Unidirectional Microphones

ECMIC provides unidirectional electret microphone capsules designed for focused sound pickup in professional audio applications. Featuring cardioid directional characteristics, high sensitivity, and frequency-boosted response, these microphone capsules are suitable for broadcasting, music systems, communication devices, and OEM audio solutions.

Unidirectional Electret Microphone Capsules

Directionality:
Omni-DirectionalUni-DirectionalBi-Directional
Diameter (Ø):
3mm4mm5.8mm6mm9.7mm10mm14mm16mm25mm
Termination:
Surface MountPin TypeSolder Pads3 Solder PadsWire LeadsWire ConnectorWithout FET
49-55 of 55 Products
High-Fidelity 9.7mm Wide Cardioid Electret Condenser Microphone – Headset, Conference & Streaming

High-Fidelity 9.7mm Wide Cardioid Electret Condenser Microphone – Headset, Conference & Streaming

  • Model: ECM-B9750UL45-T3-110
  • Dimensions: 9.7 × 5 mm
  • Sensitivity: -45 dB ± 2
High-Performance Uni Electret Mic Capsule for Hi-Fi Audio Systems

High-Performance Uni Electret Mic Capsule for Hi-Fi Audio Systems

  • Model: ECM-B1045UML50-25082
  • Dimensions: 10 × 4.5 mm
  • Sensitivity: -50 dB ± 2
Live Broadcast Microphone Capsule 25mm

Live Broadcast Microphone Capsule 25mm

  • Model: ECM-B2573UL33-23221
  • Dimensions: 25 × 7.3 mm
  • Sensitivity: -33 dB ± 2
Unidirectional Electret Condenser Microphone Cartridge for Live Streaming Shotgun

Unidirectional Electret Condenser Microphone Cartridge for Live Streaming Shotgun

  • Model: ECM-B1463UL45-290
  • Dimensions: 14 × 6.3 mm
  • Sensitivity: -45 dB ± 2
Vocal Recording Microphone Capsule 14mm

Vocal Recording Microphone Capsule 14mm

  • Model: ECM-B1445UL44-476
  • Dimensions: 14 × 4.5 mm
  • Sensitivity: -44 dB ± 2
Wide Heart-Shaped Mic for Instruments & Group Vocals

Wide Heart-Shaped Mic for Instruments & Group Vocals

  • Model: ECM-B1465UL40-26306
  • Dimensions: 14 × 6.5 mm
  • Sensitivity: -40 dB ± 2
Wireless Headset Microphone Capsule 10mm

Wireless Headset Microphone Capsule 10mm

  • Model: ECM-B1045UL42-187
  • Dimensions: 10 × 4.5 mm
  • Sensitivity: -42 dB ± 2
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FAQs

Unidirectional microphones, also called cardioid microphones, focus pickup in the front direction, effectively reducing background noise. They are ideal for walkie-talkies, intercom systems, in-car voice input, conference microphones, and other scenarios that require clear voice capture.

Unidirectional microphones use front and rear sound holes to create a pressure gradient, picking up sound mainly from one direction. Omnidirectional microphones pick up sound evenly from all directions. Unidirectional mics work better in noisy environments, while omnidirectional mics are better for capturing ambient sounds.

ECM-B9750UP-45, a 9.7mm cardioid microphone designed for car stereo systems, effectively isolates noise, ideal for Bluetooth hands-free and voice control.

25mm cardioid microphones with high SNR, perfect for professional recording and live streaming:

Unidirectional microphones rely on front and rear sound holes to create the pressure gradient needed for directionality. Sealing these holes completely (to achieve IP67 waterproofing) would impair their function.
For more details, see: Waterproof Principles for Omnidirectional and Unidirectional Microphones

Develop Your Unidirectional Microphone Applications

ECMIC supports OEM projects with directional electret microphone capsules, custom specifications, and technical assistance.

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