Title:
【発明の名称】音声信号中の独立単語境界決定方法
Document Type and Number:
Japanese Patent JPH06507507
Kind Code:
A
Abstract:
A method for analyzing a speech signal to isolate speech and nonspeech portions of the speech signal is provided. The method is applied to an input speech signal to determine boundary values locating isolated words or groups of words within the speech signal. First, a comparison signal is generated which is biased to emphasize components of the signal having preselected frequencies. Next, the system compares the comparison signal with a threshold level to determine estimated boundary values demonstrating the beginning and ending points of the words. Once the estimated boundary values are calculated, the system adjusts the boundary values to achieve final boundary values. The specific amount of adjustment varies, depending upon the amount of noise present in the signal. The final pair of boundary values provide a reliable indication of the location and duration of the isolated word or group of words within the speech signal.
Inventors:
Junka, Jean, Claude
Application Number:
JP51503493A
Publication Date:
August 25, 1994
Filing Date:
February 24, 1993
Export Citation:
Assignee:
Junka, Jean, Claude
International Classes:
G10L11/02; G10L15/04; G10L15/20; G10L21/02; (IPC1-7): G10L3/00
Domestic Patent References:
| JPH02232697A | 1990-09-14 | |||
| JPH02205898A | 1990-08-15 | |||
| JPS59105696A | 1984-06-19 | |||
| JPS5231606A | 1977-03-10 | |||
| JPS5925240B2 | 1984-06-15 | |||
| JPS6147437B2 | 1986-10-18 | |||
| JPS60205600A | 1985-10-17 | |||
| JPH04163497A | 1992-06-09 | |||
| JPS62204300A | 1987-09-08 | |||
| JPS60260096A | 1985-12-23 | |||
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| JPS6250837B2 | 1987-10-27 |
Foreign References:
| US4682361A | 1987-07-21 | |||
| FR2316814A1 | 1977-01-28 | |||
| GB1491662A | 1977-11-09 | |||
| US4057690A | 1977-11-08 | |||
| US4829578A | 1989-05-09 |
Attorney, Agent or Firm:
Shiro Nakajima