Audio amplification apparatus
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United States of America Patent
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Jan 8, 2013
Grant Date -
Nov 4, 2010
app pub date -
Jul 12, 2010
filing date -
Apr 1, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of adjusting frequency-dependent amplification in an audio amplification apparatus. The audio amplification apparatus includes a forward transfer path (2) connectable to an output transducer, the forward transfer path including a frequency transposing element. The method includes the steps of: presenting stimuli to the output transducer at a plurality of frequencies; adjusting the stimulus level (C) at each frequency to meet a predefined loudness perception level or detection threshold of the listener; deriving an equal loudness contour of output transducer levels from the adjusted stimuli levels; and deriving the frequency-dependent amplification of levels of input signals (I) at each frequency.
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