DFRobot
6+1 Microphone Array
A 6+1 MEMS microphone array built around seven MSM261S4030H0 high-sensitivity digital silicon microphones. Designed for advanced audio applications including...
A 6+1 MEMS microphone array built around seven MSM261S4030H0 high-sensitivity digital silicon microphones. Designed for advanced audio applications including noise suppression, echo cancellation, reverb reduction, and sound source localisation.
The array outputs raw digital audio over I2S, eliminating the need for an external codec. This fully digital signal path reduces design complexity while improving noise immunity. An onboard ring of 12 SK9822 RGB LEDs provides visual feedback with 256-level colour and 32-level brightness control.
Key Features
- 7-Microphone Array – Six omnidirectional MEMS microphones plus one centre microphone for beamforming
- Digital I2S Output – 24-bit audio direct to DSP or MCU, no external codec required
- High Sensitivity – −26 dBFS @ 1kHz, 1Pa with 57dB signal-to-noise ratio (A-weighted)
- 140 dB SPL – Handles high sound pressure levels without distortion
- 12 RGB LEDs – SK9822 ring array with 256-level colour and 32-level brightness
- Two-Wire LED Control – Synchronous dual-lane interface for positive or negative output RGB
Specifications
- Microphone Chip – MSM261S4030H0 (omnidirectional, bottom-ported, I2S digital output)
- Audio Output – I2S digital
- Sound Pressure Level – 140 dB SPL
- Sensitivity – −26 dBFS @ 1kHz, 1Pa
- Signal-to-Noise Ratio – 57dB (20kHz bandwidth, A-weighted)
- LED Current – 20mA per colour, 60mA total at full brightness
- LED Viewing Angle – 120°
- Input Voltage – 3.3V ±0.2V DC
- Input Current – >750mA (full brightness)
- Dimensions – 78.1 × 88.8mm
- Connectors – 2×5P 2.54mm header and 10P 0.5mm FPC
- Operating Temperature – −30°C to 85°C
Ideal For
- Voice assistant and smart speaker projects
- Sound source localisation and beamforming
- Noise and echo suppression applications
- Far-field voice recognition systems
Package Contents
- 1× 6+1 Microphone Array
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- FPC
- FPC stands for flexible printed circuit, a flat flexible cable or connector style often used where space is tight. It matters because this breakout needs the correct pin count and pitch FPC cable to connect reliably to the display or high-speed interface.
- I2S
- I2S is a digital audio interface used to send sound data between chips, such as from a microcontroller to an audio amplifier or DAC. It matters if your project needs cleaner digital audio output than a basic buzzer or PWM signal can provide.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- MEMS microphone
- A tiny microphone made using micro-electromechanical systems, the same style of miniature manufacturing used in many phone sensors. It lets the board detect sound without needing an external microphone, which is useful for noise-reactive projects and simple audio input.
- RGB
- Short for red, green and blue, usually referring to an LED that can mix those three colours. It matters because controlling an RGB LED teaches how separate outputs combine to create different colours.
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Supplier page — dfrobot.com
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Guides, code examples, and more
Related Tutorials
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