通話装置

Japanese Patent JP5816857

B2

PROBLEM TO BE SOLVED: To provide a telephone device that suppresses occurrence of echo caused by reverberant sound.SOLUTION: A telephone device 1 has a voice switch unit 10 for switching a call receiving state and a call transmitting state, and a calling speed converter 11 for executing calling speed conversion processing of expanding the calling speed of received call voices at a predetermined expansion rate when the voice switch unit 10 is under a state other than a call transmitting state, and stopping the calling speed conversion processing when the voice switch unit 10 is under the call transmitting state. The calling speed converter 11 sets the expansion rate of the calling speed in the calling speed conversion processing to be lower than the predetermined expansion rate during a fixed time period after the voice switch unit 10 is switched from the call transmitting state to a state other than the call transmitting state, so that the calling speed conversion processing can be controlled so as to suppress reverberant sound.

Teppei Eagle
Keiichi Yoshida
Minoru Fukushima

JP2011011188A

November 18, 2015

January 21, 2011

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Panasonic IP Management Co., Ltd.

H04M9/10; G10L21/0208; G10L21/043; H04M1/00

JP2010028570A
JP2001045108A
JP2009105666A
JP11327591A
JP2003163716A
JP2003092623A
JP2001016319A
JP2004088369A
JP7240783A
JP3241952A
JP2010118793A

WO2009011021A1
US20040179676

Keisei Nishikawa
Takeshi Sakaguchi
Hidetoshi Kitade
Nakaishi Haruki

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