VOICE ACTIVATION DETECTING METHOD

Title:

VOICE ACTIVATION DETECTING METHOD

Document Type and Number:

Japanese Patent JPS603240

Kind Code:

A

Abstract:

Speech signal presence is detected in a VAD (Voice Activity Detector) in two steps: (1) Signal energy above a threshold decides presence, below threshold decides ambiguity; (2) ambiguity is resolved by testing the rate of change of spectral parameters.

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Inventors:

ANDORE DEPURATSUSHIYU
KUROODO GIYARAN
ROBEERU BERUMOOGOOSHII

Application Number:

JP4732584A

Publication Date:

January 09, 1985

Filing Date:

March 14, 1984

Export Citation:

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Assignee:

IBM

International Classes:

G10L11/02; H04J3/16; H04J3/17; (IPC1-7): H04J3/17

Attorney, Agent or Firm:

Koichi Tonmiya

Next Patent: PRIVACY CALL COMMUNICATING DEVICE