Hearing Instruments Microphones

Knowles' continues to drive the design and development of new microphone solutions for hearing aids. Developments include unidirectional, omni-directional, matched pairs, and combined uni-omni microphone designs. Behind-the-ear, in-the-ear,in-the-canal, completely in-the-canal, and new cochlear completely in-the-ear solutions are refined through variables such as shell size, RFI suppression, sound damping, port configuration, frequency response, shock resistance and more.

Features

  • Complete range of configuration options
  • Wide range of size and performance options
  • Custom crafted designs
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Select a product category to view features, benefits, documents and performance details

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EA Series

5.56mm x 3.98mm x 2.21mm (.219in x .157in x .087in) Rugged construction to withstand severe environmental conditions High resistance to mechanical shock Available with RFI suppression Undamped, screen damped, and internally damped responses Numerous port locations Custom tube diameters and lengths available Wide range of frequency responses
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EK series

5.56mm x 3.98mm x 2.21mm (.219in x .157in x .087in) Rugged construction to withstand severe environmental conditions High resistance to mechanical shock Available with RFI suppression Undamped, screen damped, and internally damped responses Numerous port locations Custom tube diameters and lengths available Wide range of frequency responses
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EM/BEM Series

3.61mm x 3.61mm x 2.21mm (.142in x .142in x .087in) Rugged construction to withstand severe environmental conditions High resistance to mechanical shock Improved RFI and EMI Undamped, screen damped, and internally damped responses Numerous port locations and a wide range of frequency responses available Extended housing EM microphones are also available, improving sensitivity/noise in the same footprint Custom corner frequencies achieved through electrical high pass filter optimize noise performance at low frequencies for demanding matching and directional applications BEM offers improved Power Feedthrough Attenuation, improved settling time, and electrical high pass filter
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FG/BFG Series

2.59mm dia. x 2.59 mm (0.102in dia. x 0.102in) Small size is ideal for multiple applications Rugged High resistance to mechanical shock Exceptionally low vibration sensitivity Various responses available Integral RFI suppression BFG offers improved Power Feedthrough Attenuation, improved settling time, and electrical high pass filter Custom corner frequencies achieved through electrical high pass filter optimize noise performance at low frequencies for demanding matching and directional applications
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MM20 Series

3.35mm x 2.50mm x 0.96-1.30mm (.131in x .098in x .038-.051in) Miniature, high-performance, low power, bottom port silicon microphone with best SNR and extended dynamic range.
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MM25 Series

3.35mm x 2.50mm x 1.30mm (.131in x .098in x .051in) Trimmable, miniature, high-performance, low power, bottom port silicon microphone with ultra-low noise.
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MQM Series

3.35mm x 2.50mm x 0.96mm (.131in x .098in x .038in) Reflow soldering compatible Low vibration sensitivity Bottom port PCB mount or traditional tubed options Smallest MEMs hearing instrument microphone available
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TM/BTM Series

3.61mm x 3.61mm x 1.30mm (.142in x .142in x .051in) Rugged construction to withstand severe environmental conditions High resistance to mechanical shock Improved RFI and EMI suppression Undamped, screen damped, and internally damped responses Numerous port locations and a wide range of frequency responses available Extended housing TM microphones also available improving sensitivity/noise in the same footprint Custom corner frequencies achieved through an electrical high pass filter optimize noise performance at low frequencies for demanding matching and directional applications BTM offers improved Power Feedthrough Attenuation, improved settling time, and an electrical high pass filter
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TO/BTO Series

3.61mm x 3.61mm x 1.30mm (.142in x .142in x .051in) Improved RFI and EMI suppression Undamped, screen damped, and internally damped responses Numerous port locations Custom tube diameters and lengths available Custom corner frequencies achieved through an electrical high pass filter optimizes noise performance at low frequencies for demanding matching and directional applications BTO offers improved Power Feedthrough Attenuation, improved settling time, and an electrical high pass filter