• The MT103E-HD is a dual microphone, single output, stereo, 16KHz Noise Canceling / Echo Canceling solution
• The MT103E-HD utilizes your own microphone and own loudspeaker. It provides both analog and digital outputs.
• Both the microphone(s) and the far-end inputs 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 MT103 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 through wires. digital output through USB connection.
• Phoenix’s proprietary echo canceling, noise canceling, and AGC algorithms with no gating, to prevent the loss of critical information.

Microphone inputs connected to pins 1 and 2 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 1Kohm resistor
  *Units are preset to Mic level without 6dB boost; Phantom On

Note: user can use a single microphone connected to either pin 1 or pin 2 of J1
*Far-end inputs connected to pin 3 and pin 4 of J1. The input setting is Line level (2V peak-to-peak)

Notes:
1) Far-End input will be received through the USB channel if it’s active
2) Only one far-end signal is required; the two inputs will support stereo loudspeaker systems

System Output connected to the pin11 of J1. 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 channel if it’s active

Speakers – (Far-end out signal) is connected to pin 13 and pin 14 of J1. The output setting is Line level: 2V peak-to-peak

• 32KHz sampling frequency; 100Hz-16KHz 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)
• Microphone inputs connected to pins 1 and 2 of J1. The following microphone settings are available using the setup software:
  o Mic level (280mV peak-to-peak)
  o Line level (2V peak-to-peak)
  o add 6dB boost
  o Optional 2.8V power supply (phantom) , via 1Kohm resistor
  *Units are preset to Mic level without 6dB boost; Phantom On
  Note: user can use a single microphone connected to either pin 1 or pin 2 of J1
  o Far-end inputs connected to pin 3 and pin 4 of J1. The input setting is Line level (2V peak-to-peak)

Notes:
1) Far-End input will be received through the USB channel if it’s active.
2) Only one far-end signal is required; the two inputs will support stereo loudspeaker systems.

• System Output connected to the pin11 of J1. The following output settings are available using the setup software:
  o Line level: 2V peak-to-peak
  o Mic level: 200mV peak-to-peak
  *Units are preset to Line level
  Note: Output will be transmitted through the USB channel if it’s active.
• Speakers – (Far-end out signal) is connected to pin 13 and pin 14 of J1. The output setting is Line level: 2V peak-to-peak.

MT103EHD User Manual