| 摘要 |
In the computer solution of the device for making audiometric measurements, a computer software controls the playback of test acoustic signals. The signals are saved on an optical, magnetic or magneto-optical disk or are uploaded from computer network. Following amplification the signals are received by the patient under examination. The characteristic feature of this solution is that the cirucits which feed acoustic signals to the patient's headphones or to the bone vibrator are plugged into the acoustic output of the disk drive or to another acoustic output of the computer or to the acoustic output of the computer which is connected via a computer network to a computer which reads the recording of the test signals. According to the invention, the computer audiometer can be operated manually or automatically. In the automatic mode, the computer software controls on its own the playback of test signals recorded on a disk. It does it by periodically changing the tracks being read. The tracks contain signals with successive measurement frequencies of various levels or speech-in-noise test signals. According to the invention, the audiometer can be calibrated using pre-registered deviations of the resultant gain characteristics of the wall audio channel. |
