Self-adaptive endpoint detection method and self-adaptive endpoint detection system for isolate word speech recognition

Abstract

The invention discloses a self-adaptive endpoint detection method and a self-adaptive endpoint detection system for isolate word speech recognition. The self-adaptive endpoint detection method for isolate word speech recognition comprises the following steps: a, a voice input step, wherein a voice signal containing an isolate word to be recognized is input; b, a voice preprocessing step, wherein the voice signal is subjected to amplitude translation and normalization and framing processing operation, and short time average energy and a short time average zero-crossing rate of each frame of voice are calculated; c, an isolate word endpoint rough detection step, wherein isolate word endpoints are roughly estimated through utilization of the short time average energy and the short time average zero-crossing rate of each frame of the voice signal and constraint on the shortest length of continuous voice frames before and after the end points, d, a detection threshold self-adaptive adjustment and accurate endpoint detection step, wherein through utilization of constraint on the smallest time duration and the largest time duration of the isolate word, the detection threshold is subjected to dynamic adjustment operation, the voice endpoints are subjected to front and back fine adjustment, and accurate isolate word endpoints are obtained; e, an isolate word endpoint output and isolate word voice recognition step, wherein the accurate isolate word endpoints are output and isolate word recognition is realized by using voice recognizing technologies.

Description

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AI Technical Summary

Benefits of technology

This innovation improves upon existing methods that use double thresholds or other techniques like signal processing technology (SPT) to identify words without being influenced from background noises such as music sounds or conversations during conversation. By adding this technique into our algorithms we aim to improve their effectiveness while also reducing interference caused by these sources.

Problems solved by technology

Technological Problem: The technical problem addressed in this patented method for detecting spoken words accurately without affecting other sounds like music during conversations between users who are speaking over different languages.

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