nThree kinds of tests are
employed:
1.Sound
System è Binaural microphone
2.Mouth
simulator è Hands-free microphone
3.Mouth
simulator è Binaural microphone
nIn cases 2 and 3, a
mouth simulator compliant with ITU-T Recommendation P51
is required
n
nThe
test signal must be pre-processed, for shaping its spectrum in compliance with the standardized emission of the human talker (male or female)
