title: Vibrato and tremor extent spectrum: algorithm and applications.
abstract: This work investigated the measurement of vibrato and tremor extent values. Related works have not explored the possibility of measuring extent in the spectra of fundamental frequency (f(0)) low-frequency undulations. It is shown here that by canceling average (DC) values and baseline drifts of f(0) contours, as well as weighting the respective spectra by the time window DC value, extent measures can be promptly obtained in the frequency domain. The method is illustrated with measurements from synthetic and human data.
authors.affiliation: Departamento de Física, Universidade Federal de Minas Gerais, Caixa Postal 702, CEP 30.123-970, Belo Horizonte, MG, Brazil. maurilio@fisica.ufmg.br
authors.forename: Maurílio N
authors.initials: MN
authors.lastname: Vieira
authors.forename: José Eduardo de C
authors.initials: JE
authors.lastname: Silva
authors.forename: Hani C
authors.initials: HC
authors.lastname: Yehia
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use; D000465:Algorithms; D005260:Female; D005583:Fourier Analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D009146:Music; D011433:Propranolol / Q000627:therapeutic use; D012815:Signal Processing, Computer-Assisted; D013018:Sound Spectrography; D013061:Speech Acoustics; D013068:Speech Production Measurement; D013997:Time Factors; D016896:Treatment Outcome; D014732:Vibration; D014832:Voice Disorders / Q000175:diagnosis* / Q000188:drug therapy / Q000503:physiopathology; D014833:Voice Quality / Q000187:drug effects
chemical_list: D000319:Adrenergic beta-Antagonists; D011433:Propranolol