20091ee114_1_CA4_Sol

# 20091ee114_1_CA4_Sol - UCLA Dept. of Electrical Engineering...

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UCLA Dept. of Electrical Engineering EE 114, Winter 2009 Computer Assignment 4: Linear Predictive Analysis Abstract : This assignment explores the role of linear prediction in spectral analysis for speech. Speciﬁcally, this assignment focusses on the eﬀect of prediction order on resulting spectral approx- imations. Questions : 1. The spectrum corresponds to narrowband analysis. This apparent by the resolved harmonics and generally high spectral resolution. 2. The ﬁrst three formant frequencies can be estimated to be F 1 =700 Hz, F 2 =1150 Hz, and F 3 =2400 Hz. Questions : 1. 0 0.5 1 1.5 2 2.5 3 -20 -10 0 10 20 30 Pole-Zero Map Real Axis Imaginary Axis -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 -1 -0.5 0 0.5 1 Figure 1: Approximated spectrum and pole-zero map obtained from 4 th order linear predictive analysis. Linear predictive analysis with order P =4 does not provide adequate information to estimate three formant frequencies. However, with P =6, the formant frequencies can be estimated as F 1 =700 Hz,

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## This note was uploaded on 05/10/2010 for the course EE EE114 taught by Professor Vanderschaar during the Spring '09 term at UCLA.

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20091ee114_1_CA4_Sol - UCLA Dept. of Electrical Engineering...

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