Ear & Mouth Simulators
Type 4157 – Artificial Ear / Ear Simulator with Microphone and Preamplifier
The Ear Simulator Type 4157 closely reproduces the acoustical parameters of the human ear, presenting the insert earphone under test with an impedance approximating that of the real human ear.
- Frequency response, sensitivity and distortion measurements on insert earphones, e.g. used in hearing aids, operator headsets, etc.
- Servicing of hearing aids
- Production testing of earphones