Speech recognition system and speech file recording system

• US 20030163308A1
• Filed: 11/01/2002
• Published: 08/28/2003
• Est. Priority Date: 02/28/2002
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Matsuo, Naoshi
• Granted Patent: US 7,979,278 B2
• Time in Patent Office: Days
• US Class Current: 704/231
• CPC Class Codes: G10L 15/07 to the speaker

Abstract

A user term information extraction unit extracts term information of a user out of information that has been input by the user to an application for use other than speech recording beforehand, and a speech recognition dictionary management unit expands a vocabulary of a speech recognition dictionary according to the term information of the user. Next, the user inputs speech via a speech input unit, and a speech recognition unit executes speech recognition using the speech recognition dictionary. A representative term information selection unit extracts the term information of the user contained in the speech recognition result, and selects one or a plurality of pieces of representative term information from the term information of the user. A speech file recording unit records the speech data as a speech file, and renders a file name of the speech file according to the representative term information. Thus, a speech recognition and speech file recording system is provided that records input data as a speech file and automatically renders a file name thereto with which a content of the file can be grasped immediately.

Claims

1. A speech recognition system comprising:

a user term information extraction unit for extracting term information of a user from information input by the user to a certain application;

a speech recognition dictionary management unit having a first speech recognition dictionary, and expanding a vocabulary of the first speech recognition dictionary according to the term information of the user;

a speech input unit through which speech data of the user are input; and

a speech recognition unit for executing speech recognition of the speech data using the first speech recognition dictionary.

2. The speech recognition system according to claim 1, further comprising a speech recognition server on a network, for executing speech recognition using a second speech recognition dictionary having a larger vocabulary than that of the first speech recognition dictionary,

wherein, in the case where the speech recognition unit exhibits a lower recognition accuracy or reliability than a predetermined value, the speech recognition unit transmits the speech data to the speech recognition server via the network, and

the speech recognition server executes speech recognition of the speech data, and transmits a result of the speech recognition to the speech input unit.

3. The speech recognition system according to claim 2, wherein the speech recognition dictionary management unit expands a vocabulary of the first speech recognition dictionary according to the result of the speech recognition by the speech recognition server.

4. The speech recognition system according to claim 3, further comprising a selection unit with which the user selects whether or not the expansion of the vocabulary of the first speech recognition dictionary by the speech recognition dictionary management unit is executed.

5. A speech file recording system comprising:

a user term information extraction unit for extracting term information of a user from information input by the user to a certain application;

a speech recognition dictionary management unit having a first speech recognition dictionary, and expanding a vocabulary of the first speech recognition dictionary according to the term information of the user;

a speech input unit through which speech data of the user are input;

a speech file recording unit for recording the input speech data as a speech file;

a speech recognition unit for executing speech recognition of the speech data using the first speech recognition dictionary; and

a representative term information selection unit for extracting term information of the user contained in a result of the speech recognition, and selecting, as representative term information of the user, one or a plurality of pieces of information out of the term information of the user,

wherein the speech file recording unit renders a file name of the speech file according to the representative term information of the user.

6. The speech file recording system according to claim 5, further comprising a speech recognition server on a network, for executing speech recognition using a second speech recognition dictionary having a larger vocabulary than that of the first speech recognition dictionary,

wherein, in the case where the speech recognition unit exhibits a lower recognition accuracy or reliability than a predetermined value, the speech file recording unit transmits the speech file to the speech recognition server via the network,

the speech recognition server executes speech recognition of the speech data, and

the representative term information selection unit receives the result of the speech recognition from the speech recognition server via the network, extracts the term information of the user contained in the result of the speech recognition by the speech recognition server, and selects, as representative term information of the user, one or a plurality of pieces of information out of the term information of the user.

7. The speech file recording system according to claim 5, further comprising a speech file server for storing the speech file on the network, wherein

the speech file recording unit transfers the speech file and a retrieval keyword to the speech file server via the network so that the speech file is stored in the speech file server, and

the file name and retrieval keyword of the speech file, and a network address of the speech file server are recorded in the speech file recording unit.

