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Convention Paper Open Access

Phoneme Mappings for Online Vocal Percussion Transcription

Authors: Delgado Alejandro; Saitis, Charalampos; Sandler, Mark

AES Convention 151 · Paper 10529 · October 2021

Abstract

Vocal Percussion Transcription (VPT) aims at detecting vocal percussion sound events in a beatboxing performance and classifying them into the correct drum instrument class (kick, snare, or hi-hat). To do this in an online (real-time) setting, however, algorithms are forced to classify these events within just a few milliseconds after they are detected. The purpose of this study was to investigate which phoneme-to-instrument mappings are the most robust for online transcription purposes. We used three different evaluation criteria to base our decision upon: frequency of use of phonemes among different performers, spectral similarity to reference drum sounds, and classification separability. With these criteria applied, the recommended mappings would potentially feel natural for performers to articulate while enabling the classification algorithms to achieve the best performance possible. Given the final results, we provided a detailed discussion on which phonemes to choose given different contexts and applications.

Details

Published in
AES Convention 151
AES Convention
151
Paper number
10529
Publication date
October 6, 2021
Session subject
Audio Signal Processing
Affiliation
Roli Ltd., London, UK; Queen Mary University of London, London, UK (See document for exact affiliation information.)
Type
Convention Paper