Toward Improved Ecological Validity in the Acoustic Measurement of Overall Voice Quality: Combining Continuous Speech and Sustained Vowels

Cepstral peak prominence: A comprehensive analysis

“…Such a definite statement made by Maryn et al is based on a meta-analysis that considered previous results by Wolfe and Martin [2], Wolfe et al [3], Heman-Ackah et al [4], Halberstam [5], and Eadie and Baylor [6]; yet, later results are also consistent with that assertion, as those published by Awan et al [7], Awan and Roy [8], Maryn et al [9,10], Shueetal. [11], Alpan et al [12], and Petterson et al [13].…”

“…Therefore, H(f) in (8) can be modelled as an all-pole filter: (9) where n p is the number of poles and s p are the poles themselves. Taking the logarithm of the modulus we get:…”

“…Solving we get (see Appendix A for details): (10) (11) (12) where <5( •) is the Dirac delta function, n rp is the number of real poles in (9), n cp is the number of complex conjugate pole pairs in (9) and o\ and &>/ respectively are the real and complex parts of such poles. Note that the all-pole system that models the effect of the vocal tract plus lip radiation is represented in cepstral domain by the combination of an impulse centred at zero quefrency plus a sum of negative exponentials (0^ < 0 if we assume that the vocal tract behaves as a stable system) and damped sinusoids.…”

“…[11], Alpan et al [12], and Petterson et al [13]. Conclusions from these have led some researchers to suggest the inclusion of CPP in the computation of some objective measures of dysphonia such as the acoustic indexes of dysphonia severity proposed by Awan and Roy [8,7], the Acoustic Voice Quality Index [9,10], and the Cepstral Spectral Index of Dysphonia [13]. Being a widely tested measure of dysphonia severity, CPP has also been proposed as a relevant measure to assess the effect of different treatments.…”

Aplicação de uma rede neural artificial para a avaliação da rugosidade e soprosidade vocal

“…Sabe-se que as pesquisas que envolvem avaliações perceptivo-auditivas, geralmente tem mais de um juiz (BELE, 2005;ENGLERT et al, 2015;FINK et al, 2015;MADAZIO;LEÃO;BEHLAU, 2011;KIM;KIM, 2015;MARYN et al, 2010;NEMR et al, 2012;TEIXEIRA;BEHLAU, 2015), não havendo um consenso quanto ao número de juízes indicado.…”