8. The speech file recording system according to claim 6, further comprising a speech file server for storing the speech file on the network, wherein

the speech file recording unit transfers the speech file and a retrieval keyword to the speech file server via the network so that the speech file is stored in the speech file server, and

the file name and retrieval keyword of the speech file, and a network address of the speech file server are recorded in the speech file recording unit.

9. The speech file recording system according to claim 7, further comprising a digest speech data generation unit for, prior to the transfer of the speech file to the speech file server by the speech file recording unit, extracting a part of the speech data recorded in the speech file, and generating digest speech data of the speech file,

wherein the speech file recording unit records the digest speech data in addition to the file name and retrieval keyword of the speech file, and the network address of the speech file server.

10. The speech file recording system according to claim 8, further comprising a digest speech data generation unit for, prior to the transfer of the speech file to the speech file server by the speech file recording unit, extracting a part of the speech data recorded in the speech file, and generating digest speech data of the speech file,

wherein the speech file recording unit records the digest speech data in addition to the file name and retrieval keyword of the speech file, and the network address of the speech file server.

11. The speech file recording system according to claim 5, further comprising an electronic mail generating unit for generating an electronic mail composed of a title and a text, assigning a content of a recognition result of the speech data of the speech file as the text of the electronic mail, assigning the term information of the user contained in the recognition result of the speech data of the speech file as the title of the electronic mail, and rendering a file name of the electronic mail according to the representative term information.

12. The speech file recording system according to claim 6, further comprising an electronic mail generating unit for generating an electronic mail composed of a title and a text, assigning a content of a recognition result of the speech data of the speech file as the text of the electronic mail, assigning the term information of the user contained in the recognition result of the speech data of the speech file as the title of the electronic mail, and rendering a file name of the electronic mail according to the representative term information.

13. The speech file recording system according to claim 11, further comprising an electronic mail generating unit for generating an electronic mail composed of a title and a text, and assigning the file name of the speech file and a network address of the speech file server as the text of the electronic mail, and the term information of the user contained in the recognition result of the speech data of the speech file as the title of the electronic mail.

14. The speech file recording system according to claim 12, further comprising an electronic mail generating unit for generating an electronic mail composed of a title and a text, and assigning the file name of the speech file and a network address of the speech file server as the text of the electronic mail, and the term information of the user contained in the recognition result of the speech data of the speech file as the title of the electronic mail.

15. A speech recognition method comprising:

extracting term information of a user from information input by the user to a certain application;

holding a speech recognition dictionary, and expanding a vocabulary of the speech recognition dictionary, which is held for speech recognition, according to the extracted term information of the user;

inputting speech data of the user; and

executing speech recognition of the speech data using the speech recognition dictionary.

16. A recording medium storing a speech recognizing operation program for recognizing input speech data, the program comprising the program codes for:

an operation of extracting term information of a user from information input by the user to a certain application;

an operation of holding a speech recognition dictionary and expanding a vocabulary of the speech recognition dictionary according to the term information of the user;

an operation of inputting speech data of the user; and

an operation of executing speech recognition of the speech data using the speech recognition dictionary.

17. A speech file recording method comprising:

extracting term information of a user from information input by the user to a certain application;

holding a speech recognition dictionary, and expanding a vocabulary of the speech recognition dictionary according to the extracted term information of the user;

inputting speech data of the user;

recording the input speech data as a speech file;

executing speech recognition of the speech data using the speech recognition dictionary; and

extracting term information of the user contained in a result of the speech recognition, and selecting, as representative term information of the user, one or a plurality of pieces of information out of the term information of the user,

wherein a file name of the speech file is rendered according to the representative term information of the user.

18. A recording medium storing a speech file recording program for recording input speech data as a speech file, the program comprising the program codes for:

an operation of extracting term information of a user from information input by the user to a certain application;

an operation of holding a speech recognition dictionary and expanding a vocabulary of the speech recognition dictionary according to the extracted term information of the user;

an operation of inputting speech data of the user;

an operation of recording the input speech data as a speech file;

an operation of executing speech recognition of the speech data using the speech recognition dictionary;

an operation of extracting term information of the user contained in a result of the speech recognition, and selecting, as representative term information of the user, one or a plurality of pieces of information out of the term information of the user; and

an operation of rendering a file name of the speech file according to the representative term information of the user.