Figure 6
From: A Ramp Cosine Cepstrum Model for the Parameter Estimation of Autoregressive Systems at Low SNR
Estimation results for a natural speech phoneme /a/ in the presence of a multitalker babble noise at 
dB. (a) PSD obtained by using different methods, (b) Average estimated poles (
) obtained from noise-corrupted speech by using the proposed method along with the noise-free estimates (
) obtained by the MLSYW method, wide-band spectrogram of the noise-free speech, and noise-free PSD.