A three mass model of vocal cords as well as mathematical expression of the model are discussed. Different kinds of typical hoarse speech due to laryngeal diseases are simulated on microcomputer and the effects of di...A three mass model of vocal cords as well as mathematical expression of the model are discussed. Different kinds of typical hoarse speech due to laryngeal diseases are simulated on microcomputer and the effects of different pathological factors of vocal cords on model parameters are studied. Some typical spectrum distribution of the simulated speech signals are given. Moreover, hoarse speech signals of some typical cases are analyzed by the methods of digital signal processing, including FFT, LPC, Cepstrum technique, Pseudocolor encoding, etc. The experiment results show that the three mass model analysis of vocal cords is an efficient method for analysis of hoarse speech signals.展开更多
Hoarseness is a common clinical symptom. Since 1996 we have treated 92 cases of hoarseness by needling Zhaohai (KI 6) point and achieved good therapeutic effects. This is reported as follows.
Objective To investigate the clinical effects of cordotomy on bilateral cord abductal paralysis. Methods With unilateral cordotomy, we treated 4 patients with bilateral cord paralysis whose glottis size was about 2.0 ...Objective To investigate the clinical effects of cordotomy on bilateral cord abductal paralysis. Methods With unilateral cordotomy, we treated 4 patients with bilateral cord paralysis whose glottis size was about 2.0 mm to 2.5 mm. They were followed up for over one year.Results One week after surgery, the tracheotomy tubes of all 4 patients were plugged and no dyspnea occurred during rest and mild action. Their voices were more hoarse than before surgery. After 3 months,the tracheotomy tubes were successfully decannulated, and in the following one year, their respiration was normal and then speech was clear, although their voices were still a little hoarse.Conclusion We suggest that cordotomy be one option in the treatment of bilateral cord abductal paralysis.展开更多
文摘A three mass model of vocal cords as well as mathematical expression of the model are discussed. Different kinds of typical hoarse speech due to laryngeal diseases are simulated on microcomputer and the effects of different pathological factors of vocal cords on model parameters are studied. Some typical spectrum distribution of the simulated speech signals are given. Moreover, hoarse speech signals of some typical cases are analyzed by the methods of digital signal processing, including FFT, LPC, Cepstrum technique, Pseudocolor encoding, etc. The experiment results show that the three mass model analysis of vocal cords is an efficient method for analysis of hoarse speech signals.
文摘Hoarseness is a common clinical symptom. Since 1996 we have treated 92 cases of hoarseness by needling Zhaohai (KI 6) point and achieved good therapeutic effects. This is reported as follows.
文摘Objective To investigate the clinical effects of cordotomy on bilateral cord abductal paralysis. Methods With unilateral cordotomy, we treated 4 patients with bilateral cord paralysis whose glottis size was about 2.0 mm to 2.5 mm. They were followed up for over one year.Results One week after surgery, the tracheotomy tubes of all 4 patients were plugged and no dyspnea occurred during rest and mild action. Their voices were more hoarse than before surgery. After 3 months,the tracheotomy tubes were successfully decannulated, and in the following one year, their respiration was normal and then speech was clear, although their voices were still a little hoarse.Conclusion We suggest that cordotomy be one option in the treatment of bilateral cord abductal paralysis.
