An audiometer is a machine used for testing hearing. The invention of this machine is generally credited to Dr. Harvey Fletcher of Brigham Young University. Audiometers are standard equipment at ENT clinics and in audiology centers. They usually consist of an embedded hardware unit connected to a pair of headphones and a feedback button, sometimes controlled by a standard PC. Audiometer requirements are specified in IEC 60645, ISO 8253, and ANSI S3.6 standards. Harvey Fletcher (September 11, 1884 - July 23, 1981) was an American physicist. ... // BYUs origin can be traced back to 1862. ... The International Electrotechnical Commission (IEC) is an international standards organization dealing with electrical, electronic and related technologies. ... Logo of the International Organization for Standardization The International Organization for Standardization (ISO or Iso) is an international standard-setting body made up of representatives from national standards bodies. ... The American National Standards Institute or ANSI (pronounced an-see) is a nonprofit organization that oversees the development of standards for products, services, processes and systems in the United States. ...
An alternative to relatively high cost hardware audiometers are software audiometers. These use a standard computer and can be run by anybody in their home to test their hearing, although their accuracy is not as high due to lack of a standard for calibration.
An audiometer system as claimed in claim 6 further comprising gating means under control of the program control unit and interposed in circuit between said actuating elements and the control inputs of the digital memory means.
An audiometer system as claimed in claim 6 further comprising means for producing a signal corresponding to the extraneous noise level at a test station, and means for effectively inhibiting a test tone as a function of the relative levels of the noise signal and the test tone signal.
In the case of mobile devices, for which the audiometer in accordance with the invention is particularly suitable, this is particularly difficult or in many cases impossible for reasons of bulk and weight.
Audiometers should receive a calibration screen yearly, to insure that the machine is in proper working order.
The fee for this is $15.00 per audiometer in the metro area, and $20.00 per audiometer in greater MN (the difference in fee is due to the travel expenses incurred by the vendors).
If the audiometer is in need of repair, the vendor will notify the school of this.
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