Description:
The INMP441 Omnidirectional MEMS Microphone Module is a high-precision digital microphone designed for audio capture, voice recognition, sound detection, and speech processing applications. Based on the INMP441 MEMS microphone chip, this module provides high-quality digital audio output through an I2S interface, making it ideal for ESP32, Arduino, Raspberry Pi, STM32, and other microcontroller projects.
Unlike analog microphone modules, the INMP441 outputs a clean digital audio signal directly through the I2S interface, reducing noise and eliminating the need for an external analog-to-digital converter. This results in better sound quality and simpler integration with modern microcontrollers such as the ESP32, which includes built-in I2S support.
The microphone is omnidirectional, meaning it can detect sound from all directions. It has high sensitivity, low noise, and a wide frequency response, making it suitable for voice commands, sound recording, smart speakers, audio monitoring, and AI voice assistant projects.
Its compact MEMS construction provides excellent stability, very small size, and low power consumption, making it suitable for portable and battery-powered devices.
Typical applications include:
- Voice recognition systems
- ESP32 smart speaker projects
- AI voice assistants
- Audio recording and data logging
- Sound level monitoring
- Speech detection and wake-word systems
- Smart home voice control
- Security and surveillance systems
- IoT audio monitoring devices
- DIY intercom and communication projects
The module uses a standard I2S interface with pins for WS, SCK, SD, and L/R selection, making it easy to connect directly to the ESP32 or other microcontrollers that support digital audio input. It typically operates from 1.8V to 3.3V and consumes very little current, making it ideal for wearable and wireless applications.
For your future electronics and automation projects, this microphone could be useful if you decide to add voice commands or sound monitoring to your smart systems, such as voice-controlled indoor farming, machine monitoring, or smart home devices.
Key Features:
- Based on the INMP441 MEMS microphone chip
- Omnidirectional sound pickup
- Digital I2S output interface
- High sensitivity and low noise
- Wide frequency response
- Low power consumption
- Ultra-small and lightweight module
- Compatible with ESP32, STM32, Raspberry Pi, Arduino, and other I2S-supported boards
- No external ADC required
- Supports left/right channel selection
- Operating voltage: 1.8V–3.3V
- Suitable for voice recognition, recording, AI, and IoT projects
- Typical module size: approximately 15 × 10 × 3 mm
Weight:
Approx. 1–3 g
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