Lombard attempt
The Lombard experiment or Lombard reading experiment is an audiometric method of ear, nose and throat medicine , with which the simulation of bilateral deafness or hearing loss can be revealed. The test is based on the control loop, which continuously controls your own speech via your hearing and adjusts it if necessary.
The Lombard effect and the Lombard experiment based on it were described by Étienne Lombard in 1911.
Investigation process
The examinee is asked to read a text out loud. A loud noise (70–80 dB ) is suddenly heard in both ears via headphones that have already been put on. Those with normal hearing or those with only slight hearing loss then raise their voices significantly, read aloud louder or even stall because they can no longer control the volume of their own voice through their hearing.
A person who is actually deaf is not disturbed by the offered noise, a person who is hard of hearing only when the volume of the noise is correspondingly high. However, only the positive result, i.e. the increase in the speech volume, may be assessed, as some people manage to continue reading at the same volume despite the disturbance in the control loop.