Introducing Directional Mems Microphones by Harman

Introducing Directional Mems Microphones by Harman

Micro-Electro-Mechanical System (MEMS) microphones currently available in the marketplace are omni-directional only. Directionality is typically achieved by utilizing two omni-directional MEMS with a DSP.

HARMAN Directional MEMS utilize an acoustical design to achieve directionality. They provide a better wide-band voice performance, more industrial design flexibility, a less complex system design and a total system cost reduction.

Directional MEMS are offered in two types, depending on the application:

  • Noise-cancelling Near field (2.5 to 5 cm from the talker) for headset applications with boom microphones 
  • Cardiod Far field (>50 cm from the talker) for TV’s, Sound bars, laptops, VOIP devices, wall mounted cameras, voice-activated digital assistants 

Directional MEMS vs. Omni-directional MEMS Comparison

  • Directional sound is 40% closer to desired source 
  •  Better frequency response when placed near large objects 
  •  3db SNR advantage over a directional patter derived from 2 omni MEMS using DSP technology 
  •  Reduces MIPS requirements

Typical directional pattern derived from Dual Omni Microphones by competitor’s system using matched elements

HARMAN Directional-MEMS

Directional MEMS vs. Directional ECMS Comparison

  • Directional MEMS simple design with minimal ID impact and reduces assembly time 
  • Implementation cost is lower – no need for boots, screens, acoustic cloths and vibration isolators 
  • Overall manufacturing yield is higher, resulting in lowest total cost for customer 
  •  Improved manufacturing consistency yields better performance

Contact us to find out more about the benefits of Directional MEMS.