The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 20, 2001
Filed:
Jan. 22, 1999
William M. Kushner, Arlington Heights, IL (US);
Audrius Polikaitis, Lemont, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A communication device capable of endpointing speech utterances includes a microprocessor (,) connected to communication interface circuitry (,), memory (,), audio circuitry (,), an optional keypad (,), a display (,), and a vibrator/buzzer (,). Audio circuitry (,) is connected to microphone (,) and speaker (,). Microprocessor (,) includes a speech/noise classifier and speech recognition technology. Microprocessor (,) analyzes a speech signal to determine speech waveform parameters within a speech acquisition window. Microprocessor (,) compares the speech waveform parameters to determine the start and end points of the speech utterance. Microprocessor (,) starts at a frame index based on the energy centroid of the speech utterance and analyzes the frames preceding and following the frame index to determine the endpoints. When a potential endpoint is identified, microprocessor (,) compares the cumulative energy to the total energy of the speech acquisition window to determine whether additional speech frames are present. Accordingly, gaps and pauses in the utterance will not result in an erroneous endpoint determination.