Soundskrit SKR0400 (Analogue) and SKR0410 (PDM) MEMS Directional Microphones + Eval Kit

Soundskrit’s highly directional MEMS microphones offer superior signal isolation and acoustic-background-noise rejection that is unlike any MEMS or array-based solution on the market at the time of release. These full-range microphones offer high-fidelity, lowest-noise sound for clear signal pickup for applications that include:

  • Mobile devices, laptops, and tablets
  • Smart home IoT devices, smart TVs/speakers, and smart home security
  • Webcams and conferencing
  • Wearables, including hearing aids
  • Gaming and augmented/virtual reality headsets 
  • Automotive, including motorcycle intercom systems

In most instances, minimal signal processing is required, even in noisy environments, thanks to the high directionality of the dipole pickup pattern.

Soundskrit offers MEMS microphone solutions for both analogue (SKR0400) and PDM (pulse density modulation) output (SKR0410). Both options come in a 2.65 x 3.50 x 1.10 mm package and feature the following audio specifications:

  • 20 Hz – 20 kHz frequency range
  • 4.8 dB full-spectrum diffuse noise rejection
  • >20 dB noise rejection at the null
  • 63.5 dBA SNR (Signal-to-Noise Ratio)

The SKR0400 features single-ended and differential analogue output with 1% THD (Total Harmonic Distortion) at 116 dB SPL (Sound Pressure Level) and a current draw of 115 µA, and the SKR0410 features PDM output with 1% THD at 111 dB SPL and a current draw of 685 µA.

Soundskrit’s Horizon Development Platform is one of a few ways to evaluate these microphones. It is an easy-to-use kit which can be clipped to the top bar of a laptop and plugged in via USB-C. The board features an array of microphones for testing Soundskrit’s five standard microphone configurations. This allows selection of beam patterns that include:

  • Dipole
  • Hyper-cardioid
  • Super-cardioid
  • Cardioid
  • Omnidirectional

These patterns can be selected using Soundskrit’s user-friendly GUI, and an omnidirectional microphone is included on the board to serve as a reference against Soundskrit’s directional solution.

Additional modes of operation, also selectable within Soundskrit’s software, include ‘privacy mode’ for single-user voice isolation in noisy and reverberant environments, ‘collaboration mode’ for multiple-user voice isolation 360° around the kit, and ‘true stereo recording’ for pro-audio-level recording in a remarkably compact form factor. The kit can also be used for voice calls for real-world testing.

If you’re looking to evaluate Soundskrit’s MEMS microphones for use in a commercial project, fill out the form below, and ipXchange will get you connected as datasheets are only available on request.

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