Introduction, mechanism of speech production. Acoustic phonetics: vowels, diphthongs, semivowels, nasals, fricatives, stops and affricates.
time dependent processing of speech, short-time energy and average magnitude, short-time average zero crossing rate.
Speech vs. silence detection, pitch period estimation using parallel processing approach, short-time autocorrelation function.
Brief Applications of temporal processing of speech signals in synthesis, enhancement, hearing applications and clear speech.
Introduction, definitions and properties: Fourier transforms interpretation and linear filter interpretation, sampling rates in time and frequency.
Filter bank summation and overlap add methods for short-time synthesis of speech, sinusoidal and harmonic plus noise method of analysis/synthesis.
Introduction, homomorphic system for convolution, the complex cepstrum of speech, homomorphic vocoder.
Brief applications of speech processing in voice response systems hearing aid design and recognition systems.