This document discusses speech emotion recognition using principal component analysis (PCA). It analyzes speech features like mel frequency cepstral coefficients, pitch, energy, and formant frequency from the Berlin database containing emotions like anger, sadness, happiness, and fear. PCA is applied to reduce the feature dimension and decorrelate features. A support vector machine classifier is then used to classify emotions based on the PCA-processed features. Results show applying PCA improves the classification accuracy compared to without using PCA, with accuracy increasing from 68% to 64.5% on average.