Bruel & Kjaer 4227

105 Visitors viewed Rosenkranz Elektronik ads in the last 30 Days

Mouth Simulator Type 4227 is an accurate reference sound source
developed for near field testing of telephone transmitters and microphones.
It provides a standardised and realistic simulation of the human voice field.

Features
Conforms to IEEE-269, IEEE-661 and ITU-T P.51.
Accurate level and frequency response calibration is easily done using a
Brüel & Kjær ½" microphone placed in the supplied calibration jig
Accurate simulation of human voice field
Quality control testing of frequency response and distortion
of telephone transmitters and close-talking microphones
Continuous SPL of 100dB 25mm from lip ring
Low distortion
Built-in overload protection circuit