Hearing aid having improved speech intelligibility due to frequency-selective signal processing, and method for operating same
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United States of America Patent
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Jul 27, 2004
Grant Date -
N/A
app pub date -
Mar 12, 2001
filing date -
Jul 24, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a hearing aid having a microphone and an earphone with a signal processing unit connected therebetween, and a method for operating such a hearing aid, a filter element in the signal processing unit splits the signal from the microphone into a number of partial signals, and each of the partial signals is analyzed, to determine whether they respectively contain speech information, by comparing the magnitude of the envelope of the partial signal to the average value of the partial signal. For any partial signal having an envelope magnitude which exceeds the average value, the analysis unit operates an amplification stage to amplify that partial signal before it proceeds to the earphone.
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