{"action":"created","issue":{"url":"https://api.github.com/repos/VCVRack/Rack/issues/910","repository_url":"https://api.github.com/repos/VCVRack/Rack","labels_url":"https://api.github.com/repos/VCVRack/Rack/issues/910/labels{/name}","comments_url":"https://api.github.com/repos/VCVRack/Rack/issues/910/comments","events_url":"https://api.github.com/repos/VCVRack/Rack/issues/910/events","html_url":"https://github.com/VCVRack/Rack/issues/910","id":313346770,"node_id":"MDU6SXNzdWUzMTMzNDY3NzA=","number":910,"title":"0.6.0 / Fundamental / Mixer module / suggestion","user":{"login":"vogelscheiss","id":38222883,"node_id":"MDQ6VXNlcjM4MjIyODgz","avatar_url":"https://avatars1.githubusercontent.com/u/38222883?v=4","gravatar_id":"","url":"https://api.github.com/users/vogelscheiss","html_url":"https://github.com/vogelscheiss","followers_url":"https://api.github.com/users/vogelscheiss/followers","following_url":"https://api.github.com/users/vogelscheiss/following{/other_user}","gists_url":"https://api.github.com/users/vogelscheiss/gists{/gist_id}","starred_url":"https://api.github.com/users/vogelscheiss/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/vogelscheiss/subscriptions","organizations_url":"https://api.github.com/users/vogelscheiss/orgs","repos_url":"https://api.github.com/users/vogelscheiss/repos","events_url":"https://api.github.com/users/vogelscheiss/events{/privacy}","received_events_url":"https://api.github.com/users/vogelscheiss/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":1,"created_at":"2018-04-11T14:22:51Z","updated_at":"2018-06-28T14:10:28Z","closed_at":"2018-04-11T15:06:23Z","author_association":"NONE","body":"Under 0.6.0 the Fundamental Mixer module has been changed to quadratic scaling. Perhaps there's a rationale I don't understand.\r\n\r\nAs you know, pots come in two basic flavors - linear and logarithmic (exponential). Due to their different behaviors In a modular synth you use \r\n\r\n- linear for CVs and \r\n- logarithmic for audio.\r\n\r\nThe Fundamental VCA for instance has a lin and an exp CV input.\r\n\r\nQuadratic doesn't come into it. Could I suggest instead of quadratic scaling on the mixer, instead a lin/log toggle switch on the mixer to suit the module to either purpose?\r\n\r\nJust a suggestion. Thanks."},"comment":{"url":"https://api.github.com/repos/VCVRack/Rack/issues/comments/401048285","html_url":"https://github.com/VCVRack/Rack/issues/910#issuecomment-401048285","issue_url":"https://api.github.com/repos/VCVRack/Rack/issues/910","id":401048285,"node_id":"MDEyOklzc3VlQ29tbWVudDQwMTA0ODI4NQ==","user":{"login":"AndrewBelt","id":338179,"node_id":"MDQ6VXNlcjMzODE3OQ==","avatar_url":"https://avatars1.githubusercontent.com/u/338179?v=4","gravatar_id":"","url":"https://api.github.com/users/AndrewBelt","html_url":"https://github.com/AndrewBelt","followers_url":"https://api.github.com/users/AndrewBelt/followers","following_url":"https://api.github.com/users/AndrewBelt/following{/other_user}","gists_url":"https://api.github.com/users/AndrewBelt/gists{/gist_id}","starred_url":"https://api.github.com/users/AndrewBelt/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/AndrewBelt/subscriptions","organizations_url":"https://api.github.com/users/AndrewBelt/orgs","repos_url":"https://api.github.com/users/AndrewBelt/repos","events_url":"https://api.github.com/users/AndrewBelt/events{/privacy}","received_events_url":"https://api.github.com/users/AndrewBelt/received_events","type":"User","site_admin":false},"created_at":"2018-06-28T14:10:28Z","updated_at":"2018-06-28T14:10:28Z","author_association":"MEMBER","body":"Thinking back on this, here's a more rigorous explanation that I prefer polynomial/roots over logarithmic/exponential parameters. Suppose you need a parameter ranging from -N*10 dB to 0dB. Take the inverse, expand the series, take the Nth monomial, and take the inverse again to get the approximation x^{1/N}. There is little difference as you can see:\r\n\r\n![2018-06-28-095926_1599x799_scrot](https://user-images.githubusercontent.com/338179/42038922-207cfcf6-7aba-11e8-8753-dad98810ec21.png)\r\n\r\nWith the root formula, you get the added benefit that the parameter tapers to -inf dB at its 0 position, which is desired because users typically want to mute a signal when a knob is hard-left, not attenuate at -40dB.\r\n\r\nAlso, integer powers and roots are way faster than `log10()` or `powf(10.f, x)`. See https://godbolt.org/g/v28jAP"}}
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