The Effects of Lossy Audio Encoding on Onset Detection Tasks

Submitted by drupaladmin on Tue, 12/09/2008 - 11:54.

Publication Type:

Conference Paper

Authors:

Jacobson, K.; Davies, M.; Sandler, M.

Source:

125th AES Convention, San Francisco, CA, USA (2008)

Abstract:

In large audio collections, it is common to store audio content with 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 audio encodings on the onset detection task. We show that audio-based onset detection methods are surprisingly robust in the presence of MP3 encoded audio. Statistically significant changes in onset detection accuracy only occur at bit-rates lower than 32kbps.