title: An improved technique for measurement of the relative noise level using a sound spectrograph.
authors.forename: M
authors.initials: M
authors.lastname: Fujiu
authors.forename: S R
authors.initials: SR
authors.lastname: Hibi
authors.forename: M
authors.initials: M
authors.lastname: Hirano
mesh_terms: D000328:Adult; D005260:Female; D005374:Filtration; D006801:Humans; D008297:Male; D009622:Noise; D013018:Sound Spectrography / Q000379:methods*; D014831:Voice