Title:
VOICE COMMUNICATION TERMINAL AND VOICE COMMUNICATION SYSTEM
Document Type and Number:
Japanese Patent JP3942831
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve the problem of the conventional voice communication terminal that the telephone call is made difficult by the echo of the self-terminal speech delayed greatly when the speech of the self-terminal is superimposed on the speech of other terminal, and the signal input, speech processing and outputting of the resultant speech are carried out.
SOLUTION: The voice communication terminal receives a speech and speech codes from separate terminals, respectively, encodes the inputted speech to obtain output speech codes, and decodes the speech codes to output the resultant speech from separate terminals. The voice communication terminal is provided with a correction means which corrects either inputted speech codes, decoded speech or the operation of a speech decoding means and reduces the amplitude of the portion ascribed to the inputted speech contained in the output speech on the basis of the similarity of the speech codes obtained by encoding the inputted speech and inputted speech codes.
Inventors:
Hirohisa Tazaki
Application Number:
JP2001029757A
Publication Date:
July 11, 2007
Filing Date:
February 06, 2001
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G10L13/04; G10L13/00; G10L19/00; G10L19/005; G10L21/0208; H03M7/30; H04M1/58; H04M3/56; (IPC1-7): G10L19/00; G10L13/00; H03M7/30
Domestic Patent References:
| JP63128823A | ||||
| JP2000148199A | ||||
| JP2002084212A |
Foreign References:
| WO1999041898A1 |
Attorney, Agent or Firm:
Hiroaki Tazawa
Konobu Kato
Hideaki Tazawa
Hamada Hatsune
Konobu Kato
Hideaki Tazawa
Hamada Hatsune