Phonetic Search Methods for Large Speech Databases - Tapa blanda

Sinopsis

1 Keyword Spotting out of Continuous Speech. 1.1 Introduction. 1.2 Problem Formulation: KWS in Large Speech Databases. 1.3 Target Applications of Keyword Spotting. 2 Keyword Spotting Methods. 2.1 LVCSR-Based KWS. 2.2 Acoustic KWS. 2.3 Phonetic Search KWS. 2.4 Discussion: Why Phonetic Search?. 2.4.1 Response Time. 2.4.2 KWS Performance. 2.4.3 Keyword Flexibility. 3 Phonetic Search. 3.1 The Search Mechanism. 3.2 Using Phonetic Search for KWS. 3.3 Computational Complexity Analysis. 4 Search Space Complexity Reduction. 4.1 Overview. 4.2 Complexity Reduction in Phonetic Search. 4.3 Anchor-based Phonetic Search. 5 Evaluating Phonetic Search KWS. 5.1 Performance Metrics. 5.2 Evaluation Process. 5.3 Evaluation Databases. 6 Evaluation Results. 6.1 Exhaustive Search. 6.1.1 Textual Benchmark. 6.1.2 KWS on Speech. 6.2 Anchor-based Search. 6.2.1 Textual Benchmark. 6.2.2 Reduced Complexity KWS on Speech. 6.2.3 Multiple Thresholds. 6.3 Lessons Learned from the Evaluation. 7 Summary. 8 Glossary of Acronyms. 9 References

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