System and method for speech enhancement

Data processing: speech signal processing – linguistics – language – Speech signal processing – Recognition

Reexamination Certificate

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C704S228000

Reexamination Certificate

active

10328687

ABSTRACT:
A method and apparatus for reducing noise in a speech signal. A handset or remote unit provides to users with a hearing deficiency, a first mode of operation where noise suppressant/speech enhancement algorithms are used during any auditory-related service. There is also provided, in a related mode of operation, speech filtering for reducing noise in a speech signal received through the microphone and outputting the filtered sound to the speaker. The handset includes a microphone for receiving an auditory sound, a receiver for receiving an auditory signal and a speech filter for suppressing noise in the auditory signal and sound. The speech filter also may be configured to shift the frequency and/or alter the intensity of the auditory signal and sound. The speaker is used for amplifying and outputting the enhanced speech component as an audible sound.

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Steve Unger, “Setting Up ALDs for a Meeting or Conference” AN002, Feb. 1995, © Assistive Listening Device Systems (ALDS), Inc. (3 pp.).
Steve Unger, “What is an Assistive Listening Device?” AN004, May 1995, © Assistive Listening Device Systems (ALDS), Inc. (1 p).
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