7th International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2011)
A new multipurpose voice analysis tool named BioVoice2, suited for the analysis of strongly irregular signals and long sentences, is applied on voices of patients diagnosed with adductor spasmodic dysphonia before and after treatment with botulinum toxin injection. The speech material consists of 40 short German sentences phonetically selected to be constantly voiced. nine acoustic parameters were taken into account from all those estimated with BioVoice2. Significant improvement of voice quality was estimated by a subset of these parameters related to increased voicing, improved regularity of vocal fold vibration, reduction of spasms and faster speech rate. BioVoice2 proves to be a useful tool for objectifying voice quality also in case of strong signal irregularity.
Index Terms. spasmodic dysphonia, voice analysis, acoustic parameters, botulinum
Full Paper (reprinted with permission from Firenze University Press)
Bibliographic reference. Giordano, A. / Dejonckere, Philippe H. / Manfredi, Claudia (2011): "Acoustic assessment of spasmodic dysphonia using a new multipurpose voice analysis tool", In MAVEBA-2011, 147-150.