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专利名称：Signal processing circuit and method for
increasing speech intelligibility
发明人：Gillray L. Kandel,Lee E. Ostrander申请号：US10695246申请日：20031027
公开号：US20040199380A1公开日：20041007
专利附图：
摘要：In a signal processing circuit and method for increasing speech intelligibility, areceiving circuit may receive an audio signal detectable by a human. A gain amplifyingcircuit provides gain amplification of the audio signal. A shaping filter modifies the audio
signal to be in phase with a second audio signal present at the receiving circuit and whichis detected by the human unprocessed by the signal processing circuit. The shaping filterfurther differentially amplifies first and second speech formant frequencies to restore anormal loudness relationship between them. A feedback circuit controls the gainamplification in the gain amplifying circuit for enabling the signal processing circuit tosubstantially prevent regenerative oscillation of the amplified audio signal. Additionally, asignal tone may be injected into the signal processing circuit for automatically controllingthe gain amplifying circuit.
申请人：KANDEL GILLRAY L.,OSTRANDER LEE E.
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