Intelligibility control for speech communications systems

Details Intelligibility control for speech communications systems Intelligibility control for speech communications systems

2002-05-30

2008-11-25

McFadden, Susan (Department: 2626)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

Reexamination Certificate

active

07457757

ABSTRACT:
A method of enhancing the intelligibility of speech sounds in a communications headset, includes: detecting an incoming signal with speech content; based upon detectable parameters in the incoming signal, determining a combination of signal processing parameters including a high pass cutoff frequency value and a low pass cutoff frequency value for a filtering function, and an expander threshold level, an expander attack time, and an expander release time for an expander function; and sequentially applying the filtering function and expander function to the incoming signal so that the degraded sound quality of the incoming signal may be modified real-time to increase intelligibility as variations occur in speech sound quality of the incoming signal.

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patent: 5794187 (1998-08-01), Franklin et al.
patent: 6597301 (2003-07-01), Cerra

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