• Four microphone, beamforming, single output, stereo, 8KHz Noise Canceling / Echo Canceling solution
• Utilize two-split Phoenix Audio microphones and your own loudspeaker.
• The 4 microphones are connected through a 0.1” pitch header. User can design the board to mount on its motherboard with mating connector, or connect to the MT103KSK through wires
• Controllable input level and phantom power supply via free downloadable utility
• Analog output through a 0.1” pitch header. User can design the board to mount on its motherboard with mating connector, or connect to the MT103-KSK through wires.
• Digital output through USB connection
• Phoenix’s proprietary echo canceling, beamforming, noise canceling, and AGC algorithms with no gating, to prevent the loss of critical information

• The 4 microphone inputs are connected to pins 1, 2, 3, & 4 of J1. The following microphone settings are available using the setup software:
  - Mic level (280mV peak-to-peak)
  - Line level (2V peak-to-peak)
  - Add 6dB boost
  - Optional 2.8V power supply (phantom) , via 1 KOhm resistor
  *Units are preset to Mic level without 6dB boost; Phantom On
  Note: User has the option to use a single microphone connected to either pin 1, 2, 3, or 4 of J1. However, it is recommended that the provided microphones are used and that all four are connected to maximize beamforming and audio clarity.
  - Far-End Inputs connected to USB or J1 pin 6. The input setting is Line level (2V peak-to-peak)

  Notes:
  1) Far-End Input will be received through the USB channel only.
  2) Only one far-end signal is required; the two inputs will support stereo loudspeaker systems

• System Output connected to the pin13 of J1 and USB. The following output settings are available using the setup software:
  - Line level: 2V peak-to-peak
  - Mic level: 200mV peak-to-peak
  *Units are preset to Line level
  Note: Output will be transmitted through the USB and pin 13 of J1 and USB.
• Speakers – (Far-end out signal) is connected to pin 11 and pin 12 of J1. The output setting is Line level: 2V peak-to-peak

• 16KHz sampling frequency; 100Hz-8KHz bandwidth
• Two levels of Echo Canceling aggressiveness and three levels of Echo Canceling speed
• Controllable tail length – up to 220 ms.
• Three levels of noise reduction: 8dB (Low), 14dB (Medium), and 20 dB (High), selectable through the free control software
• Residual noise suppressed to the environment noise level to prevent pumping noise
• Eight preset color filters for both the output and the speaker signal
• Low latency (10msec)

MT103KSK Uer Manual