Method and apparatus for measuring attack and release times of hearing aids
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United States of America Patent
Stats
-
Mar 4, 1980
Grant Date -
N/A
app pub date -
Aug 25, 1978
filing date -
Aug 25, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
At the option of an operator, the attack or release time of a hearing aid is automatically measured, and the measurement displayed in milliseconds on a digital readout. A test tone signal of constant frequency is successively cycled between relatively low and high power levels. During the first cycle of the test signal a sample is taken and stored which is representative of the steady state response of the hearing aid under test; and during the second cycle a measurement is automatically made of the time required for the output of the hearing aid to settle to within a predetermined recovery range about the stored sample signal.
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Family
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