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# Speech Processing Overview

This section describes the concepts behind the HPE IDOL Speech Server speech processing functions.

Understand Audio

Audio Sources and Capture

Audio Capture

Clipping

Background Noise

Audio Compression

Audio Sampling Rate

Audio Bandwidth

Speech-to-Text

Measure Speech-to-Text Success Rates

Improve Speech-To-Text Success Rates

Language Models

Measure the Effectiveness of Language Models

Source Text for Building Custom Language Models

Build Custom Language Models

Acoustic Models

Phonetic Phrase Search

Speaker Identification

Spoken Language Identification

Audio Fingerprint Identification

Transcript Alignment

Transcript Language Models

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