolution on a low-cost ESP32, you'll build a portable environmental noise logger with spatial audio output, ideal for acoustic monitoring and urban sound mapping.
What You'll Build
A portable device that captures ambient sound through two I2S microphones, processes them in real time using HRTF filters on the ESP32, and reproduces a binaural audio stream through headphones or speakers. The result is a spatial audio field where you can pinpoint the direction of each noise source - a powerful tool for evaluating environmental noise pollution.
What You'll Learn
- Implement real-time convolution of HRTF impulse responses on an ESP32 microcontroller
- Interface INMP441 I2S MEMS microphones and stream high-quality audio data
- Generate precise analog output via MCP4728 quad DAC and amplify it using a PAM8403 stereo amplifier
- Design and prototype compact audio processing circuits on PCB and integrate them into a field-ready enclosure
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| INMP441 I2S Mic | 2 |
| MCP4728 DAC | 1 |
| PAM8403 Stereo Amp | 1 |
| 3W 8? Speaker | 2 |
| 4.7k? Resistors | 5 |
| 100nF Caps | 15 |
| PCB Prototype Board | 3 |
| 3.5mm TRS Jack | 2 |
| 5V 2A PSU | 1 |
| Enclosure Box | 1 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit is built for postgraduate acoustics researchers, B.Tech/M.Tech final-year project students tackling environmental monitoring, and professionals designing smart city noise mapping solutions. If you're participating in a Smart India Hackathon challenge on urban sound pollution or developing a Ph.D. thesis on spatial audio at IIT/NIT, the offline-first HRTF processing pipeline you'll develop here is directly applicable.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project - accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Our AI build companion, accessible via QR code, provides step-by-step debugging for this exact project. If you need further help, our WhatsApp support team responds within a few hours.
Can I use this kit for real-world noise pollution surveys?
Yes. The HRTF-processed output can be recorded and analyzed for direction-of-arrival information. Calibration files and guidelines are included to align measurements with ISO 1996 standards.
Do I need prior DSP experience?
Familiarity with C/C++ and basic signal processing concepts (FFT, filtering) is recommended. The kit includes pre-computed HRTF coefficient sets and modular firmware examples to accelerate your learning.
Can the setup be powered by battery for field deployment?
The 5V 2A PSU is included for development, but you can integrate a Li-ion battery pack (not included) with a boost converter for portable use. The enclosure has space for a power bank.
Environmental - Head-Related Transfer Function convolution on ESP32 renders 3D audio positioning from two mono sources.
What's in this kit
- ESP32 Dev Board
- INMP441 I2S Mic x2
- MCP4728 DAC
- PAM8403 Stereo Amp
- 3W 8? Speaker x2
- 4.7k? Resistors x5
- 100nF Caps x15
- PCB Prototype Board x3
- 3.5mm TRS Jack x2
- 5V 2A PSU
- Enclosure Box
- Soldering Iron
- Solder Wire
Choose your assembly option:
- Soldering Kit - 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo - 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
Other projects you can build
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items