Speech section detection apparatus

Details Speech section detection apparatus Speech section detection apparatus

2007-06-12

2007-06-12

Chawan, Vijay (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S226000, C704S253000, C704S207000

Reexamination Certificate

active

10401107

ABSTRACT:
A speech section detection apparatus capable of reliably detecting a speech section even for a word containing a glottal stop sound or for a word containing a succession of “s” column sounds or “h” column sounds (sounds in the third column or the sixth column in the Japanese Goju-on Zu syllabary table). A speech signal detected by a microphone is amplified by a line amplifier, and converted by an analog/digital converter into a digital signal which is then stored in a memory. The stored speech signal is fetched into a pitch detector where a speech pitch is extracted by processing the speech signal in time domain. A gate signal generator controls the gate signal based on the speech pitch, and a speech section signal generator controls a speech section signal based on the gate signal. A word can be extracted by segmenting the speech signal stored in the memory in accordance with the speech section signal.

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Patent Abstract of Japan, Publication No. 09-050297, Published on Feb. 18, 1997, in the Name of Nakamura Masataka, et al.

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