Method of supporting the proof-reading of speech-recognized text with a replay speed adapted to the recognition reliability

• US 20030028375A1
• Filed: 07/31/2002
• Published: 02/06/2003
• Est. Priority Date: 08/04/2001
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Kellner, Andreas
• Granted Patent: US 7,480,613 B2
• Time in Patent Office: Days
• US Class Current: 704/235
• CPC Class Codes: G10L 13/00 Speech synthesis; Text to speech systems
• CPC Class Codes: G10L 15/22 Procedures used during a speech recognition process, e.g. man-machine dialogue
• CPC Class Codes: G10L 2015/225 Feedback of the input speech

Abstract

The invention relates to a method of supporting the proof-reading of a text (2, 30) obtained in particular by speech recognition from a speech signal (1), of which at least one text component (B1 to B5) has a reliability level (3) for its correctness, which method comprises a control of the progression of the replay speed (12, 13) of the part of the speech signal (1) belonging to the text component (B1 to B5) as a function of the reliability level (3) of the text component (B1 to B5).

Faster replay of the reliable passages of a speech signal (1) shortens the working time required for proof-reading, while the slow replay of the unreliable passages raises the attention of the proof-reading user. An acoustic and/or visual (32) marking of the passage as a function of its reliability (3) is advantageous. The method according to the invention is particularly suitable for implementation within a speech recognition system.

Claims

1. A method of supporting the proof-reading of a text (2, 30) obtained by speech recognition of a speech signal (1), of which at least one text component (B1 to B5) has a reliability level (3) for the correctness of its speech recognition, wherein the method comprises a control of the progression of the replay speed (12, 13) of the part of the speech signal (1) belonging to the text component (B1 to B5) as a function of the reliability level (3) of the text component (B1 to B5).

2. A method as claimed in claim 1, characterized in that the progressions of the replay speeds (13) of temporally adjacent parts of the speech signal (1) are adjusted to each other.

3. A method as claimed in claim 1, characterized in that the progression of the replay speed (12, 13) of the part of the speech signal (1) is controlled without changing the gradient of the pitch of the part of the speech signal (1).

4. A method as claimed in claim 1, characterized in that

the value range of the reliability levels (3) is divided into sub-ranges,

and in that the progression of the replay speed (12, 13) of the part of the speech signal (1) belonging to the text component (B1 to B5) is controlled as a function of the sub-range to which the reliability level (3) of the text component (B1 to B5) is allocated.

5. A method as claimed in claim 1, characterized in that the reliability level (3) of the text component (B1 to B5) is marked acoustically and/or visually (32).

6. A method as claimed in claim 1, characterized in that

the dependency between the progression of the replay speed (12, 13) and the reliability level (3) of the text component (B1 to B5) and/or

the degree of adjustment (A1 to A3) of the progressions of the replay speeds (13) of temporally adjacent parts of the speech signal (1) and/or

the sub-ranges of the reliability levels (3) and/or

the method of acoustic and/or visual marking (32) of the reliability level (3) of the text component (B1 to B5), can be configured by a user of the method.

7. A device for supporting the proof-reading of a text (2, 30) obtained by speech recognition of a speech signal (1), of which at least one text component (B1 to B5) has a reliability level (3) for the correctness of its speech recognition, wherein the device is designed to control the progression of the replay speed (12, 13) of the part of the speech signal (1) belonging to the text component (B1 to B5) as a function of the reliability level (3) of the text component (B1 to B5).

8. A speech recognition system with a device for supporting proof-reading of a text (2, 30) obtained by speech recognition of the speech signal (1), of which at least one text component (B1 to B5) has a reliability level (3) for the correctness of its speech recognition, wherein the device is designed to control the progression of the replay speed (12, 13) of the part of the speech signal (1) belonging to the text component (B1 to B5) as a function of the reliability level (3) of the text component (B1 to B5).

9. A method of supporting the proof-reading of a text (2, 30) obtained by transcription into written form of a speech signal (1), of which at least one text component (B1 to B5) has a reliability level (3) for its correctness and of which the part of the speech signal (1) belonging to this is known, where the method includes controlling the progression of the replay speed (12, 13) of the part of the speech signal (1) belonging to the text component (B1 to B5) as a function of the reliability level (3) of the text component (B1 to B5).

10. A method to support the proof-reading of a text (2, 30) obtained by transcription into written form of a speech signal (1), with the steps of:

determining the part of the speech signal (1) belonging to the text component (B1 to B5) by time warping of the text (2, 30) to the speech signal (1),

determining a reliability level (3) for the correctness of the text component (B1 to B5),

and controlling the progression of the replay speed (12, 13) of the part of the speech signal (1) belonging to the text component (B1 to B5) as a function of the reliability level (3) of the text component (B1 to B5).