EFFECT FROM THE ACADEMIC YEAR 2013 - 2014

 

EC 464

SPEECH PROCESSING

 

                                                                              (ELECTIVE –II)

 

Instruction                                                                                                                                                                                        4  Periods per week

Duration of University Examination                                                                                                                                                   3  Hours

University Examination                                                                                                                                                                     75 Marks

Sessional                                                                                                                                                                                         25 Marks


UNIT-I                                                                  

 

Mechanism of speech production, source filter model of speech production, speech sounds . Differential PCM. Adaptive delta modulation, Adaptive differential PCM (ADPCM).

 

Short time spectral analysis, cepstral analysis, Auto correlation function, Linear predictive analysis, pitch synchronous analysis.

 

UNIT-II

 

Short –time Energy function, zero crossing rate, End point detection, vector quantization. Format Tracking; Pitch extraction.

 

UNIT-III

 

Format synthesizer; Linear predictive synthesizer, phone use synthesis, Introduction to Text-to-speech and Articulator speech synthesis.

 

UNIT-IV

 

Sub-band coding, Transforms coding, channel decoder, Formant decoder, cepstral decoder, linear predictive decoder, vector quantizer coder.

 

UNIT-V

 

Problems in Automatic speech recognition, Dynamic warping, Hidden Markow models, speaker Identification / verification.

 

Suggested Reading :

 

1.          Daniel Jurefskey & James H. Martin, “Speech and Language Processing”, Pearson Education, 2003.

 

2.          Rabiner and Schafer, “Digital Processing of Speech Signals”, PHI, 1978.

 

3.          Owens F.J., “Signal Processing of Speech”, Macmillan, 2000.

 

4.          Papamchalis, “Practical Approaches to Speech Coding”, PHI, 1987.


 

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