AUSSONDERUNGSGERAET FUER STIMMPARAMETER.

摘要

A pneumotachographic device which produces an output voiced speech waveform which is appropriately filtered to remove the formant frequencies and to produce a smoothed glottal waveform. From the pneumotachograph output waveform and smoothed glottal waveform are derived a peak value P, a minimum value L, glottal wave period T and average value M for the glottal waveform. The amplitude and wave centre value are calculated, and from these the open quotient Q is derived, which represents the ratio of the duration of the open portion B of the glottal wave cycle to the entire period T thereof.