TRANSCRIPTION SUPPORT SYSTEM AND TRANSCRIPTION SUPPORT METHOD

• US 20130030805A1
• Filed: 03/15/2012
• Published: 01/31/2013
• Est. Priority Date: 07/26/2011
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Suzuki, Hirokazu, Shimogori, Nobuhiro, Ikeda, Tomoo, Ueno, Kouji, Nishiyama, Osamu, Nagao, Manabu
• Granted Patent: US 10,304,457 B2
• Time in Patent Office: Days
• US Class Current: 704/235
• CPC Class Codes: G10L 15/26 Speech to text systems G10L15/08 takes precedence

Abstract

According to one embodiment, a transcription support system supports transcription work to convert voice data to text. The system includes a first storage unit configured to store therein the voice data; a playback unit configured to play back the voice data; a second storage unit configured to store therein voice indices, each of which associates a character string obtained from a voice recognition process with voice positional information, for which the voice positional information is indicative of a temporal position in the voice data and corresponds to the character string; a text creating unit that creates the text in response to an operation input of a user; and an estimation unit configured to estimate already-transcribed voice positional information indicative of a position at which the creation of the text is completed in the voice data based on the voice indices.

Claims

1. A transcription support system comprising:

a first storage unit configured to store therein voice data;

a playback unit configured to play back the voice data;

a second storage unit configured to store therein voice indices, each of which associates a character string obtained from a voice recognition process with voice positional information, the voice positional information indicative of a temporal position in the voice data and corresponding to the character string;

a text creating unit that creates text in response to an operation input of a user; and

an estimation unit configured to estimate already-transcribed voice positional information indicative of a temporal position at which the creation of the text is completed in the voice data based on the voice indices.

2. The system according to claim 1, wherein,

when the estimation unit determines that a last character string of the text matches any of the character strings included in the voice indices, the estimation unit retrieves, from the voice indices, the voice positional information corresponding to the character string matched with the last character string so as to estimate the already-transcribed voice positional information from the retrieved voice positional information.

3. The system according to claim 2, wherein,

when the estimation unit determines that the last character string of the text does not match any of the character strings included in the voice indices and further determines that any of the character strings other than the last character string of the text matches any of the character strings included in the voice indices, the estimation unit retrieves, from the voice indices, the voice positional information corresponding to a basing character string indicative of a character string closest to the last character string among the character strings matched with any of the character strings included in the voice indices, estimates a first playback time indicative of a time necessary to play back mismatched character strings indicative of the character strings from the character string next to the basing character string to the last character string among the character strings constituting the text, and estimates the already-transcribed voice positional information from the voice positional information corresponding to the basing character string and the first playback time.

4. The system according to claim 2, wherein,

when the estimation unit determines that none of the character strings constituting the text match any of the character strings included in the voice indices, the estimation unit estimates a second playback time indicative of a time necessary to play back the text and estimates the already-transcribed voice positional information from the second playback time.

5. The system according to claim 2, wherein,

when the estimation unit determines that the last character string of the text matches any of the character strings included in the voice indices and further determines that the character string other than the last character string of the text does not match any of the character strings included in the voice indices, the estimation unit determines whether a predetermined condition is satisfied, retrieves, from the voice indices, the voice positional information corresponding to the last character string when the predetermined condition is satisfied, and estimates the already-transcribed voice positional information from the retrieved voice positional information.

6. The system according to claim 5, wherein

when, among the character strings constituting the text, the number of character strings matched with any of the character strings included in the voice indices is equal to or larger than a predetermined value, the estimation unit determines that the predetermined condition is satisfied.

7. The system according to claim 5, wherein

when the character string other than the last character string matches any of the character strings included in the voice indices and when a difference between the voice positional information corresponding to the character string closest to the last character string among the character strings matched with any of the character strings included in the voice indices and the voice positional information corresponding to the last character string falls within a predetermined range, the estimation unit determines that the predetermined condition is satisfied.

8. The system according to claim 1, wherein the voice text data has a lattice structure.

9. A transcription support method comprising:

playing back voice data;

creating text in response to an operation input of a user; and

estimating already-transcribed voice positional information indicative of a temporal position at which the creation of the text is completed in the voice data based on voice indices, each of which associates a character string obtained from a voice recognition process with voice positional information, the voice positional information indicative of a temporal position in the voice data and corresponding to the character string.