SKM2600
The SKM2600
Directional Microphone Module
Soundskrit’s SKM2600 directional microphone module incorporates all acoustic design requirements necessary to properly integrate a directional microphone into end products with both sound ports ported to the same surface. The module is built to be plug-and-play so that customers can get directional microphones designed into their products with efficiently with minimal effort. All modules are pre-tested to ensure proper acoustic sealing.
The SKM2600 microphone module is available with both dipole and hypercardioid variants.
Specifications
Directionality Pattern | Dipole |
|---|---|
Directivity Index | 4.8 dB |
SNR | 65.5 dBA |
Sound ports | Two ports on same surface |
Current Consumption | 115 µA |
Port Spacing | 12 mm |
Product Benefits
Integrated directional and omnidirectional microphone to enable advanced software processing | |
|---|---|
Flexible beam patterns | |
Integrated acoustic channels, pretested for sealing
| |
Integrated mesh for IP57 protection | |
Applications
Conferencing Devices | Security Cameras |
|---|---|
Headsets | Smart Home Devices |
Webcams | Voice Badges |
Intercoms & Doorbells |
Our Unique Module Design
Optimized Acoustic Channels
All of the acoustic channels required for placing a directional microphone into an end product are pre-built inside the gasket.
Plug-and-Play
The SKM2600 easily drops into any product to get a directional microphones up and running in your end product with minimal effort.
Hardware Directionality
The hardware inherently provides noise rejection without any added overhead introduced from typical microphone array processing.
Ingress Protection
The SKM2600 comes with an integrated acoustic mesh to provide water and particle ingress protection.
The SKM2600 microphone modules are analog microphones. This module series comes with 2 different variants. The SKM2600-DP outputs a dipole polar pattern while the SKM2600-HC outputs a hypercardioid polar pattern.
The SKM2600-DP uses the same mesh on each sound port of the microphone. This keeps the acoustic resistance at each sound port balanced and provides a symmetric dipole beam pattern.
The SKM2600-HC uses a mesh with a higher acoustic resistance on its back port compared to its front port. The added acoustic resistance on the back port provides more sound attenuation behind the microphone creating the hypercardioid-like beam pattern.
No. The SKM2600 modules just outputs the raw microphone signal. There are no algorithms built inside the module itself. Any additional software needed would typically run embedded inside the end product’s DSP or SoC. To learn more, check out our software page.
Each application has different needs. A dipole brings the most rejection on the sides, while cardioids favor noise rejection in the back. Check out these demo videos to learn more!
The SKM2600 has two mounting holes with a radius of 1.05 mm, so M1.8 screws, bolts or similar sized pins could be used to hold the module in place. The holes are 21 mm spaced apart and the mounting tabs have a height of 0.2 mm. The modules have a height of 4.85 mm, including 0.5 mm compressible sealing foam.
The module’s top sealing foam should be compressed by 30-70% to form an optimal acoustical seal with the housing.
Recommended connector: Amphenol HFW4R-1STE1H1LF
Please find the pinout of the module’s flex connector below.
Application Notes
Optimizing Cardioid Patterns
This article shows the effects of microphone positioning when combining dipoles and omnidirectional microphones.
Introduction to the XY configuration using MEMS directional microphones
The article explains how orthogonal dipole microphones can be used to steer a beam in any direction, for stereo recording and for direction of arrival detection.
Exploring Broadside Arrays of Directional Microphones
This article shows the effect of spacing and microphone type on broadside array beamforming.
Get in Touch With Us
Soundskrit challenges the old way of doing things with our proprietary hardware and software.