See also, e.g., Virtual ANS <a href="http://www.warmplace.ru/soft/ans/" rel="nofollow">http://www.warmplace.ru/soft/ans/</a> based on the real ANS synth <a href="https://en.wikipedia.org/wiki/ANS_synthesizer" rel="nofollow">https://en.wikipedia.org/wiki/ANS_synthesizer</a>