[The use of visual feedback in the treatment of a deaf young man with puberphonia]. / Primenenie vizual'noi obratnoi svyazi pri lechenii glukhogo yunoshi s puberfoniei.

A case of successful correction of the pitch frequency using the computer program Circ FFT is described.

[Evaluation of the results of treatment of patients with functional dysphonia using a cepstral test]. / Otsenka rezul'tatov lecheniya patsientov s funktsional'noi disfoniei s pomoshch'yu kepstral'nogo testa.

In order to evaluate the effectiveness of the treatment in patients with functional dysphonia, the Cepstral Peak Prominence (CPP) test was used. Twenty dysphonic women aged from 18 to 47 years were under observation. The control group consisted of 20 healthy women of close age. Patients underwent 5-7 sessions electrostimulation of laryngeal muscles and phonopedic treatment, after which a complete restoration of the voice was noted. The Praat clinical program was used, installed on a Hewlett-Packard 630 laptop (Pentium B960, 2.2 GHz). A SHURE SM94 condenser microphone was used as well. In the control group, the results were as follows: M=7.49 (SD=1.26) dB. In the main group before treatment: M=5.00 (SD=1.07) dB, after treatment: M=7.95 (SD=1.34) dB. Differences in KT values in the main group before and after treatment (5.00 dB and 7.95 dB, respectively) were significant at p<0.0001. Differences in KT values in the main group before treatment (5.00 dB) and in the control group (7.49 dB) were significant at p<0.0001. Differences in KT values in the main group after treatment (7.95 dB) and in the control group (7.49 dB) were not significant at p>0.05. The study showed high sensitivity of the method. The CPP data after treatment were higher than those before treatment and did not differ from the control ones. It is concluded that CPP is a highly sensitive method for evaluating the degree of periodicity of an acoustic signal and can be used to evaluate the effectiveness of treatment in patients with functional dysphonia.

A study of menses-related changes to the larynx in singers with voice abuse.

Fifteen vocally abusive and 15 healthy female classical singers were examined before and outside menses by means of laryngoscopy, laryngostroboscopy and electroglottography. Investigation before menses revealed more extensive alteration of the larynx in vocally abusive singers than in healthy ones. Subsequent investigation, after the inappropriate use of their voice had been eliminated, indicated decreased changes to the larynx. It was concluded that premenstrual hyperchanges were a result of combined abuse- and menses-related influence on the larynx, and that laryngeal examination before menstruation could be a useful test for the presence of physiologically correct singing.

Determination of laryngeal muscle tension in professional singers.

In order to study internal laryngeal muscular tension, 60 opera singers were examined. We determined the EGG quasi-open quotient (QOQ) by means of a crescendo singing task. The region between low (QOQ in 'piano') and high vocal intensity (QOQ in 'forte') is called volume of the QOQ. It was revealed that the volume of the QOQ is a reliable indication of the laryngeal muscular tension of the singers. This method reveals the early stages of muscular tension disturbances before objective changes in the larynx are present.