Condenser microphone technology

Knowles’ advanced microphone capabilities include high-performance hearing instrument microphones and electret condenser microphones for consumer electronics.

With the introduction of the first patented head-worn hearing aid, we revolutionized hearing health. And today, 70 percent of hearing aids contain Knowles components. 

Our hearing instrument microphones offer the world’s best signal-to-noise ratio in ultra-small packages designed to operate at 0.9 volts and below. Utilizing primarily back-electret motor structures and custom low-voltage/low-noise integrated circuitry, we have the broadest and most advanced hearing instrument microphone portfolio in the world.

Knowles offers two categories of advanced condenser microphones: ultra high performance designs for hearing instrumentation, and electret condenser microphones for consumer electronics.

  • Large, flexible product portfolio
  • Proven high volume quality
  • 60+ years application experience
  • Automated and semi-automated assembly and testing
  • Multi-facility production capacity
  • Unique film plating

ECM

Knowles offers two categories of advanced condenser microphones: ultra high performance designs for hearing instrumentation, and electret condenser microphones for consumer electronics.

  • In-house IC design and development
  • JFETs and ultra low noise FETs
  • Analog to digital CMOS designs
  • Improved RF and size reduction
  • Hi/low pass frequency filtering
  • AGC for dynamic frequency adjustment

ECM

Knowles offers two categories of advanced condenser microphones: ultra high performance designs for hearing instrumentation, and electret condenser microphones for consumer electronics.

  • Microphone, boom and hearing instrument subassemblies
  • Design, development and assembly
  • Gasket and acoustic interface design
  • Sensitivity and phase-matched directional
  • Omni and uni-directional configurations
  • Terminations and electrical interfacing

ECM

Knowles offers two categories of advanced condenser microphones: ultra high performance designs for hearing instrumentation, and electret condenser microphones for consumer electronics.

  • Innovation of acoustic platforms
    • Bone conductors and ultrasonic sensors
    • Piezo microphones and accelerometers
  • RFI design and development
  • PSPICE and CAD FEA
  • Material evaluation
  • Anechoic chamber testing and sound box
  • Pilot projects and prototyping

ECM