{"id":7125,"date":"2024-12-11T10:52:41","date_gmt":"2024-12-11T15:52:41","guid":{"rendered":"https:\/\/pugix.com\/synth\/?p=7125"},"modified":"2024-12-11T10:52:42","modified_gmt":"2024-12-11T15:52:42","slug":"feedback-inspired-by-audrey-ii","status":"publish","type":"post","link":"https:\/\/pugix.com\/synth\/feedback-inspired-by-audrey-ii\/","title":{"rendered":"Feedback Inspired by Audrey II"},"content":{"rendered":"\n
\"\"
Audrey II Feedback Design – Synthux Academy<\/figcaption><\/figure>\n\n\n\n

I will soon be posting about Audrey II from Synthux Academy<\/a>. The diagram above is a screenshot from a video explaining the design of Audrey II. It shows a feedback loop that starts with a low noise signal exciting a resonator (comb filter) that produces a Karplus-Strong effect. This is passed successively through distortion, reverb, high pass and low pass filters before being sent through a delay and mixed with the original noise back into the resonator. The output is tapped at the filters, passed through another delay to produce a stereo output<\/p>\n\n\n\n

I experimented with stereo patches using this feedback concept, using eurorack modules.<\/p>\n\n\n\n

\"\"
One of the feedback patches<\/figcaption><\/figure>\n\n\n\n

I tried two different noise sources, one from a eurorack random module, the other from my Quantum Ocean (pictured above to the lower right). The noise was patched into either of the Veno-Echo<\/a> stereo delay or the Make Noise Mimeophon<\/a>. Veno-Echo was clocked into the Karplus-Strong region and Mimeophon was set to the fastest zone where it can also generate Karplus-Strong.<\/p>\n\n\n\n

Output from the Karplus-Strong generator was passed through Instruo Tanh[3]<\/a> for distortion and limiting, then to the White Rabbit<\/a> reverb and then through one of the filters available in Vult Freak. The filter output then goes through Nonlinear Memory Machine<\/a> for delay and mixed back with the noise to complete the feedback input to the K-P generator. I put the Tanh function just after the Quantum Ocean for amplification in some patches.<\/p>\n\n\n\n

The filter outputs were also taken to the ThreeTom Doppio<\/a>, then to the Worng Midside+<\/a>, with the side signals processed through a channel of NANO modules CEQ<\/a> before going to the main output.<\/p>\n\n\n\n

Four Takes<\/h3>\n\n\n\n
Feedback take 1<\/figcaption><\/figure>\n\n\n\n
Feedback take 2<\/figcaption><\/figure>\n\n\n\n
Feedback take 3<\/figcaption><\/figure>\n\n\n\n
Feedback take 4<\/figcaption><\/figure>\n\n\n\n

Improvisation with Mocante\/Aurora together with the feedback patch<\/h3>\n\n\n\n
\"\"
Patch used for improvisation<\/figcaption><\/figure>\n\n\n\n