V3 Ã2, 6 ECTS - Fachgruppe Informatik an der RWTH Aachen
V3 Ã2, 6 ECTS - Fachgruppe Informatik an der RWTH Aachen
V3 Ã2, 6 ECTS - Fachgruppe Informatik an der RWTH Aachen
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Lehrstuhl für <strong>Informatik</strong> 6<br />
Dr. rer. nat. Ralf Schlüter<br />
Prof. Dr. Herm<strong>an</strong>n Ney<br />
Lecture: Automatic Speech Recognition<br />
• Aim: extract spoken word sequence from acoustic<br />
signal<br />
• Automatic speech recognition system typically<br />
consists of four parts:<br />
– signal <strong>an</strong>alysis: extracts time-dependent features from<br />
acoustic signal<br />
– acoustic model: establishes link between features <strong>an</strong>d<br />
words/phonemes<br />
– l<strong>an</strong>guage model: covers syntactic <strong>an</strong>d sem<strong>an</strong>tic<br />
constraints of the l<strong>an</strong>guage<br />
– search process: determines maximum probability word<br />
sequence
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