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Convention Paper

Analysis and Prediction of the Audio Feature Space when Mixing Raw Recordings into Individual Stems

Authors: Martinez Ramirez, Marco A.; Reiss, Joshua D.

AES Convention 143 · Paper 9848 · October 2017

Abstract

Processing individual stems from raw recordings is one of the first steps of multitrack audio mixing. In this work we explore which set of low-level audio features are sufficient to design a prediction model for this transformation. We extract a large set of audio features from bass, guitar, vocal, and keys raw recordings and stems. We show that a procedure based on random forests classifiers can lead us to reduce significantly the number of features and we use the selected audio features to train various multi-output regression models. Thus, we investigate stem processing as a content-based transformation, where the inherent content of raw recordings leads us to predict the change of feature values that occurred within the transformation.

Details

Published in
AES Convention 143
AES Convention
143
Paper number
9848
Publication date
October 6, 2017
Session subject
Recording and Production
Affiliation
Queen Mary University of London, London, UK (See document for exact affiliation information.)
Type
Convention Paper