I want to learn how to recognise voice signal processing.

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Speech-recognition technology is embedded in voice-activated routing systems at customer call centres, voice dialling on mobile phones, and many other everyday applications. A robust speech-recognition system combines accuracy of identification with the ability to filter out noise and adapt to other acoustic conditions, such as the speaker’s speech rate and accent. Designing a robust speech-recognition algorithm is a complex task requiring detailed knowledge of signal processing and statistical modeling.

This article demonstrates a workflow that uses built-in functionality in MATLAB® and related products to develop the algorithm for an isolated digit recognition system. The system is speaker-dependent—that is, it recognizes speech only from one particular speaker’s voice.