Hello, Isabel Schiller . I have been developing a physics-based synthesizer of dysphonic voices. In this link you will find more information and a prototype for download: https://cic.unb.br/~lucero/synthesis_en.html . The synthesizer is able to produce sustained vowels with controlled levels of breathiness, jitter, tremor, and other effects, and I am currently working on consonant-vowel sequences.

Good question. Following.

I don't know of any, but if memory serves, Ray Kent used to work on things related to this, so he may know of something or may have done some work on it....it's been a long time since I've followed his work.

Try to use this one:

http://sdelaicomp.ru/programmy/sintezator-rechi-onlajn.html

Has usado el PRAAT? este es un software gratuito justamente diseñado para el análisis científico del habla. Podrias probarlo.

No. I didn't try. Please send the link.

Downloading praat for windows

Thank you very much Ronnie Silber, I will contact Ray Kent about this. Raheem Ali Al-foadi, thank you for the link. Unfortunately, I did not find any possibility to switch the language to English. Also thanks to you Yolanda Cardenas Camayo - I use Praat very regularly but don't know if and how it can be used to synthesize impaired voice on running speech. Have you used Praat in this context?

Hello, Isabel Schiller . I have been developing a physics-based synthesizer of dysphonic voices. In this link you will find more information and a prototype for download: https://cic.unb.br/~lucero/synthesis_en.html . The synthesizer is able to produce sustained vowels with controlled levels of breathiness, jitter, tremor, and other effects, and I am currently working on consonant-vowel sequences.

Hi,

You may use https://slidetalk.net/ , this is a free web tool.