Opens in a new tab

AES E-Library

← Back to search

Convention Paper

The Effects of Lossy Audio Encoding on Genre Classification Tasks

Authors: Casey, Michael; Fields, Ben; Jacobson, Kurt; Sandler, Mark

AES Convention 124 · Paper 7417 · May 2008

Abstract

In large audio collections, it is common to store audio content using perceptual encoding. However, encoding parameters may vary from collection to collection or even within a collection - using different bit rates, sample rates, codecs, etc. We evaluate the effect of various lossy audio encodings on the application of audio spectrum projection features to the automatic genre classification tasks. We show that decreases in mean classification accuracy, while small, are statistically significant for bit-rates of 96kbps or lower. Also, a heterogeneous collection of audio encodings has statistically significant decreases in mean classification accuracy compared to a pure PCM collection.

Details

Published in
AES Convention 124
AES Convention
124
Paper number
7417
Publication date
May 6, 2008
Session subject
Analysis and Synthesis of Sound
Affiliation
Queen Mary University of London;Goldsmith's College (See document for exact affiliation information.)
Type
Convention Paper