CM 311

• Acoustic coupling cavity

• The CM 311 artificial ear is an ear simulator that simulates the way an earplug catheter is inserted into the ear canal or auricle, and simulates the coupling of the earphone with the human ear to measure the acoustic performance of the earphone.

  CM 311 pressure field artificial ear with built-in pre-polarized pressure field microphone, it is a coupling cavity for acoustic measurement of pre-polarized pressure field.

  With MegaSig PM 0083 and other IEPE signal conditioning to achieve the best test results;