Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Reexamination Certificate
2007-08-31
2011-11-22
Chawan, Vijay (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
C704S209000, C704S220000, C704S219000, C704S267000
Reexamination Certificate
active
08065138
ABSTRACT:
A speech processing apparatus includes a spectrum envelope extracting unit which extracts the spectrum envelope of an input speech signal, a spectrum envelope deforming unit which applies deformation to the spectrum envelope to generate a deformed spectrum envelope, a spectrum fine structure extracting unit which extracts the spectrum fine structure of the input speech signal, a deformed spectrum generating unit which generates a deformed spectrum by combining the deformed spectrum envelope with the spectrum fine structure, and a speech generating unit which generates an output speech signal on the basis of the deformed spectrum. This apparatus emits a disrupting sound based on the output speech signal to prevent a third party from eavesdropping on a conversation.
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Tesuro Saeki et al, “Selection of Meaningless Steady Nosie for Masking of Speech”, the transactions of the Institute of Electronics, Information and Communication Engineers, J86-A, No. 2, Feb. 2003, pp. 187-191.
Office Action issued on Jan. 18, 2011 in Japanese Patent Application No. 2005-056342 (with English Translation).
Akagi Masato
Futonagane Rieko
Irie Yoshihiro
Tanaka Yoshitane
Yanagiuchi Hisakazu
Chawan Vijay
Glory Ltd.
Japan Advanced Institute of Science and Technology
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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