Spectrum factors relevant to phonetogram measurement

摘要: Phonetograms showing the sound‐pressure level (SPL) in loudest and softest possible phonation are frequently used some voice clinics as an aid for describing status of function. Spectrum analysis vowel /a/ produced by ten females males with healthy, untrained voices revealed that fundamental was mostly strongest spectrum partial soft while loud generally overtone. Also, first‐formant frequency lower than phonation. Measuring SPL dB(A) rather dB lowered phonetogram contour phonation, effect increasing decreasing frequency. measurements on a group 22 healthy showed gave higher values other vowels The using great but similar all while, small, particularly /a/. In dB, e...