Hearing Aids and Further Hearing Loss? Part V

Predicted PTS (Permanent Threshold Shift) From Hearing Aid Use Various researchers have utilized data from TTS (Temporary Threshold Shift) and ITTS (Integrated Temporary Threshold Shift) in formulae that have included the length of time worn during the day, number of years worn, age at which the aid was first worn, the gain level used, and…

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ISTS – Measuring Advanced Digital Hearing Aids

ISTS – A New Measurement Standard Proposal Hearing aids are currently measured using stationary signals, which include sine wave  frequency sweeps and unmodulated noise signals.  These test signals allow for reproducible measurement conditions and are described in ANSI 3.22 {{1}}[[1]] American National Standards Institute (ANSI ). ANSI S3.22-2003. Specification of hearing aid characteristics. New York:…

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