- Hearing Test
Impedance or Tympanometry Test
Welcome to Otofon India, where we are committed to improving your hearing health and quality of life. We offer a wide range of audiological services and cutting-edge solutions for hearing impairments. In this article, we will explore one of the essential diagnostic tests we offer: the Impedance Test.

What is the Impedance Test?
The Impedance Test, also known as Tympanometry or Acoustic Immittance Testing, is a crucial diagnostic tool used to assess the functionality of the middle ear and the integrity of the eardrum (tympanic membrane). This non-invasive and painless test provides valuable information about your ear’s health and can aid in diagnosing various hearing-related conditions.
How Does the Impedance Test Work?
During the Impedance Test, a specialized probe is gently placed in the ear canal. The probe emits a series of sounds and pressure variations, while a microphone records the response from the ear. The test measures how well the middle ear system (including the eardrum and middle ear bones) responds to these acoustic signals.

- Importance
What Can the Impedance Test Reveal?
- Middle Ear Function
The Impedance Test helps determine if there are any issues with the movement of the eardrum or the middle ear bones (ossicles). It can detect problems such as fluid in the middle ear, perforated eardrum, or a blockage in the ear canal.
- Eustachian Tube Dysfunction
The test can identify conditions like Eustachian tube dysfunction, which may lead to ear infections and pressure imbalances.
- Hearing Aid Fitting
Impedance testing is valuable for hearing aid users. It ensures that hearing aids are appropriately fitted, preventing discomfort and optimizing their performance.