License issue? about sndfilter HOT 4 OPEN

I don't believe it falls under GPL, because it is a rewrite from scratch. I.e., no copy/pasted code, and if you actually look at Freeverb vs sndfilter code, you can tell it is completely different. The algorithm is the same (or, should be), but the implementation is completely different.

This is no different than Linux being a rewrite of Unix, imo.

Of course, I'm not a lawyer. But I can tell you that I spent a lot of effort reading the Freeverb codebase, figuring out the algorithm behind it, and reimplementing it. Like I said, just compare the source files, it's very obvious.

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Maybe is there a way to isolate the GPL license to this file only. I just discovered this project yesterday and it's awesome, hope to integrate it in my projects some day, don't want it to be GPL'd.

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Thanks for the reply.
It seems to me that this may fall into a grey area 🤔 , since gpl covers derivate work, and this may be seen as a derivate work, or at least that's how the last part in the readme may be interpreted, but I'm not a lawyer either.

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generally it's not possible to license an algorithm

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