06EC766 - SPEECH PROCESSING |
PART – A |
UNIT – I |
PRODUCTION AND CLASSIFICATION OF SPEECH SOUNDS:
Introduction, mechanism of speech production. Acoustic phonetics: vowels,
diphthongs, semivowels, nasals, fricatives, stops and affricates. |
UNIT – II |
TIME-DOMAIN METHODS FOR SPEECH PROCESSING: time
dependent processing of speech, short-time energy and average magnitude,
short-time average zero crossing rate. |
UNIT – III |
Speech vs. silence detection, pitch period estimation using parallel processing
approach, short-time autocorrelation function. |
UNIT – IV |
Brief Applications of temporal processing of speech signals in synthesis,
enhancement, hearing applications and clear speech. |
PART – B |
UNIT – V |
FREQUENCY DOMAIN METHODS FOR SPEECH PROCESSING:
Introduction, definitions and properties: Fourier transforms interpretation and
linear filter interpretation, sampling rates in time and frequency. |
UNIT – VI |
Filter bank summation and overlap add methods for short-time synthesis of
speech, sinusoidal and harmonic plus noise method of analysis/synthesis. |
UNIT – VII |
HOMOMORPHIC SPEECH PROCESSING: Introduction, homomorphic
system for convolution, the complex cepstrum of speech, homomorphic
vocoder. |
UNIT – VIII |
APPLICATIONS OF SPEECH PROCESSING: Brief applications of
speech processing in voice response systems hearing aid design and
recognition systems. |
REFERENCE |
TEXT BOOKS: |
1. Digital Processing of Speech Signals, L. R. Rabiner and R. W.
Schafer, Pearson Education Asia, 2004. |
Reference Books |
1. Discrete Time Speech Signal Processing, T. F. Quatieri, Pearson
Education Asia, 2004.
2. Speech and Audio Signal Processing: Processing and Perception
of Speech and Music, B. Gold and N. Morgan, John Wiley, 2004. |