Digital Signal Processing Chapter 7: Parametric Spectrum Estimation

• application for speech codingsource filter modelof speech generation:• Waveform-Coding of the exciting signal:transmission of the AR coefficients and prediction error signal in reduced form(e.g. undersampled: RELP = Residual Excited LPC)• Codebook excitation:transmission of the prediction error applying the principle of vector quantization• Pitch excitation:no transmission of the prediction error ⇒ “voiced (including a pitch frequency)/unvoiced”application for speech coding Page 38