Unlike many acoustic measures, Cepstral Peak Prominence (CPP) has shown consistently high correlations with subjective vocal quality ratings. However, this superiority of the CPP index is reported based on empirical results, with its theoretical advantages not always clearly stated. In this paper the properties of the CPP which makes it a good predictor for vocal quality are addressed, as well as how it differs from other measures. The reported experimental setups of the previous studies are analyzed, and reasons for the observed variability in the results are given. After this discussion, the clinical usefulness of CPP is addressed. This paper can be useful for researchers as well as for clinicians, in planning the experimental setup and interpreting the relevance of the results.
Index Terms. Cepstrum, vocal quality, breathiness, roughness
Cite as: Ferrer, C.A., Bodt, M.S.d., Maryn, Y., Heyning, P.V.d., Hernández-Díaz Huici, M.E. (2007) Properties of the cepstral peak prominence and its usefulness in vocal quality measurements. Proc. Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2007), 93-96
@inproceedings{ferrer07_maveba,
author={C. A. Ferrer and M. S. de Bodt and Y. Maryn and P. Van de Heyning and Maria E. {Hernández-Díaz Huici}},
title={{Properties of the cepstral peak prominence and its usefulness in vocal quality measurements}},
year=2007,
booktitle={Proc. Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2007)},
pages={93--96}
}