Computational-tools for the Analysis of Acoustical and Physiological Criteria of the Singing Voice

Tools and methods for the calculation of acoustical, musical and physiological criteria using a sound file from the singing voice are presented, as well as tools for the automation of the time-dependant calculation processes used for analysis and statistics. The difference between recordings in an unechoic chamber and a simulated condition with reverberation is calculated using a soundfile recorded in the unechoic chamber and compared to its derivative altered by a hall simulator. The tools presented are Praat, Wavesurfer, SNDAN (used for Sound Analysis), TAP, ProToo (an automation tool with a graphical surface) and matlab Scripts like VoiceSauce (HNR, spectral tilt, formants) and Aparat (Inverse Filter). The acoustical criteria described are long time average spectra, α-factor, and time dependant probabilities of single vowels shown in the parameters loudness (rms), brilliancy (normalised spectral centroid), vibrato (pitch), Formants (LPC), and the spectra. Physiological criteria can be represented in spectral tilt (H1-H2, H1-A1, H1-A2, H1-A3), HNR and glottal parameters taken from inverse filtering.