Figure 8
From: Comparison of Linear Prediction Models for Audio Signals
Selective LP model of synthetic audio signal plus noise (SNR  = 25 dB) with order 
, downsampling factor 
, and autocorrelation method: (a) noisy synthetic audio signal magnitude spectrum (downsampled scale), (b) PEF pole-zero plot (downsampled scale), (c) PEF magnitude response (downsampled scale), (d) PEF pole-zero plot (original scale), (e) PEF magnitude response (original scale).